Temporal variation in methanogen communities of four different full-scale anaerobic digesters treating food waste-recycling wastewater
SCIE
SCOPUS
- Title
- Temporal variation in methanogen communities of four different full-scale anaerobic digesters treating food waste-recycling wastewater
- Authors
- Lee, J; Hwang, B; Koo, T; Shin, SG; Kim, W; Hwang, S
- Date Issued
- 2014-09
- Publisher
- ELSEVIER SCI LTD
- Abstract
- Methanogen communities were investigated using 454 pyrosequencing in four different full-scale anaerobic digesters treating food waste-recycling wastewater. Seasonal samples were collected for 2 years, and 24 samples were available for microbial analysis from a plug flow thermophilic (PT) digester, a continuously- stirred tank thermophilic (CT) digester, an upflow anerobic sludge blanket mesophilic (UM) digester, and a continuously-stirred tank mesophilic (CM) digester. Methanoculleus, Methanobacterium, Methanothermobacter, and Methanosaeta were revealed to be key methanogens in full-scale anaerobic digestion process treating food waste-recycling wastewater. In the PT digester, Methanoculleus was dominant (96.8%). In the CT digester, Methanoculleus was dominant (95.4%) during the first year of operation, but the dominant genus was shifted to Methanothermobacter (98.5%) due to pH increase. In the UM digester, Methanosaeta was dominant (87.2%). In the CM digester, Methanoculleus was constantly dominant (74.8%) except during CM5 when Methanosaeta was dominant (62.6%) due to the low residual acetate concentration (0.1 g/L). (C) 2014 Elsevier Ltd. All rights reserved.
- Keywords
- Food waste-recycling wastewater; Anaerobic digestion; 454 pyrosequencing; Methanogen community; Full-scale; DIVERSITY; AMMONIA
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13986
- DOI
- 10.1016/J.BIORTECH.2014.03.161
- ISSN
- 0960-8524
- Article Type
- Article
- Citation
- BIORESOURCE TECHNOLOGY, vol. 168, page. 59 - 63, 2014-09
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