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Kabir, Maryam M.
Alternative names
Publications (10 of 16) Show all publications
Nair, R. B., Kabir, M. M., Lennartsson, P. R., Taherzadeh, M. J. & Sárvári Horváth, I. (2017). Integrated Process for Ethanol, Biogas, and Edible Filamentous Fungi-Based Animal Feed Production from Dilute Phosphoric Acid-Pretreated Wheat Straw. Applied Biochemistry and Biotechnology, 1-15
Open this publication in new window or tab >>Integrated Process for Ethanol, Biogas, and Edible Filamentous Fungi-Based Animal Feed Production from Dilute Phosphoric Acid-Pretreated Wheat Straw
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2017 (English)In: Applied Biochemistry and Biotechnology, ISSN 0273-2289, E-ISSN 1559-0291, p. 1-15Article in journal (Refereed) Published
Abstract [en]

Integration of wheat straw for a biorefinery-based energy generation process by producing ethanol and biogas together with the production of high-protein fungal biomass (suitable for feed application) was the main focus of the present study. An edible ascomycete fungal strain Neurospora intermedia was used for the ethanol fermentation and subsequent biomass production from dilute phosphoric acid (0.7 to 1.2% w/v) pretreated wheat straw. At optimum pretreatment conditions, an ethanol yield of 84 to 90% of the theoretical maximum, based on glucan content of substrate straw, was observed from fungal fermentation post the enzymatic hydrolysis process. The biogas production from the pretreated straw slurry showed an improved methane yield potential up to 162% increase, as compared to that of the untreated straw. Additional biogas production, using the syrup, a waste stream obtained post the ethanol fermentation, resulted in a combined total energy output of 15.8 MJ/kg wheat straw. Moreover, using thin stillage (a waste stream from the first-generation wheat-based ethanol process) as a co-substrate to the biogas process resulted in an additional increase by about 14 to 27% in the total energy output as compared to using only wheat straw-based substrates. .[on SciFinder (R)]

Keywords
bioethanol, biogas, dilute acid pretreatment, filamentous fungi, integration, n. intermedia, wheat straw
National Category
Industrial Biotechnology
Identifiers
urn:nbn:se:hb:diva-12539 (URN)10.1007/s12010-017-2525-1 (DOI)000419607700005 ()2-s2.0-85020404803 (Scopus ID)
Note

Copyright (C) 2017 U.S. National Library of Medicine.; MEDLINE AN 2018665916(Journal; Article; (JOURNAL ARTICLE))

