Effect of CO on Hydrogenotrophic Methanogenesis: Biomethanation performance and Microbial Ecology

摘要：

　　In this study,the effect of CO on biomethanation process performance and microbial community structure of enriched hydrogenetrophic mixed-culture was investigated in ex-situ system under thermophilic (55℃) and extreme-thermphilic conditions (70℃).Results showed that the addition of 5% CO had a positive effect on methane production,with 18.3% and 18.5% increase in average CH4 productions than those of the control groups under 55℃ and 70℃,respectively.The specific methanogenic activity of the enriched culture in reactors with 5% CO injected were nearly 200% and 50% higher than that of the control group under 55℃ and 70℃,respectively.Microbial community analysis results also indicated that the addition of 5% CO increased the relative abundance of hydrogenotrophic methanogens and Coprothermobacte,which could enhance the syntrophic associations of hydrogenotrophic archaea with Coprothermobacte and thus promote the biomethanation process.

关键词： Biogas upgrading hydrogenotrophic methanogenesis carbon monoxide microbial ecology

作者: Fan Bu Nanshi Dong Li Xie Qi Zhou

作者单位: State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, 1239 Siping Road, Shanghai 200092, PR China

会议类型: 国际会议

会议名称: The 15th IWA World Conference on Anaerobic Digestion( 第15届IWA世界厌氧大会)

会议地点: 北京

会议语种:英文

页码: 740-743

在线出版日期: 2017-10-17（万方平台首次上网日期，不代表论文的发表时间）