Temporal variation in methanogen communities of four different full-scale anaerobic digesters treating food waste-recycling wastewater

Lee, J., Hwang, B., Koo, T., Shin, S. G., Kim, W. and Hwang, S. (2014) Temporal variation in methanogen communities of four different full-scale anaerobic digesters treating food waste-recycling wastewater. Bioresource Technology, 168, pp. 59-63. (doi: 10.1016/j.biortech.2014.03.161) (PMID:24767792)

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).

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Shin, Dr Seung Gu
• Authors: Lee, J., Hwang, B., Koo, T., Shin, S. G., Kim, W., and Hwang, S.
• College/School: College of Science and Engineering > School of Engineering > Infrastructure and Environment
• Journal Name: Bioresource Technology
• Publisher: Elsevier
• ISSN: 0960-8524
• ISSN (Online): 1873-2976