| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
In the present study, we carried out pot experiments to investigate the effect of electricity generation in a paddy-field microbial fuel cell (PF-MFC) on methane production and methane emission from flooded paddy soil. The installation of electrodes in the pots increased the methane emission from the paddy soils. Structure of prokaryotic communities developed on the anodes installed into the paddy soils was different from that in the paddy soil. The ratio of the genus Geobacter in the community on the anode under closed-circuit operation was higher than that in the soil and that on the anode under open-circuit operation. Power generation was heavily influenced by the plant species planted in the pots. Exoelectrogenic bacteria isolated from the anode had different electromotive force for each strain. As stated above, the present study provided the information to understand the effects of PF-MFC on the paddy field ecosystem.
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