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  • 1. Aboh, I. J. Kwame
    et al.
    Henriksson, Dag
    University of Borås, School of Engineering.
    Laursen, Jens
    Lundin, Magnus
    University of Borås, School of Engineering.
    Gormon Ofosu, Francis
    Pind, Niels
    Selin Lindgren, Eva
    University of Borås, School of Engineering.
    Wahnström, Tomas
    University of Borås, School of Engineering.
    Identification of Aerosol Particle Sources in Semi-rural of Kwabenya, near Accra, Ghana2008Conference paper (Other academic)
  • 2. Aboh, I. J. Kwame
    et al.
    Henriksson, Dag
    University of Borås, School of Engineering.
    Laursen, Jens
    Selin Lindgren, Eva
    Lundin, Magnus
    University of Borås, School of Engineering.
    Pind, Niels
    Wahnström, Tomas
    University of Borås, School of Engineering.
    Air Pollution and Meteorology: Ambient PM2.5 Aerosol Origin Studied by Factor Analysis of Elemental Composition Related to Wind Data2008Conference paper (Other academic)
  • 3. Andersson, F.
    et al.
    Wittsten, Jens
    Ramirez, A. C.
    Wiik, T.
    Deblending seismic data by directionality penalties2016Conference paper (Refereed)
    Abstract [en]

    In conventional seismic surveys, there is a waiting time between sequentially fired shots. This time is determined such that the deepest reflection of interest is recorded before the following source is fired. In a survey with simultaneous or blended sources, the waiting time between the firing of shots is not dependent on the deepest reflection of interest, it is usually much shorter and/or can have random time delays. Thus, the wavefields due to independent sources are overlapped in the records.

    The blended data exhibit strong discontinuities in the source direction, in contrast to the coherency expected from seismic measurements. A strategy for deblending could then be to suppress these discontinuities. In this paper, we propose to do this by designing an energy functional that uses a combination of individual functionals that penalize deviations from local plane waves in the reconstructed (deblended) data, as well as a least squares term that penalizes discrepancies between the deblended and the measured data. In this way, we derive a set of coupled nonlinear partial differential equations that we use for the deblending procedure.

  • 4.
    Andersson, Fredrik
    et al.
    Institute of Geophysics, ETH-Zurich.
    Robertsson, Johan
    Institute of Geophysics, ETH-Zurich.
    Van Manen, Dirk-Jan
    Institute of Geophysics, ETH-Zurich.
    Wittsten, Jens
    Lunds universitet.
    Eggenberger, Kurt
    Amundsen, Lasse
    Flawless diamond reconstruction for simultaneous source separation2017Conference paper (Refereed)
    Abstract [en]

    In this paper we prove that the recently introduced method of signal apparition optimally separates signals from interfering sources recorded during simultaneous source seismic data acquisition. By utilizing a periodic sequence of source signatures along one source line, that wavefield becomes separately partially visible in the spectral domain where it can be isolated from interfering signals, processed, and subtracted from the original recordings, thereby separating the wavefields from each other. Whereas other methods for simultaneous source separation can recover data in triangle-shaped region in the spectral domain, signal apparition allows for the exact separation of data in a diamond-shaped region that is twice as large thereby enabling superior reconstruction of separated wavefields throughout the entire data bandwidth.

  • 5.
    Andersson, Fredrik
    et al.
    Lunds universitet.
    Robertsson, Johan
    Institute of Geophysics, ETH-Zurich..
    van Manen, Dirk-Jan
    Institute of Geophysics, ETH-Zurich..
    Wittsten, Jens
    Lunds universitet.
    Eggenberger, Kurt
    Seismic Apparition GmbH, Zurich.
    Amundsen, Lasse
    Norwegian University of Science and Technology.
    Flawless diamond separation in simultaneous source acquisition byseismic apparition2017In: Geophysical Journal International, ISSN 0956-540X, E-ISSN 1365-246X, Vol. 209, no 3, p. 1793-1739Article in journal (Refereed)
    Abstract [en]

    In this paper we prove that the recently introduced method of signal apparition optimally separates signals from interfering sources recorded during simultaneous source seismic data acquisition. By utilizing a periodic sequence of source signatures along one source line, that wavefield becomes separately partially visible in the spectral domain where it can be isolated from interfering signals, processed, and subtracted from the original recordings, thereby separating the wavefields from each other. Whereas other methods for simultaneous source separation can recover data in a triangle-shaped region in the spectral domain, signal apparition allows for the exact separation of data in a diamond-shaped region that is twice as large thereby enabling superior reconstruction of separated wavefields throughout the entire data bandwidth.

  • 6.
    Andersson, Fredrik
    et al.
    Institute of Geophysics, ETH-Zurich.
    Van Manen, Dirk-Jan
    Institute of Geophysics, ETH-Zurich.
    Robertsson, Johan
    Institute of Geophysics, ETH-Zurich.
    Wittsten, Jens
    Eggenberger, Kurt
    Analytic dealiasing in seismic apparition2017Conference paper (Refereed)
    Abstract [en]

    Signal apparition offers a fundamentally new perspective on simultaneous source separation. Whereas the method exactly separates the signal from interfering sources in diamond-shaped regions of the f-k space, signal from simultaneous source still overlap outside these regions. We present a method based on using local phase functions and the analytic part of the blended data to reconstruct the separated data throughout the full data bandwidth.

  • 7.
    Andersson, Fredrik
    et al.
    Lund University and Seismic Apparition GmbH.
    Van Manen, Dirk-Jan
    ETH and Seismic Apparition GmbH.
    Wittsten, Jens
    Lund University.
    Eggenberger, Kurt
    Seismic Apparition GmbH.
    Robertsson, Johan O. A.
    ETH and Seismic Apparition GmbH.
    Quaternion dealising for simultaneous source separation2017In: SEG Technical Program Expanded Abstracts 2017, Society of Exploration Geophysicists , 2017Conference paper (Refereed)
    Abstract [en]

    Signal apparition offers a fundamentally new perspective on simultaneous source separation. Whereas the method exactly separates the signal from interfering sources in diamond-shaped regions of the frequency-wavenumber domain, signals from simultaneous sources still overlap outside these regions. We present a method based on using quaternion representations of the blended data that reconstruct the separated data throughout the full data bandwidth by iteratively using reconstructions for lower frequencies to recover the higher frequency content. Presentation Date: Tuesday, September 26, 2017 Start Time: 9:20 AM Location: Exhibit Hall C, E-P Station 2 Presentation Type: EPOSTER

  • 8.
    Awasthi, S K
    et al.
    College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi Province, PR China.
    Kumar, M
    CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India.
    Sarsaiya, S
    Key Laboratory of Basic Pharmacology and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China.
    Ahluwalia, V
    Institute of Pesticide Formulation Technology, Gurugram, Haryana, 122 016, India.
    Chen, H Y
    Institute of Biology, Freie Universität Berlin, Altensteinstr. 6, Berlin, 14195, Germany.
    Kaur, G
    Department of Civil Engineering, Lassonde School of Engineering, York University, Toronto, ON, M3J 1P3, Canada.
    Sirohi, R
    Department of Chemical and Biological Engineering, Korea University, Seoul, South Korea.
    Sindhu, R
    Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, 695019, India.
    Binod, P
    Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, Kerala, 695019, India.
    Pandey, A
    Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow, 226 001, India.
    Rathour, R
    CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India.
    Kumar, S
    CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India.
    Singh, L
    CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur, 440020, Maharashtra, India.
    Zhang, Z Q
    College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi Province, PR China.
    Taherzadeh, Mohammad J
    University of Borås, Faculty of Textiles, Engineering and Business.
    Awasthi, M K
    College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, Shaanxi Province, PR China.
    Multi-criteria research lines on livestock manure biorefinery development towards a circular economy: From the perspective of a life cycle assessment and business models strategies2022In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 341, article id 130862Article in journal (Refereed)
    Abstract [en]

    Livestock manure (LSM) is a profitable waste if handled sensibly, but simultaneously it imposes several environmental and health impacts if managed improperly. Several approaches have been adopted globally to cartel the problem associated with LSM management and recovery of value-added products, still, technological innovation needs further upgradation in consideration with the environment, energy, and economy. This review delivered a vibrant portrait of manure management, which includes, bioenergy generation and resource recovery strategies, their current scenario, opportunities, challenges, and prospects for future researches along with global regulations and policies. Several bioenergy generation and nutrient recoveries technologies have been discussed in details, still, the major glitches allied with these technologies are its high establishment costs, operational costs, manure assortment, and digestate handling. This review also discussed the techno-economic assessment (TEA) and life cycle assessment (LCA) of LSM management operation in the context of their economical and environmental sustainability. Still, extensive researches needed to build an efficient manure management framework to advance the integrated bioenergy production, nutrients recycling, and digestate utilization with least environmental impacts and maximal economical gain, which has critically discussed in the current review.

  • 9.
    Beach, Elisabeth
    University of Borås, Faculty of Textiles, Engineering and Business.
    Plaster för framtidens cirkulära ekonomi2021Independent thesis Basic level (degree of Bachelor), 180 HE creditsStudent thesis
    Abstract [en]

    In 2020, the Swedish Parliament passed a motion to move the national economic base from a linear toward a circular economy, but the transition may be moving too slowly. The European Commission (2015) describes a circular economy as ”… where the value of products, materials and resources is maintained in the economy for as long as possible, and the generation of waste minimized, as an essential contribution to the EU's efforts to develop a sustainable, low carbon, resource efficient and competitive economy”. This thesis aims to study future plastics from a circular economy perspective.

    The thesis has applied Rhetorical Structure Theory (RST) to produce systematic literature analysis with the intention of identifying and critically evaluating research to answer a specific research question. The review proceeded through a plan that included both qualitative and quantitative corpus research to find, mark and count instances of the use of concepts and identify conjunctions between them, that is so called coherence conjunctions. A qualitative comparative content analysis between corpora has been used involving independent scientific articles and reports from commissioned investigations appointed by the Swedish government.

