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Food waste-derived volatile fatty acids platform using an immersed membrane bioreactor
University of Borås, Faculty of Textiles, Engineering and Business. (Resource recovery)
University of Borås, Faculty of Textiles, Engineering and Business. (Resource recovery)
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0002-1456-1840
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2018 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, article id S0960-8524(18)31650-XArticle 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]

Volatile fatty acids (VFAs) are the key intermediates from anaerobic digestion (AD) process that can be a platform to synthesize products of higher value than biogas. However, some obstacles still exist that prevent large-scale production and application of VFAs, key among them being the difficulty in recovering the acids from the fermentation medium and low product yields. In this study, a novel anaerobic immersed membrane bioreactor (iMBR) with robust cleaning capabilities, which incorporated frequent backwashing to withstand the complex AD medium, was designed and applied for production and in situ recovery of VFAs. The iMBR was fed with food waste and operated without pH control, achieving a high yield of 0.54 g VFA/g VSadded. The continuous VFA recovery process was investigated for 40 days at OLRs of 2 gVS/L/d and 4 gVS/L/d without significant change in the permeate flux at a maximum suspended solids concentration of 31 g/L.

Place, publisher, year, edition, pages
2018. article id S0960-8524(18)31650-X
Keywords [en]
Food waste, Fouling control, Immersed membrane bioreactor, In situ recovery, Volatile fatty acids
National Category
Engineering and Technology
Research subject
Resource Recovery; Resource Recovery
Identifiers
URN: urn:nbn:se:hb:diva-15420DOI: 10.1016/j.biortech.2018.11.104Scopus ID: 2-s2.0-85057618430OAI: oai:DiVA.org:hb-15420DiVA, id: diva2:1268018
Available from: 2018-12-04 Created: 2018-12-04 Last updated: 2018-12-27Bibliographically approved

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The full text will be freely available from 2020-12-01 13:14
Available from 2020-12-01 13:14

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Wainaina, StevenMahboubi, AmirSárvári Horváth, IlonaTaherzadeh, Mohammad J

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