Available from: 2017-08-27 Created: 2017-08-27 Last updated: 2018-11-30Bibliographically approved
Kabir, M. M., Forgács, G., Taherzadeh, M. J. & Sárvári Horváth, I. (2015). 6 Biogas from Wastes. In: Mohammad J. Taherzadeh, Tobias Richards (Ed.), Resource Recovery to Approach Zero Municipal Waste: . CRC Press
Open this publication in new window or tab >>6 Biogas from Wastes
2015 (English)In: Resource Recovery to Approach Zero Municipal Waste / [ed] Mohammad J. Taherzadeh, Tobias Richards, CRC Press, 2015Chapter in book (Refereed)
Place, publisher, year, edition, pages
CRC Press, 2015
National Category
Engineering and Technology
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-8660 (URN)9781138892750 (ISBN)
Available from: 2016-01-20 Created: 2016-01-20 Last updated: 2018-05-03Bibliographically approved
Kabir, M. M., Forgács, G. & Sárvári Horváth, I. (2015). Biogas from Lignocellulosic Materials. In: Lignocellulose-Based Bioproducts: (pp. 207-251). Switzerland: Springer
Open this publication in new window or tab >>Biogas from Lignocellulosic Materials
2015 (English)In: Lignocellulose-Based Bioproducts, Switzerland: Springer, 2015, p. 207-251Chapter in book (Other academic)
Place, publisher, year, edition, pages
Switzerland: Springer, 2015
National Category
Engineering and Technology
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-8662 (URN)3319140329 (ISBN)
Available from: 2016-01-20 Created: 2016-01-20 Last updated: 2018-04-28Bibliographically approved
Kabir, M. M. (2015). Bioprocessing of Recalcitrant Substrates for Biogas Production. (Doctoral dissertation). Borås: Högskolan i Borås
Open this publication in new window or tab >>Bioprocessing of Recalcitrant Substrates for Biogas Production
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The application of anaerobic digestion (AD) as a sustainable waste management technology is growing worldwide, due to high energy prices as well as increasingly strict environmental regulations. The growth of the AD industry necessitates exploring new substrates for their utilisation in AD processes. The present work investigates the AD of two recalcitrant biomass: lignocelluloses and keratin-rich residues. The complex nature of these waste streams limits their biological degradation; therefore, suitable pre-processing is required prior to the AD process.In the first part of the study, the effects of organic solvent pre-treatments on bioconversion of lignocelluloses (straw and forest residues) to biogas were evaluated. Pre-treatment with N-methylmorpholine-N-oxide (NMMO) resulted in minor changes in the composition of the substrates, while their digestibility significantly increased. Furthermore, due to the high cost of the NNMO, the effect of pre-treatment with the recycled solvent was also explored. Since it was found that the presence of small traces of NMMO in the system after the treatment has inhibitory effects on AD, pre-treatments of forest residues using other organic solvents, i.e. acetic acid, ethanol, and methanol, were investigated too. Although pre-treatments with acetic acid and ethanol led to the highest methane yields, the techno-economical evaluation of the process showed that pre-treatment with methanol was the most viable economically, primarily due to the lower cost of methanol, compared to that of the other solvents.In the second part of the work, wool textile wastes were subjected to biogas production. Wool is mainly composed of keratin, an extremely strong and resistible structural protein. Thermal, enzymatic and combined treatments were, therefore, performed to enhance the methane yield. The soluble protein content of the pre-treated samples showed that combined thermal and enzymatic treatments had significantly positive effects on wool degradation, resulting in the highest methane yields, i.e. 10–20-fold higher methane production, compared to that obtained from the untreated samples.In the last part of this thesis work, dry digestion of wheat straw and wool textile waste, as well as their co-digestion were studied. The total solid (TS) contents applied in the digesters were between 6–30% during the investigations. The volumetric methane productivity was significantly enhanced when the TS was increased from 6 to 13–21%. This can be a beneficial factor when considering the economic feasibility of large-scale dry AD processes.

Place, publisher, year, edition, pages
Borås: Högskolan i Borås, 2015. p. 65
Series
Skrifter från Högskolan i Borås, ISSN 0280-381X ; 70
Keywords
anaerobic digestion, biogas, lignocellulose, wool, keratin, pre-treatment, co-digestion, dry digestion, economic evaluation
National Category
Environmental Biotechnology
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-597 (URN)978-91-87525-69-8 (ISBN)978-91-87525-70-4 (ISBN)
Public defence
2015-10-09, D207, Allégatan 1, Borås, Sweden., Borås, 10:00 (English)
Available from: 2015-09-04 Created: 2015-08-10 Last updated: 2016-01-13Bibliographically approved
Kabir, M. M., Taherzadeh, M. J. & Sárvári Horváth, I. (2015). Dry anaerobic digestion of lignocellulosic and protein residues. Biofuel Research Journal, 2(4), 309-316
Open this publication in new window or tab >>Dry anaerobic digestion of lignocellulosic and protein residues
2015 (English)In: Biofuel Research Journal, Vol. 2, no 4, p. 309-316Article in journal (Refereed) Published
Abstract [en]