    Based on the problem description, the purpose of this thesis is to develop knowledge about the possibilities and place of plastics in a future circular economy using previous research. Through a study of existing research, the main questions for the thesis are the following:

    - Plastics of the future?

    - A biodegradable plastic, does it play a role in the society?

    - What are the prospect for biobased plastics and biodegradable plastics?

    - What might our future society look like?

    We left the old donate and repair society for a buy and sell society and there are economic theories of to what was the driving incitements to that. One of which was accessibility of cheap labour, new construction technology for factories and warehouses and a new transport network that enabled factories to produce and transport goods within effectively and increase the surplus value of production (i.e. profit). Now today when global environmental challenges threaten the sustainability and profitability of this form of consumption economy efforts have emerged to uncover new production forms. A circular economy with elements of the old donate and repair society is one of them. It demands redesigning production to increase service life for plastic products. The future of plastic is at a crossroads that requires a combination of new policy instruments and changes in behaviour and research.

    The result is based on an analysis of the study’s literature corpus regarding information on plastics role in a circular- and bioeconomy society where its function is put in relation to its environmental benefits and its ability for a spot in a recycling society.

    Together with an increase in crude oil and policy instruments in the form of tax reductions and subsidies for commercial activities who want to become more sustainable it enables a future circular economy. The aim of this thesis has been fulfilled, but the complexity of the subject has led to unanswered research questions due to factors that lie somewhat outside the scope of the study.

    Download full text (pdf)
    PLASTER FÖR FRAMTIDENS CIRKULÄRA EKONOMI
  • 10.
    Carney Almroth, Bethanie M.
    et al.
    University of Gothenburg.
    Åström, Linn
    University of Gothenburg.
    Roslund, Sofia
    Petersson, Hanna
    Johansson, Mats
    University of Borås, Faculty of Textiles, Engineering and Business.
    Persson, Nils-Krister
    University of Borås, Faculty of Textiles, Engineering and Business.
    Quantifying shedding of synthetic fibers from textiles; a source ofmicroplastics released into the environment2017In: Environmental Science and Pollution Research, ISSN 0944-1344, E-ISSN 1614-7499, article id 10.1007/s11356-017-0528-7Article in journal (Refereed)
    Abstract [en]

    Microplastics in the environment are a subject of intense research as they pose a potential threat to marine organisms. Plastic fibers from textiles have been indicated as a major source of this type of contaminant, entering the oceans via wastewater and diverse non-point sources. Their presence is also documented in terrestrial samples. In this study, the amount of microfibers shedding from synthetic textiles was measured for three materials (acrylic, nylon, polyester), knit using different gauges and techniques. All textiles were found to shed, but polyester fleece fabrics shed the greatest amounts, averaging 7360 fibers/m−2/L−1 in one wash, compared with polyester fabrics which shed 87 fibers/m−2/L−1. We found that loose textile constructions shed more, as did worn fabrics, and high twist yarns are to be preferred for shed reduction. Since fiber from clothing is a potentially important source of microplastics, we suggest that smarter textile construction, prewashing and vacuum exhaustion at production sites, and use of more efficient filters in household washing machines could help mitigate this problem.

  • 11.
    Dessne, Petter
    University of Borås, School of Business and IT.
    Grönt energisamarbete kan rädda tusentals från svältdöden2011In: NewsmillArticle in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    I Durban diskuteras i dagarna inte bara koldioxidutsläpp utan också hur man bäst tar tillvara den enda procent av världens vatten som är tjänligt dricksvatten. Att värna om befintligt sötvatten är viktigt, men det finns också ett annat sätt: extrahera dricksvatten från havet med den gröna tekniken OTEC. Bara några mil från ökenområdena ligger Afrikas kust och OTEC kan ge både elektricitet och tusentals kubikmeter sötvatten varje dygn. Projektet OTEC Africa (www.otecafrica.org) syftar till att åstadkomma just detta.

    Download full text (pdf)
    fulltext
  • 12.
    Dessne, Petter
    et al.
    University of Borås, School of Business and IT.
    Dessne, Karin
    University of Borås, Swedish School of Library and Information Science.
    Miljöstrategiska val för ett stärkt Borås2012In: Borås Tidning, ISSN 1103-9132Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Vindkraften, stadstrafiken och järnvägen utgör tre problem eller tre möjligheter för Borås framtid. Vi föreslår några strategiska val för att stärka vår hemregion.

    Download full text (pdf)
    fulltext
  • 13.
    Dessne, Petter
    et al.
    University of Borås, School of Business and IT.
    Fachina, Vicente
    University of Borås, School of Business and IT.
    Golmen, Lars G.
    University of Borås, School of Business and IT.
    Miller, Alan K.
    University of Borås, School of Business and IT.
    Panchal, C. B.
    University of Borås, School of Business and IT.
    Hammar, Linus
    University of Borås, School of Business and IT.
    Jamaluei, Zahra Yadali
    University of Borås, School of Business and IT.
    Duckers, Les
    University of Borås, School of Business and IT.
    Blanchard, Richard
    University of Borås, School of Business and IT.
    Banerjee, Subhashish
    University of Borås, School of Business and IT.
    Baird, Jim
    University of Borås, School of Business and IT.
    Johnson, Ted
    University of Borås, School of Business and IT.
    Bharathan, Desikan
    University of Borås, School of Business and IT.
    Lever, Harold
    University of Borås, School of Business and IT.
    Yu, Jason C. S.
    University of Borås, School of Business and IT.
    Chen, W.
    University of Borås, School of Business and IT.
    OTEC matters 20152015Report (Other academic)
    Abstract [en]

    For mankind as a whole, and in many respects, the world is becoming a better place each year. In both rich and poor countries the standard of living has improved steadily for a very long time. This progress has a serious drawback, the negative effects on Earth’s climate. It is clear that the only way we can live sustainably is by consuming much less. However, this is not enough: there is an undeniable need for new energy sources. As the world’s population grows, many countries will also face more severe shortages of food and of fresh, disease-free water. Most developing countries are situated in tropical regions and are therefore hit hard by increasing tropical storms and similar weather-based disasters, adding to these problems. Ocean Thermal Energy Conversion (OTEC) technology has been proven to be an ideal candidate for addressing and resolving all of these problems for small island developing states (SIDS), and a few months ago, the EU set aside€72 million euros for constructing OTEC plants outside Martinique. Built on a much larger scale, OTEC can, as the only technology known to man, supply the world with its total energy and fresh water needs, increase seafood production many times over, and cooling off parts of the sea surface when they become too hot – all this without any atmospheric emissions. Thus, it is with great excitement that this very first issue of the only journal dedicated to OTEC is being published. The publication covers many facets of OTEC and related matters, such as OTEC technology, sustainability including gender and other social studies, renewable energy, marine biology, metallurgy, and research on developing countries. The publication is aimed at two different audiences, scientists directly or indirectly involved with OTEC technology, and a more diverse group of people consisting of scientists from non-technical fields, industry people, politicians, investors, educators, and more. This volume is published as part of the publication series of the University of Borås, a progressive Swedish university with a high interest in and knowledge about sustainability.

    Download full text (pdf)
    FULLTEXT01
  • 14.
    Dessne, Petter
    et al.
    University of Borås, School of Business and IT.
    Golmen, Lars
    Johnson, Ted
    Bharathan, Desikan
    Lever, Harold
    Ny havsteknik kan lösa miljöproblem2014In: Svenska Dagbladet, ISSN 1101-2412, no 2014-02-08Article in journal (Other (popular science, discussion, etc.))
    Abstract [sv]

    Debattartikel som förespråkar miljötekniken OTEC för att förse stora delar av världen med energi och färskvatten.

  • 15. Ding, Zheli
    et al.
    Ge, Yu
    Gowd, Sarath C.
    Singh, Ekta
    Kumar, Vinay
    Chaurasia, Deepshi
    Kumar, Vikas
    Rajendran, Karthik
    Bhargava, Preeti Chaturvedi
    Wu, Peicong
    Lin, Fei
    Harirchi, Sharareh
    Ashok kumar, Veeramuthu
    Sirohi, Ranjna
    Sindhu, Raveendran
    Binod, Parameswaran
    Taherzadeh, Mohammad J
    University of Borås, Faculty of Textiles, Engineering and Business.
    Awasthi, Mukesh Kumar
    Production of biochar from tropical fruit tree residues and ecofriendly applications – A review2023In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 376, article id 128903Article, review/survey (Refereed)
    Abstract [en]

    Environmental contamination is considered a major issue with the growing urbanization and industrialization. In this context, the scientific society is engaged in searching for a sustainable, safe, and eco-friendly solution. Sustainable materials such as biochar play an important role in environmental contamination. It has some specific properties such as micropores which increase the surface area to bind the pollutants. This review endeavors to analyze the potential of fruit wastes especially tropical fruit tree residues as potential candidates for producing highly efficient biochar materials. The review discusses various aspects of biochar production viz. pyrolysis, torrefaction, hydrothermal carbonization, and gasification. In addition, it discusses biochar use as an adsorbent, wastewater treatment, catalyst, energy storage, carbon sequestration and animal feed. The review put forward a critical discussion about key aspects of applying biochar to the environment.

  • 16. Drotz, Marcus
    et al.
    Kyrkander, Tina
    Lundberg, Stefan
    Svensson, Jan-Erik
    University of Borås, School of Education and Behavioural Science.
    Främmande arter invaderar våra sötvatten2014Report (Other academic)
    Abstract [sv]

    På senare år har allt fler främmande, invasiva arter börjat breda ut sig i våra sötvatten. En främmande art är en organism som har spridits utanför sitt naturliga utbredningsområde med människans hjälp. Detta kan ha skett avsiktligt eller av misstag. En del av dessa nya arter ställer till problem, andra gör det inte. Här beskrivs övervakningen av några invasiva arter samt hur man kan arbeta för att begränsa dem. Ullhandskrabba, vandrarmussla och sjögull kommer av allt att döma att öka sin utbredning i Sverige de närmaste åren. Det finns idag ett stort antal främmande arter rapporterade från svenska sötvatten och i vår närhet finns ett femtiotal nya arter som kan tänkas etablera sig här. Alla dessa arter kommer inte nödvändigtvis att skapa problem men kunskap om deras biologi och observationer från allmänheten kommer att betyda mycket även i det framtida övervakningsarbetet.

