Construction of hydrogen fermentation from garbage slurry using the membrane free bioelectrochemical system(ENVIRONMENTAL BIOTECHNOLOGY)
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概要
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The aim of this study was to show the effectiveness of the membrane free bioelectrochemical system (BES) using three electrodes on inhibition of methanogenesis and construction of hydrogen fermentation from the artificial garbage slurry. The electrical redox-potential on the working electrode was adjusted to -1.0 V (vs. Ag/AgCl) that has positive effect on methanogenesis. The redox-potential on the counter electrode was measured to be 1.6 V. The pH in the effluents was 5.5-6.4. Hydrogen production rate at the cathode side was similar to that at the anode side and much higher than that calculated from current, and reached a maximum of 2445±815 (average±standard deviation) mL L^<-1> d^<-1> at an organic loading rate of 58.7 g dichromate chemical oxygen demand per L d^<-1>. Methane production was negligible throughout the experiment. Acetate and butyrate were the main products of the fermentation using a BES; these offered favorable conditions for hydrogen production. The bacterial community in the bioelectrochemical hydrogen fermentor differed from that in the methanogenic seed sludge and included hitherto unknown species. These results show that high redox-potential on the anodic electrode and acidic pH in the membrane free BES can be utilized for hydrogen fermentation from the artificial garbage slurry by avoiding methanogenesis.
著者
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Ohmura Naoya
Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry (cri
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Sasaki Kengo
Environmental Sci. Res. Lab. Central Res. Inst. Of Electric Power Ind. (criepi) 1646 Abiko Abiko-shi
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Igarashi Yasuo
Department Of Biotechnology Graduate School Of Agricultural And Life Science The University Of Tokyo
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Hirano Shin-ichi
Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry (cri
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Igarashi Yasuo
Department Of Agricultural Chemistry The University Of Tokyo
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Sasaki Daisuke
Department Of Biotechnology Graduate School Of Agricultural And Life Sciences The University Of Toky
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Sasaki Daisuke
Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry (cri
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Matsumoto Norio
Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry (cri
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Sasaki Kengo
Biotechnology Sector, Environmental Science Research Laboratory, Central Research Institute of Elect
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Morita Masahiko
Biotechnology Sector, Environmental Science Research Laboratory, Central Research Institute of Elect
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Sasaki Daisuke
Biotechnology Sector, Environmental Science Research Laboratory, Central Research Institute of Elect
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Matsumoto Norio
Biotechnology Sector, Environmental Science Research Laboratory, Central Research Institute of Elect
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Hirano Shin-ichi
Biotechnology Sector Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry
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Ohmura Naoya
Biotechnology Sector Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry
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Morita Masahiko
Biotechnology Sector Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry
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Sasaki Daisuke
Biotechnology Sector Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry
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Matsumoto Norio
Biotechnology Sector Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry
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Sasaki Kengo
Biotechnology Sector Environmental Science Research Laboratory Central Research Institute Of Electric Power Industry:(present Office)department Of Biotechnology Graduate School Of Agricultural And Life Sciences The University Of Tokyo
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