caa a22 4500 606212337 CHVBK 20210128101042.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s10295-015-1629-2 doi (NATIONALLICENCE)springer-10.1007/s10295-015-1629-2 Electron flux and microbial community in microbial fuel cells (open-circuit and closed-circuit modes) and fermentation [Elektronische Daten] [Jaecheul Yu, Youghyun Park, Taeho Lee] A closed-circuit microbial fuel cell (C-MFC) was operated to investigate the electron flux under fed-batch mode, and the results were compared to those of open-circuit MFC (O-MFC) and a fermentation reactor (F-reactor). The current was the largest electron sink (52.7% of influent SCOD) in C-MFC, whereas biomass and methane gas were the most significant electron sinks in O-MFC and F-reactor. Interestingly, some of the unknown sink may have accumulated in the electrode of O-MFC. Principal component analysis based on gradient gel electrophoresis profiles showed that the microbial communities were significantly affected by the growth conditions and the presence of electrode, regardless of the circuit connection. Therefore, the electrode and circuit mode might help to control the amount of biomass and enhance the MFC performance. Society for Industrial Microbiology and Biotechnology, 2015 Closed-circuit nationallicence Electron flux nationallicence Fermentation nationallicence Microbial community nationallicence Open-circuit nationallicence Yu Jaecheul Department of Energy Environmental Engineering, Silla University, 617-736, Busan, Republic of Korea aut Park Youghyun Department of Environmental Engineering, Pusan National University, 609-735, Busan, Republic of Korea aut Lee Taeho Department of Environmental Engineering, Pusan National University, 609-735, Busan, Republic of Korea aut Journal of Industrial Microbiology & Biotechnology Springer Berlin Heidelberg 42/7(2015-07-01), 979-983 1367-5435 42:7<979 2015 42 10295 https://doi.org/10.1007/s10295-015-1629-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10295-015-1629-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Yu Jaecheul Department of Energy Environmental Engineering, Silla University, 617-736, Busan, Republic of Korea aut NATIONALLICENCE 700 1- Park Youghyun Department of Environmental Engineering, Pusan National University, 609-735, Busan, Republic of Korea aut NATIONALLICENCE 700 1- Lee Taeho Department of Environmental Engineering, Pusan National University, 609-735, Busan, Republic of Korea aut NATIONALLICENCE 773 0- Journal of Industrial Microbiology & Biotechnology Springer Berlin Heidelberg 42/7(2015-07-01), 979-983 1367-5435 42:7<979 2015 42 10295