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    FULLTEXT01
  • 17.
    Duan, Y M
    et al.
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
    Yang, J F
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
    Guo, Y R
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
    Wu, X P
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
    Tian, Y L
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
    Li, H K
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
    Mukesh Kumar, Awasthi
    University of Borås, Faculty of Textiles, Engineering and Business. College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China.
    Pollution control in biochar-driven clean composting: Emphasize on heavy metal passivation and gaseous emissions mitigation2021In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 420, article id 126635Article in journal (Refereed)
    Abstract [en]

    Present study was focus on the pollution control aspect of gaseous mitigation and heavy metal passivation as well as their associated bacterial communities driven by apple tree branch biochar (BB) during sheep manure composting. Six treatment was performed with distinct concentration of BB from 0%, 2.5%, 5%, 7.5%, 10%, and 12.5% as T1 to T6. Compared with compost without additive, biochar-based composting recorded faster thermophilic process (4thd) and longer duration (12-14d), lower gaseous emission in terms of ammonia (5.37-10.29 g), nitrous oxide (0.12-0.47 g) and methane (4.38-30.29 g). Notably highest temperature (65.3 celcius) and active thermophilic duration (14d), minimized gaseous volatilization were detected in 10%BB composting. Aspect of non-degradability and enrichment-concentration properties of heavy metals, the total copper (Cu) and zinc (Zn) were increased (from initial 12.71-17.91 to final 16.36-29.36 mg/kg and 107.39-146.58-161.48-211.91 mg/ kg). In view of available diethylene triamine pentacetic acid (DTPA) extractable form, DTPA-Cu and DTPA-Zn from 4.29 to 6.57 and 31.66-39.32 mg/kg decreased to 3.75-4.82 and 23.43-40.54 mg/kg, especially the maximized passivation rate of 46.95% and 56.27% were present in 10%BB composting. Additionally, bacterial diversity of biochar-based composting was increased (1817-2310 OTUs) than control (1686 OTUs) and dominant by Firmicutes (52.75%), Bacteroidetes (28.41%) and Actinobacteriota (13.98%). Validated 10% biochar-based composting is the optimal option for effectively control environmental pollution to obtain hygienic composting.

  • 18.
    Ekström, Karin M
    et al.
    University of Borås, School of Business and IT.
    Salomonson, Nicklas
    University of Borås, School of Business and IT.
    Looking into the kaleidoscope: different views on reuse and recycling of clothes2012Conference paper (Other academic)
    Abstract [en]

    A major environmental problem in Sweden is the fact that clothes are disposed of in the garbage rather than being reused or recycled. A study (Carlsson et al. 2011) indicates that 8 kg textiles are disposed of in the garbage per individual and year. Another study (Gustafsson and Ekström 2012) shows that 62 percent of the Swedes dispose usable clothes in the garbage. From an environmental perspective, it would be more beneficial to reuse or recycle textiles. In addition, producing textiles requires natural resources. For example, in order to produce 1 kg cotton, it takes between 7.000-29.000 litre water and between 0,3 to 1 kg oil (Fletcher 2008). Factors contributing to the high amount of clothes disposed of are an emphasis on fast fashion, low prices, increased welfare as well as more consumers following the fashion. However, this pattern of consumption is not sustainable in the long run (Ekström et al. 2012). The purpose of this paper is to increase the understanding of how clothing consumption can be more sustainable by demonstrating how a network consisting of different clothing retailers, recycling companies, charity organizations, consumer organizations, environmental organizations, branch organizations and authorities discuss and deal with this problem. The paper focuses on how they work with reuse and recycling today, but also on what they consider as important, for themselves as well as others, to do in the future in order to increase the level of reuse and recycling of clothes. The empirical data is based on a survey as well as the results from six one- day meetings in the network over 1,5 years time. The results show that there are individual as well as collaborative ways to deal with the problem. The participants in the network agree upon several things. First of all, they recognise the need that all the actors in the network have to contribute and collaborate to solve the problem. Second, there has to be long term solutions that are both environmentally as well as financially sound. Third, a consumer perspective that centres on solutions that enables consumers to act more environmentally friendly is a prerequisite in order to reduce disposal of clothes in the garbage and instead increase reuse and recycling. Finally, the role of marketing is pervasive for succeeding to solve this problem both by making the consumers aware of the effects clothes disposal have on the environment, but also by communicating to the consumer that there are alternative ways to dispose of clothes such as reuse and recycling. In order to approach the problem of how consumption can be more sustainable, a kaleidoscopic outlook presenting different views and solutions is suggested.

  • 19.
    Eriksson, Jimmy
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Klasson, Niklas
    University of Borås, Faculty of Textiles, Engineering and Business.
    Implementering av PV-system på Trafikverkets teknikhus2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Solar cell technology has been around for a long time and has with continuous development grown to become a viable alternative for power supply. The advantage of solar panels comes with the possibilities for installations on surfaces such as facades and roofs.

    Västlänken is a large ongoing project in Gothenburg, the project includes the construction of new train stations and the construction of a new railway. This includes the establishment of new signal boxes along the railway. In conjunction with this, Sweco Sweden has raised the question of how to best utilize the roof of these signal boxes.

    The purpose of this thesis is, in cooperation with Sweco Sweden, to investigate the potential output power that can be generated by a photovoltaic system once installed on the signal boxes located in Gothenburg, whether installation of a PV system is possible with the existing equipment in a signal box and how much of the equipment in the signal box that can be powered by the PV-system.

    For the calculation of potential output power from PV-systems, a simulation program designed by Energiforsk AB was used. Regarding the installation options a direct contact with the company that supplies rectiverters to the Swedish Transport Administration was established.

    The results shows that the output power of PV-systems depends on the installation area and the efficiency of the photovoltaic modules. The output power varies from 0.10 kW at the lowest efficiency and the smallest installation area to 1,62 kW at the highest efficiency and largest installation area. Installation of a PV-system is not feasible with the existing equipment in the signal boxes as additional modules and solar chargers are needed for a working system. With the result, the load for the uninterruptible power and the output power from the PV system could be compared for Scenario 1 and Scenario 2, as the load was known for just these two. The part of the load that can be met by the PV-system was calculated to be 1,6 % ̶ 10,1 % for Scenario 1 and 2,3 % ̶ 18,2 % for Scenario 2

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  • 20.
    Gaur, V K
    et al.
    School of Energy and Chemical Engineering, UNIST, Ulsan 44919, Republic of Korea, Centre for Energy and Environmental Sustainability, Lucknow, India, Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Lucknow, India.
    Gautam, K
    Centre for Energy and Environmental Sustainability, Lucknow, India.
    Sharma, P
    Department of Bioengineering, Integral University, Lucknow, India.
    Gupta, P
    Bioscience and Biotechnology Department, Banasthali University, Rajasthan, India.
    Dwivedi, S
    Herbs India Pharma, Lucknow 226017, India.
    Srivastava, J K
    Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Lucknow, India.
    Varjani, S
    Gujarat Pollution Control Board, Gandhinagar, Gujarat 382 010, India.
    Ngo, H H
    Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
    Kim, S H
    School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
    Chang, J S
    Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan.
    Bui, X T
    Faculty of Environment and Natural Resources, Ho Chi Minh City University of Technology (HCMUT), Ho Chi Minh City 700000, Viet Nam.
    Taherzadeh, Mohammad J
    University of Borås, Faculty of Textiles, Engineering and Business.
    Parra-Saldivar, R
    Escuela de Ingeniería y Ciencias-Centro de Biotecnología-FEMSA, Tecnológico de Monterrey, Campus Monterrey, Mexico.
    Sustainable strategies for combating hydrocarbon pollution: Special emphasis on mobil oil bioremediation2022In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 832, article id 155083Article in journal (Refereed)
    Abstract [en]

    The global rise in industrialization and vehicularization has led to the increasing trend in the use of different crude oil types. Among these mobil oil has major application in automobiles and different machines. The combustion of mobil oil renders a non-usable form that ultimately enters the environment thereby causing problems to environmental health. The aliphatic and aromatic hydrocarbon fraction of mobil oil has serious human and environmental health hazards. These components upon interaction with soil affect its fertility and microbial diversity. The recent advancement in the omics approach viz. metagenomics, metatranscriptomics and metaproteomics has led to increased efficiency for the use of microbial based remediation strategy. Additionally, the use of biosurfactants further aids in increasing the bioavailability and thus biodegradation of crude oil constituents. The combination of more than one approach could serve as an effective tool for efficient reduction of oil contamination from diverse ecosystems. To the best of our knowledge only a few publications on mobil oil have been published in the last decade. This systematic review could be extremely useful in designing a micro-bioremediation strategy for aquatic and terrestrial ecosystems contaminated with mobil oil or petroleum hydrocarbons that is both efficient and feasible. The state-of-art information and future research

  • 21.
    Gaur, V. K.
    et al.
    Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow Campus, Lucknow, India.
    Sharma, P.
    Department of Bioengineering, Integral University, Lucknow, India.
    Sirohi, R.
    Department of Postharvest Process and Food Engineering, GB Pant University of Agriculture and Technology, Pantnagar, India.
    Varjani, S.
    Gujarat Pollution Control Board, Gandhinagar, 382 010, Gujarat, India.
    Taherzadeh, Mohammad J
    University of Borås, Faculty of Textiles, Engineering and Business.
    Chang, J. -S
    Department of Chemical Engineering and Materials Science, College of Engineering, Tunghai University, Taichung, Taiwan.
    Yong Ng, H.
    National University of Singapore, Environmental Research Institute, 5A Engineering Drive 1, Singapore, 117411, Singapore.
    Wong, J. W. C.
    Institute of Bioresource and Agriculture, Hong Kong Baptist University, Hong Kong, Hong Kong.
    Kim, S. -H
    School of Civil and Environmental Engineering, Yonsei University, Seoul, 03722, South Korea.
    Production of biosurfactants from agro-industrial waste and waste cooking oil in a circular bioeconomy: An overview2022In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 343, article id 126059Article, review/survey (Refereed)
    Abstract [en]