Utilisation of wheat straw and wool textile waste in dry anaerobic digestion (AD) process was investigated. Dry-AD of the individual substrates as well as co-digestion of those were evaluated using different total solid (TS) contents ranging between 6 to 30%. Additionally, the effects of the addition of nutrients and cellulose- or protein-degrading enzymes on the performance of the AD process were also investigated. Dry-AD of the wheat straw resulted in methane yields of 0.081 – 0.200 Nm3CH4/kgVS with the lowest and highest values obtained at 30 and 21% TS, respectively. The addition of the cellulolytic enzymes could significantly increase the yield in the reactor containing 13% TS (0.231 Nm3CH4/kg VS). Likewise, degradation of wool textile waste was enhanced significantly at TS of 13% with the addition of the protein-degrading enzyme (0.131 Nm3CH4/kg VS). Furthermore, the co-digestion of these two substrates showed higher methane yields compared with the methane potentials calculated for the individual fractions at all the investigated TS contents due to synergetic effects and better nutritional balance.

National Category
Industrial Biotechnology
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-3742 (URN)10.18331/BRJ2015.2.4.5 (DOI)000366083700004 ()2-s2.0-84965153252 (Scopus ID)
Available from: 2015-12-06 Created: 2015-12-06 Last updated: 2018-11-29Bibliographically approved
Kabir, M. M., Rajendran, K., Taherzadeh, M. & Sárvári Horváth, I. (2015). Experimental and economical evaluation of bioconversion of forest residues to biogas using organosolv pretreatment. Bioresource Technology, 178, 201-8
Open this publication in new window or tab >>Experimental and economical evaluation of bioconversion of forest residues to biogas using organosolv pretreatment
2015 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 178, p. 201-8Article in journal (Refereed) Published
Abstract [en]

The methane potential of forest residues was compared after applying organic solvent, i.e., acetic acid, ethanol, and methanol pretreatments using batch anaerobic digestion (AD). The pretreatments were performed at 190 °C with 50% (V/V) organic solvent for 60 min. The accumulated methane yields after 40 days of AD from pretreated forest residues were between 0.23 and 0.34 m3 CH4/kg VS, which shows a significant improvement compared to 0.05 m3 CH4/kg VS, from untreated forest residues. These improvements count up to 50% increase in the methane yields from the pretreated substrates based on expected theoretical yield from carbohydrates. Among the organic solvents, pretreatments with acetic acid and ethanol led to highest methane yields, i.e., over 0.30 m3 CH4/kg VS. However, techno-economical evaluation showed, pretreatment with methanol was more viable financially. The capital investments of the plant operating 20,000 tons of forest residues varied between 56 and 60 million USD, which could be recovered in less than 8 years of operation.

Place, publisher, year, edition, pages
Elsevier, 2015
Keywords
anaerobic digestion, lignocelluloses, organosolv, pretreatments, process design
National Category
Industrial Biotechnology
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-1894 (URN)10.1016/j.biortech.2014.07.064 (DOI)000347150700026 ()25113881 (PubMedID)2320/14037 (Local ID)2320/14037 (Archive number)2320/14037 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2018-11-29Bibliographically approved
Kabir, M. M., Aslanzadeh, S., Teghammar, A., del Pilar Castillo, M., Taherzadeh, M. J. & Sárvári Horváth, I. (2014). Biogas production from lignocelluloses by N-methylmorpholine-N-oxide (NMMO) pretreatment: Achievements and Challenges. In: : . Paper presented at Green Gas Research Outlet Sweden, March 24-25. 2014, Gävle, Sweden.
Open this publication in new window or tab >>Biogas production from lignocelluloses by N-methylmorpholine-N-oxide (NMMO) pretreatment: Achievements and Challenges
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2014 (English)Conference paper, Published paper (Other academic)
Keywords
biogas, resource recovery
National Category
Industrial Biotechnology Chemical Engineering
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-7174 (URN)2320/13639 (Local ID)2320/13639 (Archive number)2320/13639 (OAI)
Conference
Green Gas Research Outlet Sweden, March 24-25. 2014, Gävle, Sweden
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2016-06-22Bibliographically approved
Sárvári Horváth, I., del Pilar Castillo, M., Berglund Odhner, P., Teghammar, A., Kabir, M. M., Olsson, M. & Ascue, J. (2013). Biogas från lignocellulosa Tekno: ekonomisk utvärdering av förbehandling med NMMO. Kunskapscentrumet Waste refinery, Sveriges tekniska forskningsinstitut
Open this publication in new window or tab >>Biogas från lignocellulosa Tekno: ekonomisk utvärdering av förbehandling med NMMO
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2013 (English)Report (Other academic)
Abstract [en]

