Microbial fuel cells generating electricity from rhizodeposits of rice plants
Microbial fuel cells generating electricity from rhizodeposits of rice plants
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DOI：
10.1021/es071938w
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发表时间：
2008-04-15
影响因子：
11.4
通讯作者：
Verstraete, Willy
中科院分区：
文献类型：
--
作者：
de Schamphelaire, Liesje;van den Bossche, Leen;Verstraete, Willy
活的植物将大量的有机物质输送到土壤中。这一过程称为根际沉积，为根际微生物群落提供底物。在这项研究中，实验室规模的沉淀物微生物燃料电池，其阳极位于水稻植物的根际，用于微生物氧化植物来源的有机物。活体水稻植株的根部沉积物通过原位氧化产生电流。研究发现，在生长活跃的植物存在的情况下，沉淀物微生物燃料电池的电力输出要高出7倍。这一过程提供了从活的植物以非破坏性的方式进行光驱发电的潜力。可持续的电力生产高达330W ha(-1)可归因于植物衍生化合物的氧化。
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.