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Published in: Journal of Material Cycles and Waste Management 6/2022

30-08-2022 | NOTE

Methanogenic diversity changes in full-scale anaerobic digesters by co-digestion of food waste and sewage sludge

Authors: Sangmin Kim, Eunji Kim, Seokhwan Hwang

Published in: Journal of Material Cycles and Waste Management | Issue 6/2022

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Abstract

This study aims to investigate the methanogenic community of anaerobic mono-digestion of sewage sludge (SL-digester) and co-digestion of sewage sludge with food waste (co-digester). The volatile solids, chemical oxygen demands, organic fractions, and ions in influent wastewater of digester can affect both SL-only digester and co-digester. An increase of [NH4+] in the anaerobic digester affected organic removal efficiency and microbial diversity. Methanobrevibacter smithii (33.8 ± 14.7%), Methanoculleus receptaculi (12.3 ± 5.3%), Methanolinea mesophila (9.5 ± 4.1%), and Methanospirillum hungatei (5.5 ± 9.2%) were dominant in every digester. These methanogens had a significant correlation with physicochemical properties (VFA and NH4+) or methanogens depending on their microbial metabolic pathway such as propionate degradation or ammonia resistance. This research would be used as a guideline to solve the complexity of full-scale plants’ operation and reveal the ‘black-box’ of anaerobic digestion.

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Metadata
Title
Methanogenic diversity changes in full-scale anaerobic digesters by co-digestion of food waste and sewage sludge
Authors
Sangmin Kim
Eunji Kim
Seokhwan Hwang
Publication date
30-08-2022
Publisher
Springer Japan
Published in
Journal of Material Cycles and Waste Management / Issue 6/2022
Print ISSN: 1438-4957
Electronic ISSN: 1611-8227
DOI
https://doi.org/10.1007/s10163-022-01482-x

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