Key factors affecting microbial anode potential in a microbial electrolysis cell for H2 production

摘要：

In order to optimize operations of microbial electrolysis cell (MEC) for hydrogen production,microbial anode potential (MAP) was analyzed as a function of factors in biofilm anode system,including pH,substrate and applied voltage.In the study MAP reflected the information when any factor became limiting for hydrogen production,such as pH＜6.0 or acetate less than 50 mg·L~(-1).Hydrogen generation started around anode potential of-250 mV ～ -300 mV.Higher hydrogen rate were obtained when MAP went down to -400 mV or lower.Biofilm anode could work normally between pH 6.5～7.0,with lowest MAP between 6.8～7.0. Applied voltage did not affect MAP much during hydrogen production.Potential analysis also showed that planktonic bacteria in suspended solution contributed to enhance electron transfer by reducing internal resistance and lowering minimum voltage needed for hydrogen production to some extent .

关键词： microbial anode potential (MAP) microbial electrolysis cell (MEC) bio-hydrogen biofilm

作者: Aijie Wang Wenzong Liu Nanqi Ren Jizhong Zhou Shaoan Cheng Bruce E Logan

作者单位: State Key Lab of Urban Water Resource and Environment (SKLUWRE,HIT),Harbin 150090,P.R.China Institute for Environmental Genomics,Stephenson Research & Technology Center,University of Oklahoma, Department of Civil and Environmental Engineering,The Pennsylvania State University,Pennsylvania 168

会议类型: 国际会议

会议名称: 第二届中国微生物燃料电池研讨会(The 2nd Symposium on Microbial Fuel Cell in China)

会议地点: 北京

会议语种:英文

页码: 126-129

在线出版日期: 2009-11-13（万方平台首次上网日期，不代表论文的发表时间）