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Electricity Generation and Microbial Community variation in Microbial Fuel Cell with various Electrode Combinations.  

Kwon, Jae-Hyeong (Department of Civil and Environmental Engineering, Pusan National University)
Choi, Soo-Jung (Department of Civil and Environmental Engineering, Pusan National University)
Cha, Jae-Hwan (Department of Civil and Environmental Engineering, Pusan National University)
Kim, Hyo-Soo (Department of Civil and Environmental Engineering, Pusan National University)
Kim, Ye-Jin (Department of Civil and Environmental Engineering, Pusan National University)
Yu, Jae-Cheul (Department of Civil and Environmental Engineering, Pusan National University)
Kim, Chan-Won (Department of Civil and Environmental Engineering, Pusan National University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.32, no.1, 2010 , pp. 87-96 More about this Journal
Abstract
The electrode material is one of the factors affecting the power production of microbial fuel cell. In this study, effects of carbon electrode material, thickness and configuration on the power density, biofilm formation and microbial community diversity of microbial fuel cell were investigated. To optimize the anode-cathode electrode assembly, seven lab-scale reactors which had various carbon electrode constructions were operated in continuous mode. Under the steady state condition, the electrode combination of graphite felt (6 mm) with hole showed the highest cell voltage of 238 mV and the coulombic efficiency of 37%. As a result of SEM analysis, the bacteria growing on surface of knitted type of carbon cloth and graphite felt electrode ncreased significantly. The change of dominant species between seeding sludge and biofilm on the surface of anode electrode, microbial analysis with PCR-DGGE showed that the dominant species of seeding sludge are quite different from those of biofilm on the surface of each anode electrode. Especially Geobacter sp., a well known electrochemical bacteria, was found as the dominant species of the electrode combination with graphite felt.
Keywords
Microbial fuel cell; Carbon electrode; Electricity production; Microbial-analysis;
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Times Cited By KSCI : 1  (Citation Analysis)
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