期刊
CHEMICAL ENGINEERING JOURNAL
卷 332, 期 -, 页码 647-657出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2017.09.114
关键词
Microbial consortia; Microbial fuel cell; 2,4-Dichlorophenol; Arcobacter; Bacillus; Cloacibacterium
Microbial fuel cell (MFC) and its reactor systems have been intensively investigated for energy production and wastewater treatment using wild bacterial consortia. Yet, there is lack of detailed studies on understanding how multiple wild microorganisms could alter bioelectrochemical reactions in MFC for degrading toxic organic contaminants and generating electricity from industrial wastewater. Hence, this study evaluates the microbial community and bioelectrochemical activities in a lab-scale MFC reactor inoculated by petrochemical industrial microbial consortium (IMC) and domestic microbial consortium (DMC), aiming to enhance MFC performance for degrading 2,4-dichlorophenol (2,4-DCP) and producing electricity. Cutting-edge microbiology analysis techniques were used for identifying microbial community in suspension and biofilm in the IMC and DMC inoculated MFC systems. Research focused on evaluating how the variable microbial population and 2,4-DCP feeding could affect bioelectrochemical activities and MFC performance. Arcobacter, Aeromonas, Pseudomonas, Acinetobacter, Cloacibacterium, and Shewanella sp. in DMC were found to be important bacteria for 2,4-DCP degradation while Bacillus sp. dominated IMC contributing to higher electricity production. This would be the first discovery of Cloacibacterium sp. contributing phenol degradation in MFC. IMC-MFC reactor performed well in producing high 156 mA/m(2) current density with 41% phenolic degradation, while DMC-MFC showed promising 62% 2,4-DCP reduction and 123 mA/m(2) current production. MFC systems performed highly comparable 2,4-DCP degradation efficiency than the conventional anaerobic biodegradation. These results demonstrate that wastewater-inoculated MFCs can be capable of simultaneous energy generation and phenolic degradation and provide new insights that may assist with future MFC optimisation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据