Mineralization of 4-chlorophenol and analysis of bacterial community in microbial fuel cells

摘要：

　　4-Chlorophenol (4-CP) was co-metabolically degraded and mineralized with the presence of glucose in microbial fuel cells (MFCs),achieving a degradation rate of 0.58 ± 0.036 mg/L-h (7.2 ± 0.5 mg/g VSS-h) with an electricity generation of 5.4 ± 0.4 W/m3 at an initial 4-CP concentration of 25 mg/L.Compared to the open circuit controls,current generation accelerated the removal of 4-CP.Coulombic efficiency decreased from 30.3 ± 2.9% at an initial 4-CP concentration of 5 mg/L to 6.3 ± 0.9% at 40 mg/L.4-CP was degraded via the formation of phenol,which was further mineralized.Dominant bacteria most similar to both the exoelectrogenic and electrotrophic uncultured Desulfovibrio,the exoelectrogenic and recalcitrant degrader of uncultured Desulfobulbus,and the exoelectrogenic uncultured Microbacterium were identified in the biofilms.These results demonstrate that 4-CP mineralization using MFCs may be a promising process for remediation of water contaminated with 4-CP as well as for power generation.

关键词： 4-chlorophenol mineralization bacterial community microbial fuel cell

作者: Liping Huang Yuliang Sun Yaxuan Liu Ning Wang

作者单位: Key Laboratory of lndustrial Ecology and Environmental Engineering(MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China

会议类型: 国际会议

会议名称: 2013 International Symposium on Environmental Science and Technology(2013环境科学与技术国际会议)

会议地点: 大连

会议语种:英文

页码: 429-433

在线出版日期: 2013-06-04（万方平台首次上网日期，不代表论文的发表时间）