Evaluation on direct interspecies electron transfer in anaerobic sludge digestion of microbial electrolysis cell

摘要：

　　Increase of methanogenesis in methane-producing microbial electrolysis cells (MECs) is frequently believed as a result of cathodic reduction of CO2.Recent studies indicated that this electromethanogenesis only accounted for a little part of methane production during anaerobic sludge digestion.Instead,direct interspecies electron transfer (DIET) possibly plays an important role in methane production.In this study,the results showed that adding carbon felt into the reactor increased 12.9% of methane production and 17.2% of sludge reduction.Imposing a voltage on the carbon felt further improved the digestion.Current calculation showed that the cathodic reduction only contributed to 27.5% of increased methane production.Microbial analysis indicated that DIET played an important role in the anaerobic sludge digestion in the MEC.

作者: Zisheng Zhao Yaobin Zhang

作者单位: Key Laboratory of Industrial Ecology and Environmental Engineering, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, 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: 158-160

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）