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Comparative study of industrial-scale high-solid biogas production from food waste: Process operation and microbiology
Linköpings universitet, Biogas Research Center. Linköpings universitet, Filosofiska fakulteten. Swedish Univ Agr Sci, Sweden.
Swedish Univ Agr Sci, Sweden.
Linköpings universitet, Institutionen för tema, Tema Miljöförändring. Linköpings universitet, Filosofiska fakulteten. Linköpings universitet, Biogas Research Center. Swedish University of Agricultural Sciences, Uppsala.
2020 (engelsk)Inngår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 304, artikkel-id 122981Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Anaerobic high-solid treatment (HST) for processing food waste and biogas production is a viable technology with considerable commercial potential. In this study, we examined and compared mesophilic and thermophilic industrial-scale plug-flow digesters. The HSTs demonstrated reasonable biogas yields from food waste (0.4-0.6 Nm(3)CH(4)/kg volatile solids). However, during operation at thermophilic conditions ammonia inhibition (similar to 2 g NH3-N/L) and acid accumulation (6-14 g/L) caused severe process disturbance. Microbial community structures diverged between the processes, with temperature appearing to be a strong driver. A unique feature of the thermophilic HSTs was high abundance of the uncultivated Clostridia group MBA03 and temperature fluctuations in one mesophilic HST were linked to drastically decreased abundance of methanogens and relative abundance of Cloacimonetes. The process data obtained in this study clearly demonstrate both potential and challenges in HST of food waste but also possibilities for management approaches to tackle process imbalance and restore process function.

sted, utgiver, år, opplag, sider
Elsevier, 2020. Vol. 304, artikkel-id 122981
Emneord [en]
Anaerobic digestion organic fraction of municipal solid waste; Full-scale dry digestion; Plug-flow reactors; Temperature
HSV kategori
Identifikatorer
URN: urn:nbn:se:liu:diva-164852DOI: 10.1016/j.biortech.2020.122981ISI: 000518852900017PubMedID: 32088624Scopus ID: 2-s2.0-85079848389OAI: oai:DiVA.org:liu-164852DiVA, id: diva2:1417704
Merknad

Funding Agencies|Swedish University of Agricultural Sciences; Linkoping University; Energiforsk [BfS2030]; Biogas Research Center; Swedish Energy AgencySwedish Energy Agency [35624-3]

Tilgjengelig fra: 2020-03-30 Laget: 2020-03-30 Sist oppdatert: 2020-04-06bibliografisk kontrollert

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