ENRICHMENT OF AN ELECTROCHEMICALLY ACTIVE BACTERIAL COMMUNITY USING MIRCROBIAL FUEL CELL
Microbial fuel cell is a device capable of directly transforming chemical to electrical energy via electrochemical reactions involving biochemical pathways. In this research, sludge batter and two-compartment microbial fuel cell were used to enrich an electrochemically active microbial community from anaerobic digester sludge and feeding with glucose as fuel. In the enrichment process, the attached bacteria were scraped off and inoculated in a new microbial fuel cell. The power output and coulombic efficiency of the microbial fuel cell increased gradually to an order of magnitude as that of the original microbial fuel cell with the anaerobic digester sludge as inoculum. The attached bacterial can grow under anaerobic condition with MnO2 and glucose, and reduce Mn(Ⅳ) to Mn(Ⅱ). Control experiment showed that the MnO2 was the only electron acceptor of the microbes attached to the anode in the system and the microbes are capable of using MnO2 in their dissimilatory respiration since no microbe growth was observed without MnO2. Overall, electrochemically active microbial community belonging to dissimilatory metal reduction microorganism can be enriched using a microbial fuel cell. The enrichment procedure is also a new approach to enhance the performance of mediatorless microbial fuel cell.
Meng Tong Zhuwei Du Shaohua Li Haoran Li
National Key Laboratory of Biochemical Engineering Institute of Process Engineering, CAS Beijing 100 National Key Laboratory of Biochemical Engineering Institute of Process Engineering, CAS Beijing 100
国际会议
2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)
北京
英文
2007-09-18（万方平台首次上网日期，不代表论文的发表时间）