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Variation of the microbial community in thermophilic anaerobic digestion of pig manure mixed with different ratios of rice straw

文献类型： 外文期刊

作者： Zhou, Sheng 1 ; Nikolausz, Marcell 2 ; Zhang, Jining 1 ; Riya, Shohei 3 ; Terada, Akihiko 3 ; Hosomi, Masaaki 3 ;

作者机构： 1.Shanghai Acad Agr Sci, Ecoenvironm Protect Res Inst, 1000 Jinqi Rd, Shanghai 201403, Peoples R China

2.UFZ Helmholtz Ctr Environm Res, Dept Environm Microbiol, Permoserstr 15, D-04318 Leipzig, Germany

3.Tokyo Univ Agr & Technol, Inst Engn, 2-24-16 Naka Cho, Koganei, Tokyo 1848588, Japan

关键词： Ammonia;Bacterial community;Thermophilic;Hydrogenotrophic methanogen;Terminal restriction fragment-length polymorphisms

期刊名称：JOURNAL OF BIOSCIENCE AND BIOENGINEERING （ 影响因子：2.894； 五年影响因子：2.746 ）

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收录情况： SCI

摘要： The effect of pig manure mixed with rice straw on methane yield and the microbial community involved in a thermophilic (55 degrees C) anaerobic digestion process was investigated. Three substrates composed of mixed pig manure and rice straw at different ratios (95:5; 78:22 and 65:35 w/w, which resulted in C/N ratios of 10:1, 20:1 and 30:1) were used for the experiment. The substrate type had a major influence on the total bacterial community, while the methanogens were less affected. The members of the class Clostridia (phylum Firmicutes) were predominant regardless of mixture ratio (C/N ratio), but at species level there was a major difference between the low and high C/N ratio samples. The hydrogenotrophic methanogenic genus of Methanothermobacter was predominant in all samples but higher C/N ratio sequences affiliated to the genus Methanosarcina were also detected. The appearance of Methanosarcina sp. is most likely due to the less inhibition of ammonia during the anaerobic digestion. (C) 2016, The Society for Biotechnology, Japan. All rights reserved.

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