Biogas has been identified as one of the most cost - effective renewable fuels. In order to increase biogas production, yields from traditionally substrates either need to be improved or other alternative substrates must be made available for anaerobic digestion. Cellulose and lignocellulose rich wastes are available in large amounts and have great potential to be utilized for biogas production. This project focused on the opti mization of the pretreatment conditions when using the organic solvent N - methylmorpholine - N - oxide (NMMO) to enhance the methane yield from forest residues and straw. It also focused on a techno - economic evaluation of this pre - treatment technology. NMMO has previously been shown to be effective in dissolving cellulose and, as a consequence, in increasing the methane yield during the subsequent digestion. The goal of this project was to develop a technology that increases energy production from domestic subst rates in a cost - effective and environmentally friendly way. The treatment works well at lower temperatures (90°C), which means that water from the district heating system can advantageously be used in the treatment. The results showed that treatment with NMMO at 90°C doubles the methane yield from forest residues and increases the methane yield from straw by 50 %. For the techno - economic evaluation, the base case was assumed to be a facility with a capacity of 100 000 tones forest residues/year. After a w ashing and filtration step, the treated material will be utilized in a co - digestion process where 33% of the incoming material consists of forest residues and the rest is source - sorted household waste. The scale - up, process design, simulation and calculati ons were made using the software tool Intelligen SuperPro Design ® . The total investment costs were calculated to be about 145 million €, when forest residues or straw are to be used as raw material. Costs for operation (i.e. raw materials, energy, waste ma nagement, maintenance and personnel costs) were set against the incomes from the products (i.e. methane, carbon dioxide and the lignin - rich digested residue) to see if the process was profitable. The internal return rate (IRR), a parameter that indicates w hether a process is profitable or not, indicated that evaluated processes with capacities over 50 000 tons forest residues/year are profitable. However, co - digestion of forest residues with sewage sludge instead of household waste was not profitable. Both the laboratory results and the energy and economic calculations showed that the washing and filtration step is critical for the proposed process. The energy balance calculation resulted in an EROI value of 0.5, which means that the produced methane from fo rest residues counted up only the half of the energy needed for the treatment as well as NMMO separation and recycling. It is important to separate the NMMO well after the treatment, since remaining NMMO at concentrations higher than 0.002% were found to i nhibit the subsequent digestion step. Also it was showed out to be important that the washing step operates with small amounts of water to save energy within the NMMO recovery. A rotary vacuum filtration is therefore recommended for the washing and filtrat ion step, and a mechanical vapor design is recommended for the evaporation, saving up to 70 - 90% energy compared to a conventional design. Treatment of straw with recycled instead of fresh NMMO has also been tested and equal amounts of methane were obtain ed. After a well - functioning washing and filtration step, NMMO could not be detected in the digestate residue.