    Waste generation is becoming a global concern owing to its adverse effects on environment and human health. The utilization of waste as a feedstock for production of value-added products has opened new avenues contributing to environmental sustainability. Microorganisms have been employed for production of biosurfactants as secondary metabolites by utilizing waste streams. Utilization of waste as a substrate significantly reduces the cost of overall process. Biosurfactant(s) derived from these processes can be utilized in environmental and different industrial sectors. This review focuses on global market of biosurfactants followed by discussion on production of biosurfactants from waste streams such as agro-industrial waste and waste cooking oil. The need for waste stream derived circular bioeconomy and scale up of biosurfactant production have been narrated with applications of biosurfactants in environment and industrial sectors. Road blocks and future directions for research have also been discussed. © 2021 Elsevier Ltd

  • 22.
    Hosseinian, Aida
    et al.
    Water, Energy and Environmental Engineering Research Unit, Faculty of Technology, University of Oulu, 90014, Oulu, Finland.
    Brancoli, Pedro
    University of Borås, Faculty of Textiles, Engineering and Business.
    Vali, Naeimeh
    University of Borås, Faculty of Textiles, Engineering and Business.
    Ylä-Mella, Jenni
    Pettersson, Anita
    University of Borås, Faculty of Textiles, Engineering and Business.
    Pongrácz, Eva
    University of Borås, Faculty of Textiles, Engineering and Business.
    Life cycle assessment of sewage sludge treatment: Comparison of pyrolysis with traditional methods in two Swedish municipalities2024In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 455, article id 142375Article in journal (Refereed)
    Abstract [en]

    To achieve a closed nutrient cycle and more sustainable food production, enhanced nutrient recycling in the agri-food system is a necessity. Pyrolysis is an emerging technology to recycle the nutrient content of sewage sludge. The produced biochar can be used to reduce the need for mineral fertilizers; in addition, pyrolysis can also handle potential pollutants such as microplastics and pathogens present in sewage sludge. In this research, a life cycle assessment (LCA) was carried out to determine the environmental impact of sewage sludge pyrolysis as an alternative to current practices of two different cases of sewage sludge treatment in two municipalities in Sweden. The results indicated that avoiding mineral fertilizer production by using biochar has a significant influence on the environmental benefits. Furthermore, it showed that an integrated system of anaerobic digestion followed by pyrolysis could perform as the most environmental-friendly option for sewage sludge treatment with a lower risk of transferring pollution to the soil.

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  • 23.
    Hosseinian, Aida
    et al.
    Water, Energy and Environmental Engineering Research Unit, Faculty of Technology, University of Oulu, 90014, Oulu, Finland.
    Pettersson, Anita
    University of Borås, Faculty of Textiles, Engineering and Business. Swedish Centre for Resource Recovery.
    Ylä-Mella, Jenni
    Water, Energy and Environmental Engineering Research Unit, Faculty of Technology, University of Oulu, 90014, Oulu, Finland.
    Pongrácz, Eva
    Water, Energy and Environmental Engineering Research Unit, Faculty of Technology, University of Oulu, 90014, Oulu, Finland.
    Phosphorus recovery methods from secondary resources, assessment of overall benefits and barriers with focus on the Nordic countries2023In: Journal of Material Cycles and Waste Management, ISSN 1438-4957, E-ISSN 1611-8227Article in journal (Refereed)
    Abstract [en]

    Phosphorus (P) recovery and recycling play a crucial role in improving resource efficiency, sustainable nutrient management and moving toward circular economy. Increasing demand for fertilizers, signs of geopolitical constraints, and high discharge of P to waterbodies are the other reasons to pursue the circularity of P. Various research have been carrying out and several processes have been developed for P-recovery from different resources. However, there is still a huge unexplored potential for P-recovery specially in the regional framework from the four main P-rich waste resources: food waste, manure, mining waste, and sewage sludge. This study reviews recovery methods of P from these secondary resources comprehensively. Additionally, it analyzes the Nordic viewpoint of P-cycle by evaluating Nordic reserves, demands, and secondary resources to gain a systematic assessment of how Nordic countries could move toward circular economy of P. Results of this study show that secondary resources of P in Nordic countries have the potential of replacing mineral fertilizer in these countries to a considerable extent. However, to overcome the challenges of P-recovery from studied resources, policymakers and researchers need to take decisions and make innovation along each other to open the new possibilities for Nordic economy.

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  • 24.
    Kharrazi, S. M.
    et al.
    Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran.
    Soleimani, M.
    Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran.
    Jokar, M.
    Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran.
    Richards, Tobias
    University of Borås, Faculty of Textiles, Engineering and Business.
    Pettersson, Anita
    University of Borås, Faculty of Textiles, Engineering and Business.
    Mirghaffari, N.
    Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran.
    Pretreatment of lignocellulosic waste as a precursor for synthesis of high porous activated carbon and its application for Pb (II) and Cr (VI) adsorption from aqueous solutions2021In: International Journal of Biological Macromolecules, ISSN 0141-8130, E-ISSN 1879-0003, Vol. 180, p. 299-310Article in journal (Refereed)
    Abstract [en]

    Effects of Elm tree sawdust pretreatments using alkali and alkaline earth metals (NaCl, KCl, CaCl2, MgCl2 and Elm tree ash) and deashing solutions (water, HCl, HNO3 and aqua regia) before the carbonization process on the porosity of produced activated carbons and Pb (II) and Cr (VI) adsorption were studied. The activated carbons were characterized by pore size distribution, surface area, FTIR, and SEM-EDX analysies. Based on the results, HCl leaching pretreatment of the biomass increased the activated carbon adsorption capacity of Cr (VI) from 114 to 190 mg g−1. The treatment of biomass with alkali and alkali earth metal salts, especially MgCl2, remarkably increased the activated carbon adsorption capacity of Pb (II) from 233 to 1430 mg g−1. The results indicated that Pb (II) adsorption was attributed to both the mesoporous structure of activated carbon and the abundance of Mg on the activated carbon's surface. On the other hand, the micropores played a major role in Cr (VI) adsorption capacity. The development of the micro- or mesoporous structure of activated carbons through pretreatment of lignocellulosic precursor could be an approach for providing high performance activated carbons for Pb (II) and Cr (VI) removal from aqueous solutions.

  • 25. Koene, Erik
    et al.
    Wittsten, Jens
    Lunds universitet.
    Robertsson, Johan
    Institute of Geophysics, ETH-Zurich.
    Andersson, Fredrik
    Institute of Geophysics,ETH-Zurich.
    Eliminating time dispersion from visco-elastic simulations with memory variables2019Conference paper (Refereed)
    Abstract [en]

    In recent years, it has been recognized that the seismic wave equation solved with a finite-difference method in time causes a predictable and removable error through the use of so-called time-dispersion transforms. These transforms were thought not to apply to visco-elastic media. However, in this paper we demonstrate that the time-dispersion transforms remain applicable when the visco-elastic wave equation is solved with memory variables, as is commonly done. The crucial insight is that both the wave equation and the memory variables are computed with the same time-dispersion error. We show how the time-dispersion transforms can be implemented in, for example, MATLAB, and demonstrate the developed theory on a visco-elastic version of the Marmousi model. Then, the time-dispersion transforms allow computation of the visco-elastic wave equation with large steps in time without significant loss of accuracy, and without having to make any modifications to the model.

  • 26.
    Kumar, M.
    et al.
    College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi Province, PR China.
    Chen, H.
    Institute of Biology, Freie Universität Berlin, Altensteinstr. 6, Berlin 14195, Germany.
    Sarsaiya, S.
    Key Laboratory of Basic Pharmacology and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China.
    Qin, S.
    College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi Province, PR China.
    Liu, H.
    College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi Province, PR China.
    Mukesh Kumar, Awasthi
    University of Borås, Faculty of Textiles, Engineering and Business. College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi Province, PR China.
    Kumar, S.
    CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur 440020, Maharashtra, India.
    Singh, L.
    CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nehru Marg, Nagpur 440020, Maharashtra, India.
    Zhang, Z.
    College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi Province, PR China.
    Bolan, N. S.
    Global Centre for Environmental Remediation, University of Newcastle, Callaghan 2308, NSW, Australia.
    Pandey, A.
    Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow 226 001, India.
    Varjani, S.
    Gujarat Pollution Control Board, Gandhnagar, India.
    Taherzadeh, Mohammad J
    University of Borås, Faculty of Textiles, Engineering and Business.
    Current research trends on micro- and nano-plastics as an emerging threat to global environment: A review2021In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 409, article id 124967Article, review/survey (Refereed)
    Abstract [en]

    Micro-and nano-plastics (MNPs) (size < 5 mm/<100 nm) epitomize one of the emergent environmental pollutants with its existence all around the globe. Their high persistence nature and release of chemicals/additives used in synthesis of plastics materials may pose cascading impacts on living organism across the globe. Natural connectivity of all the environmental compartments (terrestrial, aquatic, and atmospheric) leads to migration/dispersion of MNPs from one compartment to others. Nevertheless, the information on dispersion of MNPs across the environmental compartments and its possible impacts on living organisms are still missing. This review first acquaints with dispersion mechanisms of MNPs in the environment, its polymeric/oligomeric and chemical constituents and then emphasized its impacts on living organism. Based on the existing knowledge about the MNPs’ constituent and its potential impacts on the viability, development, lifecycle, movements, and fertility of living organism via several potential mechanisms, such as irritation, oxidative damage, digestion impairment, tissue deposition, change in gut microbial communities’ dynamics, impaired fatty acid metabolism, and molecular damage are emphasized. Finally, at the end, the review provided the challenges associated with remediation of plastics pollutions and desirable strategies, policies required along with substantial gaps in MNPs research were recommended for future studies.

