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Dry Anaerobic Co-Digestion of Citrus Wastes with Keratin and Lignocellulosic Wastes: Batch And Continuous Processes
University of Borås, Faculty of Textiles, Engineering and Business. Department of Chemical and Polymer Engineering, Faculty of Engineering, Lagos State University.
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0003-4887-2433
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-1456-1840
2018 (English)In: Waste and Biomass Valorization, ISSN 1877-2641, E-ISSN 1877-265XArticle in journal (Refereed) Published
Sustainable development
According to the author(s), the content of this publication falls within the area of sustainable development.
Abstract [en]

Dry anaerobic co-digestion of citrus wastes (CW) with chicken feather (CF), wheat straw (WS) and manure bedded with straw (MS) was investigated in batch and continuous processes. Experiments were designed with different mixing ratios considering the inhibitory effect of CW, C/N ratio, and total solid content of individual feedstocks. Best mixing ratio (CF:CW:WS:MS) of 1:1:6:0, enhanced methane yield by 14% compared to the expected yield calculated according to the methane yields obtained from the individual fractions. The process performance of this mixture was then investigated in continuous plug flow reactors at different organic loading rates (OLR) with feedstock total solid contents of 21% TS (RTS21) and 32% TS (RTS32). At OLR of 2 gVS/L/d, a methane yield of 362 NmlCH4/gVSadded was obtained from RTS21, which is 13.5% higher than the yield obtained from RTS32 (319 NmlCH4/gVSadded). However, it was not possible to achieve a stable process when the OLR was further increased to 3.8 gVS/L/d; there were increased total VFAs concentrations and a decline in the biogas production.

Place, publisher, year, edition, pages
Springer Netherlands , 2018.
Keywords [en]
Solid wastes, Dry co-digestion, Batch process, Continuous process, Process performance
National Category
Industrial Biotechnology
Identifiers
URN: urn:nbn:se:hb:diva-15640DOI: 10.1007/s12649-018-0447-yScopus ID: 2-s2.0-85053541114OAI: oai:DiVA.org:hb-15640DiVA, id: diva2:1276090
Available from: 2019-01-07 Created: 2019-01-07 Last updated: 2019-01-07

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Patinvoh, ReginaLundin, MagnusTaherzadeh, Mohammad JSárvári Horváth, Ilona

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