Place, publisher, year, edition, pages
Kunskapscentrumet Waste refinery, Sveriges tekniska forskningsinstitut, 2013
Keywords
lignocellulosa, biogasproduktion, Resursåtervinning, skogsavfall, halm, förbehandling med NMMO, tekno - ekonomisk utvärdering
National Category
Chemical Engineering
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-4617 (URN)2320/13327 (Local ID)2320/13327 (Archive number)2320/13327 (OAI)
Available from: 2015-12-17 Created: 2015-12-17 Last updated: 2017-10-03Bibliographically approved
Kabir, M. M., Taherzadeh, M. J. & Sárvári Horváth, I. (2013). Biogas production from lignocelluloses by N-methylmorpholine-N-oxide (NMMO) pretreatment: Effect of recycling and reuse of NMMO. In: Shu Li, Jegatheesan Veeriah, Keir Greg (Ed.), : . Paper presented at The sixth annual conference on the Challenges in Environmental Science and Engineering, Daegu, South Korea, 29 Oct- 2 Nov 2013.
Open this publication in new window or tab >>Biogas production from lignocelluloses by N-methylmorpholine-N-oxide (NMMO) pretreatment: Effect of recycling and reuse of NMMO
2013 (English)In: / [ed] Shu Li, Jegatheesan Veeriah, Keir Greg, 2013Conference paper, Published paper (Refereed)
Keywords
anaerobic digestion, biogas, pretreatment, NMMO, lignocellulose, straw, forest residues, Biofuel
National Category
Industrial Biotechnology Chemical Engineering
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-7027 (URN)2320/12719 (Local ID)9780646912479 (ISBN)2320/12719 (Archive number)2320/12719 (OAI)
Conference
The sixth annual conference on the Challenges in Environmental Science and Engineering, Daegu, South Korea, 29 Oct- 2 Nov 2013
Available from: 2015-12-22 Created: 2015-12-22 Last updated: 2016-06-27Bibliographically approved
Kabir, M. M., del Pilar Castillo, M., Taherzadeh, M. J. J. & Sárvári Horváth, I. (2013). Effect of the N-methylmorpholine-N-oxide (NMMO) pretreatment on anaerobic digestion of forest residues. BioResources, 8(4), 5409-5423
Open this publication in new window or tab >>Effect of the N-methylmorpholine-N-oxide (NMMO) pretreatment on anaerobic digestion of forest residues
2013 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 8, no 4, p. 5409-5423Article in journal (Refereed) Published
Abstract [en]

Pretreatment of forest residues using N - methylmorpholine - N - oxide (NMMO or NMO) prior to anaer obic digestion was investigated , where the effects of particle size, NMMO concentration , and pretreatment time were the primary focus. The pretreatments were carried out on forest residues; with different particle size s of 2, 4 and 8 mm , at 120 °C for 3, 7 , and 15 h in two different modes of NMMO - treatment : dissolution by 85% NMMO and swelling without dissolution using 75% NMMO solution in water . The pretreatment process led to minor changes in the composition of the forest residues . The best improvement in methane yield of the forest residues was achieved by pretreatment using 85% NMMO for 15 h at 120 °C. This treatment resulted in 0.1 7 Nm 3 /kg VS methane yield , which corresponds to 83 % of the expected theoretical yield of carbohydrates present in the material. Additionally, the accumulated methane yield and the rate of the methane production were highly affected by the amounts of remaining NMMO when it was not well separated during the washing and filtration step s after the treatment. The p resence o f concentrations even as low as 0.008 % NMMO resulted in a decrease in the final methan e yield by 45% , while the presence of 1% of this solvent in the digester completely terminated the anaerobic digestion process.

Place, publisher, year, edition, pages
North Carolina State University: College of Natural Resources, 2013
Keywords
Forest residues, NMMO, anaerobic digestion, inhibition, biogas, lignocelluloses, degradation, Biofuel
National Category
Industrial Biotechnology Industrial Biotechnology
Research subject
Resource Recovery
Identifiers
urn:nbn:se:hb:diva-1627 (URN)000328280700050 ()2320/12723 (Local ID)2320/12723 (Archive number)2320/12723 (OAI)
Available from: 2015-11-13 Created: 2015-11-13 Last updated: 2017-12-01Bibliographically approved
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