  • 27. Kwame Aboh, Innocent Joy
    et al.
    Henriksson, Dag
    University of Borås, School of Engineering.
    Laursen, Jens
    Lundin, Magnus
    University of Borås, School of Engineering.
    Gormon Ofosu, Francis
    Pind, Niels
    Selin Lindgren, Eva
    Wahnström, Tomas
    University of Borås, School of Engineering.
    Characteristics and source assignment of aerosol particles in a semi-urban area in Ghana during the Harmattan season using EDXRF analysis.2007Conference paper (Other academic)
  • 28. Kwame Aboh, Innocent Joy
    et al.
    Henriksson, Dag
    University of Borås, School of Engineering.
    Laursen, Jens
    Lundin, Magnus
    University of Borås, School of Engineering.
    Pind, Niels
    Selin Lindgren, Eva
    Wahnström, Tomas
    University of Borås, School of Engineering.
    EDXRF characterisation of elemental contents in PM2.5 in a medium-sized Swedish city dominated by a modern waste incineration plant2007In: X-Ray Spectrometry, ISSN 0049-8246, E-ISSN 1097-4539, Vol. 36, no 2, p. 104-110Article in journal (Refereed)
  • 29.
    Larsson, Jonas
    University of Borås, Faculty of Textiles, Engineering and Business.
    Re:think: towards positive impact2016In: Re:: en ny  samhällssektor spirar / [ed] Nils-Krister Persson, Borås: Högskolan i Borås, 2016, , p. 2p. 55-56Chapter in book (Other academic)
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  • 30.
    Latt Furholt, Solbjørg
    University of Borås, Faculty of Textiles, Engineering and Business.
    Analys av biologiskt nedbrytbara hydrauloljor enligt OECD3012021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    OECD (Organisation for Economics Co-operation and Development) is an international organization which works for economical growth and increased sustainability through establishments of standards. A well-established OECD standard is the Closed Bottle 301D which measures the biodegradability in organic components in an aerobic and aqueous environment. The method has been applied for some selected hydraulic fluids, as a result of the increased interest of switching to “green” hydraulic fluids to decrease the damage and cost which is caused by oil spill. The purpose is to evaluate the biodegradability of selected hydraulic fluids through the standard OECD, Closed Bottle 301D. The thesis should be able to give increased knowledge and insight in the method for future evaluations.

    One of the principles behind Closed Bottle 301D is to use closed BOD-bottles where the process of biodegradation is taking place. Moreover, is it required that the hydraulic fluids have biodegraded to a minimum of 60% in 28 days in order to be classified as biodegradable according to the standard. Certain conditions are required for the hydraulic fluids in order to give them the chance to biodegrade in a similar way as in nature. By inoculating the BOD-bottles with microorganisms from a sludge source and adding other necessary minerals, an environment where the hydraulic fluids are given the right conditions in order to biodegrade is being created. BOD (Biological Oxygen Demand) can be used to detect the amount of biodegradable substances and how fast the microorganisms utilizes oxygen in a given amount of water. A comparison between the utilized amount of oxygen (BOD) and the theoretical amount ThOD (Theoretical Oxygen Demand) is used to describe the hydraulic fluids ability to biodegrade.

    Through this experiment it turned out that no one of the selected hydraulic fluids achieved the required biodegrading value in order to be classified as biological biodegradable according to the OECD method. This doesn’t necessarily mean that the fluids cannot biodegrade, but that a longer period of time is required for that to happen. The experiment gave results which corresponded with the expected outcome regarding the biodegradation process of the fluids, which strengthens the OECD method to be a reliable method in analysing oil’s ability to biodegrade.

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    Analys av biologiskt nedbrytbara hydrauloljor enligt OECD301
  • 31.
    Liu, Tao
    et al.
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, PR China.
    Awasthi, Sanjeev K
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, PR China.
    Duan, Yumin
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, PR China.
    Pandey, Ashok
    Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow, India.
    Zhang, Zengqiang
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi, PR China.
    Mukesh Kumar, Awasthi
    University of Borås, Faculty of Textiles, Engineering and Business.
    Current status of global warming potential reduction by cleaner composting2021In: Energy and Environment, ISSN 0958-305X, E-ISSN 2048-4070, Vol. 32, no 6, p. 1002-1028Article in journal (Refereed)
    Abstract [en]

    The global living standards are currently undergoing a stage of growth; however, such improvement also brings some challenges. Global warming is the greatest threat to all living things and attracts more and more attention on a global scale due to the rapid development of economy. Carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) are the common components of greenhouse gases, which contribute to the global warming. Mitigation technologies for these gas emissions are urgently needed in every industry for the aim of cleaner production. Traditional agriculture also contributes significantly to enhance the greenhouse gases emission. Composting is a novel and economic greenhouse gases mitigation strategy compared to other technologies in terms of the organic waste disposal. Some of the European countries showed an increase of more than 50% in the composting rate. The microbial respiration, nitrification and denitrification processes, and the generation of anaerobic condition makes the emission of greenhouse gases inevitable during composting. However, although there have been a lot of papers that focused on the reduction of greenhouse gases emission in composting, none of these has summarized the methods of reducing the emission of greenhouse gases during the composting. This review discusses the benefit of composting in greenhouse gases mitigation in the organic waste management and the current methods to improve mitigation efficiency during cleaner composting. Key physical, chemical, and biological parameters related to greenhouse gases mitigation strategies were precisely studied to give a deep understanding about the emission of greenhouse gases during cleaner composting. Furthermore, the mechanism of greenhouse gases emission mitigation strategies for cleaner composting based on various external measures would be helpful for the exploration of novel and effective mitigation strategies. © The Author(s) 2019.

  • 32.
    Mohammadi, Mahtab
    et al.
    Department of Natural Resources, Isfahan University of Technology, Isfahan 8415683111, Iran.
    Mahboobi-Soofiani, Nasrollah
    Department of Natural Resources, Isfahan University of Technology, Isfahan 8415683111, Iran.
    Farhadian, Omidvar
    Department of Natural Resources, Isfahan University of Technology, Isfahan 8415683111, Iran.
    Malekpouri, Pedram
    Young Researchers and Elites Club, Science and Research Branch, Islamic Azad University, Tehran, Iran.
    Metabolic and NH4 excretion rate of fresh water species, Chondrostoma regium in response to environmental stressors, different scenarios for temperature and pH2019In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 648, p. 90-101Article in journal (Refereed)
    Abstract [en]

    Changes in water temperature and pH levels have substantial adverse effects on aquatic organisms, hence causing physiological constraint on their well-being. To understand the physiological responses of Chondrostoma regium to temperature or pH changes, standard metabolic rate (SMR), maximum metabolic rate (MMR), absolute and factorial aerobic scope (AS&FAS) as well as the specific rate of ammonia excretion (Jamm) were measured at following temperatures: acute low (3.5–4.5 °C), 24 h low (5.5–6.5 °C), 7 d low (5.5–6.5 °C), acute high (30–31 °C), 24 h high (29–30 °C), 7 d high (28–29 °C), and different pH treatments: acute low (4.3–4.4), 24 h low (4.3–4.4), 7 d low (6.3–6.4), acute high (9.8–9.9), 24 h high (9.8–9.9), 7 d high (8.8–8.9). A control group was also assigned to optimum temperature = 22–23 °C and pH = 7.8–7.9. These experimental ranges for each treatment were obtained based on critical thermal and pH thresholds, i.e., 1.9 to 31.7 °C and 2.7 to 11.1, respectively. SMR was enhanced significantly (P < 0.05) following pH treatments, except for 24 h low pH treatment. Results showed significant (P < 0.05) changes in both SMR and MMR at low and high temperature treatments. The AS was elevated following pH treatments except for acute low pH treatment in which AS significantly was declined (P < 0.05). Low temperature treatments resulted in lower AS while no significant changes in AS were observed in high temperatures. In all treatments, FAS value did not differ significantly from control, except for acute and 24 h low treatments of both temperature and pH. All high pH and temperature treatments showed a significant increase (P < 0.05) in Jamm. Histopathological results of gills indicated hyperplasia and fusion of secondary lamella and kidneys histopathology revealed necrosis and loss of tubular lumen in the most treatments. Results indicated that increases in water temperature or pH are more stressful than the lower ranges of them, suggesting higher capability of fish to adjust to the low levels of temperature or pH.

  • 33.
    Morshed, Mohammad Neaz
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Behary, Nemeshwaree
    Université de Lille, Nord de France, F-59000 Lille, France.
    Bouazizi, Nabil
    Université de Lille, Nord de France, F-59000 Lille, France.
    Guan, Jinping
    Soochow University.
    Nierstrasz, Vincent
    University of Borås, Faculty of Textiles, Engineering and Business.
    An overview on biocatalysts immobilization on textiles: preparation, progress and application in wastewater treatment2021In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298Article in journal (Refereed)
    Abstract [en]

    The immobilization of biocatalysts or other bioactive components often means their transformation from a soluble to an insoluble state by attaching them to a solid support material. Various types of fibrous textiles from both natural and synthetic sources have been studied as suitable support material for biocatalysts immobilization. Strength, inexpensiveness, high surface area, high porosity, pore size, availability in various forms, and simple preparation/functionalization techniques have made textiles a primary choice for various applications. This led to the concept of a new domain called-biocatalyst immobilization on textiles. By addressing the growing advancement in biocatalysts immobilization on textile, this study provides the first detailed overview on this topic based on the terms of preparation, progress, and application in wastewater treatment. The fundamental reason behind the necessity of biocatalysts immobilized textile as well as the potential preparation methods has been identified and discussed. The overall progress and performances of biocatalysts immobilized textile have been scrutinized and summarized based on the form of textile, catalytic activity, and various influencing factors. This review also highlighted the potential challenges and future considerations that can enhance the pervasive use of such immobilized biocatalysts in various sustainable and green chemistry applications.

