Journal
CHEMOSPHERE
Volume 141, Issue -, Pages 134-137Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2015.06.086
Keywords
Anaerobic digestion; Microbial community; Biogas; DGGE; qPCR
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Funding
- Korea Ministry of the Environment (MOE) as an Eco-Innovation Project [E414-00071-0203-0]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2014R1A1A1002622]
- [2014K2A1A2044268]
- National Research Foundation of Korea [2014R1A1A1002622] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The goal of this study was to characterize microbial communities in anaerobic batch digesters treating different representative organic sources (sewage sludge, food waste, septage). Among the digesters, the anaerobic digester of food waste had the highest methanogen density, producing a peak value methane yield of 813.2 mL CH4/g VS. In all the digesters, acetoclastic Methanosarcinales and hydrogenotrophic Methanomicrobiales were the most dominant methanogen groups, but their proportion among the methanogens varied depending on the organic sources. The bacteria community in the anaerobic digestion (AD) of food waste and septage was distinctly different from that found in the AD of sewage sludge (primary sludge and waste activated sludge). Shifts in both bacterial and archaeal community structures could be related to differences in chemical properties, production, and accumulation of intermediates digested from organic wastes having different characteristics. These findings could prove useful in optimizing the microbial community to enhance AD process treating organic wastes. (C) 2015 Elsevier Ltd. All rights reserved.
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