| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
The anodic bacterial community structures in rice paddy-field microbial fuel cells (RPF-MFCs）were investigated by PCR-DGGE analysis and the band related to the exoelectrogenic genus Rhizomicrobium was detected. Moreover, exoelectrogens affiliated with the Clostridia were isolated from the anode biofilm, indicating extensive diversity of the anodic exoelectorogens.
Different types of fertilizers exerted different effects on the electricity output of the RPF-MFC and the application of composted cattle manure might decrease the electrocity output. The results of a series of inhibition experiments on methanogenesis and sulfate reduction suggested that methanogenesis compete with electrogenesis and sulfate reduction contribute to electrogenesis. Add to the above inhibition experiments, we also performed pot experiments for studying the effects of electricity generation on methane emission from paddy soil. The results suggested that the methane emission could be reduced by using the RPF-MFC.
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