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  • 34.
    Morshed, Mohammad Neaz
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Behary, Nemeshwaree
    Ecole Nationale Supérieure des Arts et Industries Textiles (ENSAIT), GEMTEX Laboratory, 2 allée Louise et Victor Champier BP 30329, 59056 Roubaix, France.
    Bouazizi, Nabil
    Normandie Université, COBRA, UMR 6014 and FR3038, Université de Rouen, INSA Rouen, CNRS, 55, Rue Saint Germain, 27000 Evreux, France.
    Vieillard, Julien
    Normandie Université, COBRA, UMR 6014 and FR3038, Université de Rouen, INSA Rouen, CNRS, 55, Rue Saint Germain, 27000 Evreux, France.
    Guan, Jinping
    College of Textile and Clothing Engineering, Soochow University, 215006 Suzhou, China.
    Nierstrasz, Vincent
    University of Borås, Faculty of Textiles, Engineering and Business.
    Modification of fibrous membrane for organic andpathogenic contaminants removal: from design toapplication2020In: RSC Advances, E-ISSN 2046-2069, Vol. 10, p. 13155-13173, article id 13155Article in journal (Refereed)
    Abstract [en]

    In this study, a flexible multifunctional fibrous membrane for heterogeneous Fenton-like removal of organicand pathogenic contaminants from wastewater was developed by immobilizing zerovalent ironnanoparticles (Fe-NPs) on an amine/thiol grafted polyester membrane. Full characterization of theresulting polyester membranes allowed validation of successful grafting of amine/thiol (NH2 or SH)functional groups and immobilization of Fe-NPs (50–150 nm). The Fenton-like functionality of ironimmobilized fibrous membranes (PET–Fe, PET–Si–NH2–Fe, PET–NH2–Fe, and PET–SH–Fe) in thepresence of hydrogen peroxide (H2O2) was comparatively studied in the removal of crystal violet dye(50 mg L1). The effect of pH, amount of iron and H2O2 concentration on dye removal wassystematically investigated. The highest dye removal yield reached 98.87% in 22 min at a rate constant0.1919 min1 (R2 ¼ 95.36) for PET–SH–Fe providing 78% toxicity reduction assessed by COD analysis.These membranes could be reused for up to seven repeated cycles. Kinetics and postulated mechanismof colour removal were proposed by examining the above results. In addition, the resultant membranesshowed substantial antibacterial activity against pathogenic bacteria (Staphylococcus epidermidis,Escherichia coli) strains studied through disc diffusion-zone inhibitory and optical density analysis. Thesefindings are of great importance because they provide a prospect of textile-based flexible catalysts inheterogeneous Fenton-like systems for environmental and green chemistry applications.

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  • 35.
    Mukesh Kumar, Awasthi
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business. College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China; .
    Singh, E
    CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, 440 020, India.
    Binod, P
    CSIR-National Institute for Interdisciplinary Science and Technology (CSIR- NIIST), Thiruvananthapuram, Kerala, 695 019, India.
    Sindhu, R
    CSIR-National Institute for Interdisciplinary Science and Technology (CSIR- NIIST), Thiruvananthapuram, Kerala, 695 019, India.
    Sarsaiya, S
    Key Laboratory of Basic Pharmacology and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi, Guizhou, China.
    Kumar, A
    CSIR-National Environmental Engineering Research Institute, Nagpur, Maharashtra, 440 020, India.
    Chen, H Y
    Institute of Biology, Freie Universität Berlin Altensteinstr, Berlin, Germany.
    Duan, Y M
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
    Pandey, A
    Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Lucknow, 226 001, India.
    Kumar Ramamoorthy, Sunil
    University of Borås, Faculty of Textiles, Engineering and Business.
    Taherzadeh, Mohammad J
    University of Borås, Faculty of Textiles, Engineering and Business.
    Li, J
    College of Resources and Environmental Sciences, China Agricultural University, Yuanmingyuan West Road No.2, Haidian District, 100193, Beijing, China.
    Zhang, Z Q
    College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
    Biotechnological strategies for bio-transforming biosolid into resources toward circular bio-economy: A review2022In: Renewable & sustainable energy reviews, ISSN 1364-0321, E-ISSN 1879-0690, Vol. 156, article id 111987Article, review/survey (Refereed)
    Abstract [en]

    Biosolids are the biological organic matter extracted from various treatment processes of wastewater which are considered as a rich source of energy and nutrients. The most commonly used method for the disposal of biosolids is landfilling. But this causes the loss of valuable nutrients and creates environmental issues. Circular economy approaches provide a better way for utilization these resources in a sustainable manner. This allows maximum utilization of resources and many natural resources can be preserved and utilized for future generations. The present review provides a comprehensive illustration of biotechnological approaches for the utilization of biosolids. Various process strategies for the utilization of biosolids for the production of energy, fuels and valueadded products are discussed. The utilization of this rich organic matter under circular economy has also been described in detail.

  • 36.
    Nemat, Babak
    University of Borås, Faculty of Textiles, Engineering and Business.
    Food packaging design to support sorting behavior2022Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Due to population growth, urbanization, higher income levels, and intensive use of packaging products, the amount of waste generated by households, including food packaging waste, has been increasing continuously worldwide, posing a massive threat to societies and the environment. Therefore, proper waste management has become a challenging environmental issue and priority for governments. Along with the advances in technical aspects, such as material recovery technologies, more pressure has been placed on the strategies to move from disposal to waste prevention and recycling. Considerable efforts are being made to limit the overall production and the negative impact of waste on the environment and human health, as well as minimize the cost of waste management. Separation of different waste fractions at the source (i.e., source separation) is an integral part of such efforts toward enhancing the homogeneity of collected waste and improving the quality of materials for recycling. Sorting waste as a regular activity can also serve as a practice for improving residents' sorting behavior. However, the benefits of source separation cannot be gained without actively participating in the sorting process, which depends on the perception of convenience and the easy-to-implement nature of the process. Therefore, the design of food packaging has become an interesting concept for research and has received a lot of attention as a means to influence the consumers' sorting behavior. This is because in some way, consumer behavior is shaped by products as much as products are shaped by consumer behavior. Considering the unique characteristics of food packaging, it is expected that different food packages tend to influence a consumer in different ways. Hence, applying proper design strategies requires an in-depth understanding of packaging-consumer interactions throughout the sorting process. However, the research in this field, except for a few, is too general and usually associated with the impractical experiences around packaging material and functions. Instead, a design-oriented approach should be considered, in addition to practical experience. This thesis, therefore, aims to unfold the packaging design potential to support sorting behavior. Furthermore, how is it possible to maintain and empower the user-packaging interaction by applying different design strategies? In this case, the potential of design approaches, namely the user-centered design (UCD), design for sustainable behavior (DfSB), and design affordance, have been discussed. Moreover, the advantages and opportunities of these methods to improve packaging design, thus influencing sorting behavior, are investigated using different research methodologies.

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  • 37.
    Nemat, Babak
    University of Borås, Faculty of Textiles, Engineering and Business.
    The Role of Food Packaging Design in Consumer Recycling Behavior—A Literature Review2019In: Sustainability, E-ISSN 2071-1050, E-ISSN 2071-1050, Vol. 11, no 16, article id 4350Article in journal (Refereed)
    Abstract [en]

    Household waste sorting at the source is an essential part of the waste management system in many countries. Correct sorting of this waste, including food packaging waste, is cost-effective, it facilitates the recycling process and enhances the quality of the recycled product. Although there is a growing body of research that studies the effect of different attributes of food packaging on household recycling behavior, the effect of these attributes on the sorting of the food packaging waste is not well known. This contribution reviews work that studies the relationship between attributes of food packaging and consumer sorting behavior. The review highlights the potential of the visual attributes and the quality of packaging as a communication channel for encouraging consumers to sort the food packaging waste. The efficiency of the waste management system and the quality of recycled products can hence be affected by the proper design of food packaging.

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  • 38.
    Nemat, Babak
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Razzaghi, Mohammad
    Department of Industrial Design, Faculty of Applied Arts, University of Art, Tehran, Iran.
    Bolton, Kim
    University of Borås, Faculty of Textiles, Engineering and Business.
    Rousta, Kamran
    University of Borås, Faculty of Textiles, Engineering and Business.
    Design affordance of plastic food packaging for consumer sorting behavior2022In: Resources, Conservation and Recycling, ISSN 0921-3449, E-ISSN 1879-0658, Vol. 177Article in journal (Refereed)
    Abstract [en]

    This research aims to understand why consumers miss-sort plastic food packaging and to what extent the design affordance of packaging can influence consumer sorting behavior. A photo-based observation study and semi-structured interviews were used to gain a deeper understanding of the miss-sorting behavior and how it could be affected by design affordance. This explorative study suggested that the packaging form, size, durability, haptic aspects, and visual communicative properties influence how consumers perceive the value of packaging. This is important, because packaging with low attributed values are not considered worth recycling or correctly sorted and are more likely to be miss-sorted. Hence, a well-afforded food packaging design is expected to improve how consumers perceive the value of packaging and to consequently improve sorting behavior.

  • 39.
    Nie, Z.
    et al.
    College of Resources and Environment, Hunan Agricultural University, Changsha 410128, Hunan Province, China.
    Yan, B.
    College of Plant Protection, Hunan Agricultural University, Changsha 410128, Hunan Province, China.
    Xu, Y.
    College of Plant Protection, Hunan Agricultural University, Changsha 410128, Hunan Province, China.
    Mukesh Kumar, Awasthi
    University of Borås, Faculty of Textiles, Engineering and Business. College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province, 712100, PR China.
    Yang, H.
    College of Plant Protection, Hunan Agricultural University, Changsha 410128, Hunan Province, China.
    Characterization of pyridine biodegradation by two Enterobacter sp. strains immobilized on Solidago canadensis L. stem derived biochar2021In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 414, article id 125577Article in journal (Refereed)
    Abstract [en]

    In this study, two pyridine-degrading strains namely Enterobacter cloacae complex sp. BD17 and Enterobacter sp.BD19 were isolated from the aerobic tank of a pesticide wastewater treatment plant. The mixed bacteria H4 composed of BD17 and BD19 at a ratio of 1:1 was immobilized by Solidago canadensis L. stem biochar with a dosage of 2 g·L−1. The highest pyridine removal rate of 91.70% was achieved by the immobilized H4 at an initial pyridine concentration of 200 mg·L−1, pH of 7.0, temperature of 28 °C and salinity of 3.0% within 36 h. The main intermediates of pyridine degradation by BD17 were pyridine-2-carboxamide, 2-aminopropanediamide, and 2-aminoacetamide, while 2-picolinic acid, isopropyl acetate, isopropyl alcohol, and acetaldehyde were identified with BD19 by adopting GC-MS technique. Interestingly, there was a possibility of totally mineralization of pyridine and the corresponding degradation pathways of BD17 and BD19 were revealed for the first time.

