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Microbial Fuel Cells Generating Electricity from Rhizodeposits of Rice Plants

机译:水稻植株根际微生物产生的微生物燃料电池

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摘要

Living plants transport substantial amounts of organic material into the soil. This process, called rhizodeposition, provides the substrate for the rhizospheric microbial community. In this study, a laboratory-scale sediment microbial fuel cell, of which the anode is positioned in the rhizosphere of the rice plants, is used to microbially oxidize the plant-derived organics. An electrical current was generated through the in situ oxidation of rhizodeposits from living rice plants. The electrical power output of a sediment microbial fuel cell was found to be a factor 7 higher in the presence of actively growing plants. This process offers the potential of light-driven power generation from living plants in a nondestructive way. Sustainable power productions up to 330 W ha~(-1) could be attributed to the oxidation of the plant-derived compounds.
机译:有生命的植物将大量的有机物质输送到土壤中。此过程称为根基沉积,为根际微生物群落提供了底物。在这项研究中,实验室规模的沉积物微生物燃料电池(其阳极位于水稻植物的根际中)被用于微生物氧化植物衍生的有机物。通过从活稻植物中根状茎原位氧化产生电流。发现存在活跃植物的情况下,沉积物微生物燃料电池的电力输出高出7倍。该过程提供了以无损方式从活植物产生光驱动发电的潜力。高达330 W ha〜(-1)的可持续发电量可归因于植物衍生化合物的氧化。

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