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Effects of organic composition on the anaerobic biodegradability of food waste
Tsinghua University, Beijing, China.
Tsinghua University, Beijing, China.
University College London, London, United Kingdom.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center.ORCID iD: 0000-0002-6279-4446
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2017 (English)In: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 243, 836-845 p.Article in journal (Refereed) Published
Abstract [en]

This work investigated the influence of carbohydrates, proteins and lipids on the anaerobic digestion of food waste (FW) and the relationship between the parameters characterising digestion. Increasing the concentrations of proteins and lipids, and decreasing carbohydrate content in FW, led to high buffering capacity, reduction of proteins (52.7–65.0%) and lipids (57.4–88.2%), and methane production (385–627 mLCH4/g volatile solid), while achieving a short retention time. There were no significant correlations between the reduction of organics, hydrolysis rate constant (0.25–0.66 d−1) and composition of organics. Principal Component Analysis revealed that lipid, C, and N contents as well as the C/N ratio were the principal components for digestion. In addition, methane yield, the final concentrations of total ammonia nitrogen and free ammonia nitrogen, final pH values, and the reduction of proteins and lipids could be predicted by a second-order polynomial model, in terms of the protein and lipid weight fraction. 

Place, publisher, year, edition, pages
Elsevier Ltd , 2017. Vol. 243, 836-845 p.
National Category
Other Natural Sciences
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URN: urn:nbn:se:mdh:diva-36137DOI: 10.1016/j.biortech.2017.07.028Scopus ID: 2-s2.0-85024132111OAI: oai:DiVA.org:mdh-36137DiVA: diva2:1128723
Available from: 2017-07-27 Created: 2017-07-27 Last updated: 2017-07-27Bibliographically approved

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CiteExportLink to record
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