  • 40.
    Pervez, Md. Nahid
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Mahboubi, Amir
    University of Borås, Faculty of Textiles, Engineering and Business.
    Uwineza, Clarisse
    University of Borås, Faculty of Textiles, Engineering and Business.
    Zarra, T
    Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy.
    Belgiorno, V
    Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy.
    Naddeo, V
    Sanitary Environmental Engineering Division (SEED), Department of Civil Engineering, University of Salerno, via Giovanni Paolo II 132, 84084 Fisciano, SA, Italy.
    Taherzadeh, Mohammad J
    University of Borås, Faculty of Textiles, Engineering and Business.
    Factors influencing pressure-driven membrane-assisted volatile fatty acids recovery and purification: A review2022In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 817Article, review/survey (Refereed)
    Abstract [en]

    Volatile fatty acids (VFAs) are building block chemicals that can be produced through bioconversion of organic waste streams via anaerobic digestion as intermediate products. Purified VFAs are applicable in a wide range of industrial applications such as food, textiles, cosmetics, pharmaceuticals etc. production. The present review focuses on VFAs recovery methods and technologies such as adsorption, distillation, extraction, gas stripping, esterification and membrane based techniques etc., while presenting a discussion of their pros and cons. Moreover, a great attention has been given to the recovery of VFAs through membrane filtration as a promising sustainable clarification, fractionation and concentration approach. In this regard, a thorough overview of factors affecting membrane filtration performance for VFAs recovery has been presented. Filtration techniques such as nanofiltration and reverse osmosis have shown to be capable of recovering over 90% of VFAs content from organic effluent steams, proving the direct effect of membrane materials/surface chemistry, pore size and solution pH in recovery success level. Overall, this review presents a new insight into challenges and potentials of membrane filtration for VFAs recovery based on the effects of factors such as operational parameters, membrane properties and effluent characteristics.

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  • 41.
    Robertsson, J.
    et al.
    Institute of Geophysics, ETH-Zurich.
    Amundsen, L.
    Norwegian university of science and technology.
    Andersson, F.
    Institute of Geophysics, ETH-Zurich.
    Van Manen, D.
    Institute of Geophysics,ETH-Zurich.
    Eggenberger, K.
    Wittsten, Jens
    Lunds universitet.
    Pedersen, ÅS.
    Haavik, K.
    Solheim, O. A.
    Multi-source acquisition based on the principles of signal apparition2019Conference paper (Refereed)
    Abstract [en]

    Signal apparition is a recent signal processing advance that has numerous applications in seismic data acquisition and processing. In this paper we review the basic principles of signal apparition and discuss applications related to simultaneous source acquisition. We discuss the generalization of the technique to large number of sources and the application in a full 3D configuration enabling large productivity gains and the acquisition of broad band seismic data.

  • 42.
    Rosén, Karl G
    University of Borås, School of Engineering.
    In-cabin air quality: electrostatic field to capture sub-micron size particles2014Conference paper (Refereed)
    Abstract [en]

    Traffic is regarded as the main reason for the air pollution problem and it seems obvious to try to reduce the particulate bioload affecting those travelling. Recently Volvo Cars introduced their Interior Air Quality System forcing the cabin air to be recirculated in case of a high level of noxious gases shutting out carbon monoxide, ground-level ozone and nitrogen dioxide. Ionization is another component of Mercedes AIR-BALANCE package. Considering the fact that it is the nano-size ultra-fine particles (UFP) that are known to cause the “oxidative” stress of the immune system one may ask if even the most well designed HEPA filter would sufficiently affect the in-cabin air particulates or is there a need for additional means by which the sub-micron class particles may be captured. An electrostatic field of sufficient strength may serve as an additional tool to clean the cabin air from sub-micron size particles.The initial data from the study indicate that electrostatic mechanisms substantially add to the in-cabin air cleaning properties of ultra-fine particulates compared to the standard filtering technology when recirculating the cabin air.

  • 43.
    Rosén, Karl G
    University of Borås, School of Engineering.
    The impact of electrostatic air cleaning in free-ranging egg production2014Conference paper (Refereed)
    Abstract [en]

    The development of a patented polymer based electron emitting technology (EAC) has provided a means to study the impact of reduced bioload in stable air on productivity. Apart from capturing particles in a negatively charged electrostatic field operating over the entire stable with hundreds of meters of emitting structure, the electrons combine with oxygen and vapor to produce H2O2 to block mould metabolism. Before and after data from three egg producing farms with 20-50 000 free-roaming layers were collected as part of their standard productivity control. The number of mould colonies decreased from >7 (range 7 – 30) to single colonies. Lay percentage over the production period covering 22 to 75 weeks of age increased by 3% and the feed conversion improved by 9%. During the last 10 production weeks, the overall improvement in productivity was 27% enabling the farmers to maintain a high productivity despite an ageing population of layers.

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  • 44.
    Rousta, Kamran
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Bolton, Kim
    University of Borås, Faculty of Textiles, Engineering and Business.
    Dahlén, Lisa
    Luleå University of Technology.
    A Procedure to Transform Recycling Behavior for Source Separation of Household Waste2016In: Recycling, ISSN 2072-4292, Vol. 1, no 1, p. 147-165Article in journal (Refereed)
    Abstract [en]

    Household waste separation at the source is a central part of waste management systems in Sweden. Resource recovery of materials and energy increased substantially after separate collection was implemented in the 1990s. A procedure to transform recycling behavior for the sorting of household waste—called the recycling behavior transition (RBT) procedure—was designed and implemented in a waste management system in Sweden. Repeated use of this procedure, which will assist in the continual improvement of household sorting, consists of the following four consecutive steps: (i) evaluating the current sorting behavior; (ii) identifying appropriate interventions; (iii) implementing the interventions, and; (iv) assessing the quantitative effect of the interventions. This procedure follows action research methodology and it is the first time that such a procedure has been developed and implemented for the sorting of household waste. The procedure can easily be adapted to any source separation system (which may have different local situations) and, by improving the source separation, will increase the resource recovery in the waste management system. The RBT procedure, together with its strengths and weaknesses, is discussed in this paper, and its implementation is exemplified by a pilot study done in Sweden.

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  • 45.
    Samsioe, Emma
    et al.
    Lunds Universitet.
    Sörum, Niklas
    University of Borås, Faculty of Textiles, Engineering and Business.
    Fuentes, Christian
    University of Borås, Faculty of Textiles, Engineering and Business.
    Tölg, Reka
    Lunds universitet.
    Digitala plattformar och cirkulär klädkonsumtion: Möjligheter, utmaningar och vägar framåt: En rapport från forskningsprojektet Framtidens hållbara kläder2024Report (Other academic)
    Abstract [sv]

    Dagens modebransch står inför ett antal hållbarhetsutmaningar. Dessa utmaningar utgörs exempelvis av omfattande utsläpp, hög användning av primära råvaror, linjära leveranskedjor och en fast fashion-kultur bland företag och konsumenter som bland annat resulterar i låg användningsgrad för kläder. Cirkulär ekonomi är ett sätt att ar-beta med förändring med fokus på dessa utmaningar och syftar till att bryta den linjära ekonomin. För att få till detta ”slutna” kretslopp krävs stöd i cirkulära direktiv och policyer, tekniker som kan etablera och stödja minskning, återanvändning och återvinning av resurser, material och produkter, samt affärsmodeller och distribution av cirkulära produkter och tjänster. Men för att den cirkulära ekonomin ska bli möjlig krävs även att konsumenten involveras. Den här rapporten redovisar resultaten från en konsumentstudie med fokus på konsumenters erfarenheter av digitala tjänster för cirkulär ekonomi och visar på att det finns möjligheter, men också svårigheter, med att vara en cirkulär konsument.

    Till exempel kräver denna form av konsumtion att det finns en tillgänglig infrastruktur och olika hjälpmedel (såsom digitala plattformar, butiker, utlåningsverksamheter och så vidare), samt att konsumenten både har kunskap och kompetens att använda den typ av tjänster som skapats. Våra resultat visar att cirkulär konsumtion är en tidskrävande aktivitet som ofta kolliderar med vardagens redan inarbetade rutiner. Dessutom kan det vara ekonomiskt krävande att vara en cirkulär modekonsument. Detta betyder att cirkulär konsumtion behöver uppfattas som meningsfull för att konsumenten ska engagera sig i en förändring mot mer cirkulär modekonsumtion.

    Många tjänster uppfattas också som dyra och därmed blir värdet av tjänsten en fråga. Avslutningsvis visar studien att cirkulära tjänster fyller en funktion för de som vill anpassa sin konsumtion av kläder för att vara cirkulära, men att de tillgängliga digitala plattformarna för cirkulär klädkonsumtion lider av ett antal problem som be-höver åtgärdas för att integrationen av cirkulära tjänster i konsumenters vardag på en större skala ska vara möjlig.

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  • 46. Selin Lindgren, Eva
    et al.
    Henriksson, Dag
    University of Borås, School of Engineering.
    Lundin, Magnus
    University of Borås, School of Engineering.
    Therning, Peter
    University of Borås, School of Engineering.
    Laursen, Jens
    Pind, Niels
    Possible Indicators for bio-mass burning in a small Swedish city as studied by EDXRF techniques2005Conference paper (Other academic)
  • 47.
    Strömbom, Hanna
    University of Borås, Faculty of Textiles, Engineering and Business.
    Kartläggning av klimatförbättrad betong2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    During the production of concrete, a large amount of carbon dioxide is emitted. The Swedish national climate target goal aims for climate-neutral concrete on the Swedish market by 2030 and to further attain a net zero emission by 2045. The concrete production industry is working on strategies to reach these goals and thereby attain a lower climate impact.

