TY - JOUR
T1 - Electricity generation from model organic wastewater in a cassette-electrode microbial fuel cell
AU - Shimoyama, Takefumi
AU - Komukai, Shoko
AU - Yamazawa, Akira
AU - Ueno, Yoshiyuki
AU - Logan, Bruce E.
AU - Watanabe, Kazuya
N1 - Funding Information:
Acknowledgments We thank Hajime Unno, Tokuji Ikeda, Masaharu Ishii, and Shun’ichi Ishii for valuable discussion and Fusako Numazaki for technical assistance. This work was supported by the New Energy and Industrial Technology Development Organization (NEDO) of Japan and by the Paul L. Busch Award to BEL.
PY - 2008/8
Y1 - 2008/8
N2 - A new highly scalable microbial fuel cell (MFC) design, consisting of a series of cassette electrodes (CE), was examined for increasing power production from organic matter in wastewater. Each CE chamber was composed of a box-shaped flat cathode (two air cathodes on both sides) sandwiched in between two proton-exchange membranes and two graphite-felt anodes. Due to the simple design of the CE-MFC, multiple cassettes can be combined to form a single unit and inserted into a tank to treat wastewater. A 12-chamber CE-MFC was tested using a synthetic wastewater containing starch, peptone, and fish extract. Stable performance was obtained after 15 days of operation in fed-batch mode, with an organic removal efficiency of 95% at an organic loading rate of 2.9 kg chemical oxygen demand (COD) per cubic meter per day and an efficiency of 93% at 5.8 kg COD per cubic meter per day. Power production was stable during this period, reaching maximum power densities of 129 W m-3 (anode volume) and 899 mW m-2 (anode projected area). The internal resistance of CE-MFC decreased from 2.9 (day 4) to 0.64 Ω (day 25). These results demonstrate the usefulness of the CE-MFC design for energy production and organic wastewater treatment.
AB - A new highly scalable microbial fuel cell (MFC) design, consisting of a series of cassette electrodes (CE), was examined for increasing power production from organic matter in wastewater. Each CE chamber was composed of a box-shaped flat cathode (two air cathodes on both sides) sandwiched in between two proton-exchange membranes and two graphite-felt anodes. Due to the simple design of the CE-MFC, multiple cassettes can be combined to form a single unit and inserted into a tank to treat wastewater. A 12-chamber CE-MFC was tested using a synthetic wastewater containing starch, peptone, and fish extract. Stable performance was obtained after 15 days of operation in fed-batch mode, with an organic removal efficiency of 95% at an organic loading rate of 2.9 kg chemical oxygen demand (COD) per cubic meter per day and an efficiency of 93% at 5.8 kg COD per cubic meter per day. Power production was stable during this period, reaching maximum power densities of 129 W m-3 (anode volume) and 899 mW m-2 (anode projected area). The internal resistance of CE-MFC decreased from 2.9 (day 4) to 0.64 Ω (day 25). These results demonstrate the usefulness of the CE-MFC design for energy production and organic wastewater treatment.
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U2 - 10.1007/s00253-008-1516-0
DO - 10.1007/s00253-008-1516-0
M3 - Article
C2 - 18581110
AN - SCOPUS:48349128043
SN - 0175-7598
VL - 80
SP - 325
EP - 330
JO - Applied Microbiology and Biotechnology
JF - Applied Microbiology and Biotechnology
IS - 2
ER -