    This study aims to examine how the concrete industry works towards climate neutrality and to see how far they have come in accordance to this goal. A further purpose for this study is to increase the statistics for climate improved concrete and to compare how the climate improved concrete measures up to the revised standard ftSS 137003:2020.

    The study made use of a literature review, a survey and a document analysis. Through the literature review, information was acquired on theoretical background relating to the interest of study. The data obtained from the survey sent out to concrete producers constituted the primary source. This provided information regarding the current situation in relation to climate improved concrete. As a complement to the survey, the study also did a document analysis of EPDs as well as the revised standard. This tool was used to analyse existing climate improved concrete respectively to examine the revised standard in order to establish how alterations in the standard affects the conditions for climate improved concrete.

    Based on the results obtained from the survey and analysis of the EPDs, some climate improved concrete are currently available, yet in limited usage. Most of the concrete producers are lacking climate improved concrete on the market, but most of them are working towards this goal with the aim to have such a product on the market within one to three years. The majority of concrete producers are convinced that their concrete will be climate-neutral by the year 2045.

    Both the literature review and the survey confirmed the importance of collaboration between different actors during an early stage in order to attain climate neutrality in concrete production. To attain the climate goals it requires that concrete producers continue to work towards the climate goals, but moreover, the knowledge and awareness among consumers is also essential.

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    Kartläggning av klimatförbättrad betong
  • 48.
    Svensson, Jan-Erik
    et al.
    University of Borås, School of Education and Behavioural Science.
    Lundberg, Stefan
    Inventering av vandrarmusslans larver i Göta kanal och Kinda kanal 20132014Report (Other academic)
    Abstract [sv]

    Under sensommaren 2013 inventerades 14 lokaler längs Göta kanal och tre lokaler längs Kinda kanal på förekomst av larver av vandrarmusslor. Syftet var att dokumentera deras förekomst och att skaffa ytterligare erfarenhet av metoder för provtagning av mussellarver. Inventeringen skedde genom provtagning från land; kvalitativ förekomst dokumenterades genom insamling med planktonhåv medan absoluta tätheter kvantifierades i sållade vattenprov. Mussellarver förekom på samtliga de tre lokalerna nedströms sjön Roxen i Östergötland, dvs. i kanalfåran nedströms slussen i Norsholm, i Motala ström vid Kimstad och i Norrköping. Larver påträffades inte i Kinda kanal-systemet (Linköping, Sturefors, Brokind), inte vid de fyra lokalerna uppströms Roxen i Östergötland, och inte heller vid de sju lokalerna längs kanalen i Västergötland. Vid lokalen i Norsholm skedde provtagning vid två tillfällen, 10 aug och 30 aug. Larvtätheten var hög vid den första icke-replikerade pilotprovtagningen (70 ind/liter) men avsevärt lägre tre veckor senare (4,6±2,3 ind/liter). Skillnaden antyder att produktionen av larver minskade under tidsperioden vilket styrks av en signifikant förändring i larvernas kroppsstorlek som ökade från 0,139±0,030 till 0,189±0,030 mm mellan provtagningarna. En rimlig tolkning är att täthets- och storleksskillnaden var en konsekvens av en minskad nyproduktion av larver samtidigt som överlevande larver tillväxte i storlek. Kortvariga täthetstoppar av mussellarver har ofta rapporterats i andra studier. Detaljerade studier av larvernas säsongsdynamik kräver således en tät provtagning. Vuxna vandrarmusslor kan spridas inom och mellan vattensystem på föremål som förflyttas, t.ex. båtar och vattenväxter, medan larverna i första hand sprids vid förflyttning av vatten. Ballastvatten och fisksumpar i större båtar liksom skvalpvatten i mindre fritidsbåtar och kanoter är tänkbara vektorer för larver. Även vatten i behållare med agnfisk utgör en potentiell risk. Spridningen i kanalsystem underlättas naturligtvis också av slussningen av vatten och av vattnets och larvernas naturliga rörelser. Vandrarmusslor är skildkönade och eftersom larvdödligheten ofta är hög krävs vanligen att många larver förflyttas för att nya populationer ska etableras i nya vattensystem. Dessutom, för att hon- och hangameter ska ha en rimlig möjlighet att träffa på varandra krävs att kolonisatörer av båda könen etablerar sig nära varandra. När vuxna populationer väl har byggts upp kan dock spridningen inom vattensystem gå mycket fort om larvproduktionen är hög. De tätheter vi uppmätt i denna undersökning (4,6 till 70 larver per liter) är av samma storleksordning som i svenska sjöar med etablerade bestånd av vuxna musslor. Vår bedömning är därför att larvproduktionen redan är hög i Roxen och Glan och med tanke på den livliga båttrafiken finns idag inga påtagliga spridningsbegränsningar som hindrar musslornas fortsatta etablering i Göta kanal-systemet. Deras fortsatta utbredning kommer istället att bestämmas av fysikalisk-kemiska och/eller biologiska förhållanden.

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  • 49.
    Svensson, Jan-Erik
    et al.
    University of Borås, School of Education and Behavioural Science.
    Lundberg, Stefan
    Plankton i Tyresö-Flaten och Albysjön: Resultat från en undersökning i augusti 20132014Report (Other academic)
    Abstract [sv]

    Djur- och växtplankton undersöktes i Tyresö-Flaten och Albysjön, två sjöar i Tyresö kommun, söder om Stockholm, den 9 augusti 2013. Undersökningen genomfördes på initiativ av Tyresö Fiskevårdsförening. Syftena var 1) att dokumentera mängd och sammansättning av plankton 2) att bedöma om det förekommer en eventuell djurplanktonbrist som kan påverka fiskrekryteringen och 3) att bedöma sjöarnas generella näringsstatus med hjälp av växtplanktonsamhällets egenskaper. Kvantitativa djurplanktonprov togs i epi- och hypolimnion (Limnoshämtare) och kvantitativa växtplanktonprov togs i epilimnion (Rambergrör) över respektive sjös djuphåla. Metodiken var den densamma som används i den nationella miljöövervakningen och följer vedertagna standarder och Naturvårdsverkets handledning för miljöövervakning. Dessutom togs prover på djurplankton i ytvattnet på ytterligare fyra strandnära lokaler i varje sjö, med avsikt att undersöka variationen i djurplanktonförekomst inom sjöarna. Djurplanktonmängden var stor i båda sjöarna. Detta gäller alla de tre viktigaste grupperna, dvs. hjuldjur, hinnkräftor och hoppkräftor. Den rikliga tillgången på djurplankton indikerar att planktonätande fisk hade god tillgång till föda vid undersökningstillfället. Vi bedömer att djurplanktonsamhället ger underlag för en hög produktion av fisk i båda sjöarna, men med något bättre förhållanden i Albysjön, som hade en något högre djurplanktontäthet vid vissa av de strandnära lokalerna. Växtplanktonmängden var normal men dominansen av cyanobakterier var stor och flera släkten med potentiellt toxiska arter påträffades. Det motiverar fortsatt övervakning av planktonsamhället, bl.a. med hänsyn till de hälsorisker som kan råda vid bad i samband med algblomningar. En statusklassning enligt EU:s vattendirektiv med hjälp av växtplanktonsamhället visade på god status vad gäller total växtplanktonbiovolym, men otillfredsställande status vad gäller andel cyanobakterier och förekomst av indikatorarter (TPI-index). Den sammanvägda bedömningen gav klassningen måttlig näringsstatus i både Tyresö-Flaten och Albysjön. Sjöar uppströms i Tyresåsystemet lider också av höga näringshalter och vattenvårdande åtgärder uppströms kommer troligen att förbättra statusen i Tyresö-Flaten och Albysjön. Resultaten från denna undersökning ger perspektiv åt Tyresö Fiskevårdsförenings tidigare undersökningar av djurplanktonmängder ute i Tyresöfjärdarna. Djurplanktontätheten var avsevärt högre i sötvattensmiljöerna i denna undersökning än i de delar av fjärdarna som påverkas av vatten från öppna Östersjön. Ändå drabbas båda miljöerna av periodiska blomningar av cyanobakterier, ett förhållande som ännu inte är helt utrett i vetenskaplig mening.

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  • 50.
    Trogen, Antin
    et al.
    University of Borås, Faculty of Textiles, Engineering and Business.
    Heravi, Ali Reza
    University of Borås, Faculty of Textiles, Engineering and Business.
    Materialspill i byggproduktion: Mot ett grönare byggande tillsammans!2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The construction sector is one of the industries that emits the most CO2-e, more specific 28 % of Sweden´s total emissions. Sweden has set a number of climate goals where the final goal is to by 2045 have reduced the emissions by 85 % comparing to 1990 years emissions. With this in mind the construction sector needs to take advantage of every opportunity that is given to reduce its emissions, minimizing the material waste during production is one of them. The purpose of the survey was to find out why there is material waste and make suggestions on how it can be reduced.

    The survey is based on interviews and two case studies of which one was theoretical. In the case studies different construction methods have been compared and evaluated. A total of 33 persons have been interviewed, both carpenters and supervisors. The interview material has been compiled and the statistics have been analysed in order to be able to draw conclusions from the answers in the interviews.

    The results from the case studies showed that there is a possibility to reduce the material waste with reduced CO2-e as a result. In one of the case studies emissions were reduced by 12,8 % with an increase of the price by 11,9 % as a result. In the other case study, which was theoretical, emissions were reduced by 2,7 % and in order to motivate the investment of a higher material cost the installation needed to be 5 % more effective which by great possibility was doable according to the supervisor that participated in the study.

    The conclusions of the interviews were that the willingness and commitment to reduce material waste appeared in both carpenters and supervisors. The methods to reduce material waste that is presented in the survey were considered reasonable by both carpenters and supervisors.

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    Materialspill – mot ett grönare byggande tillsammans!
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