METHOD AND DEVICE FOR MICROBIAL ELECTRIC GENERATION

PROBLEM TO BE SOLVED: To improve power generation efficiency of a device for microbial electricity-generation by a simple and inexpensive means. SOLUTION: Two plate-like cation exchange membranes 31, 31 are disposed parallel to each other inside a tank 30. Thereby, a negative electrode chamber 32 is formed between the mutual cation exchange membranes 31, 31, and two positive electrode chambers 33, 33 are formed respectively and adjoiningly to the negative electrode chamber 32 via the respective cation exchange membranes 31, 31. An oxygen containing gas is circulated to the positive electrode chambers 33, 33 and a negative electrode solution L is supplied to the negative electrode 32 chamber to preferably circulate the negative electrode solution. Organic substance containing water such as sewage is used as the negative electrode solution, microbes are removed by applying coagulating sedimentation treatment to the organic substance containing water to reduce the amount of foreign microbes flowing into the negative electrode chamber, and thereby, the microbes for power generation are augmented to improve power generation efficiency. COPYRIGHT: (C)2010,JPO&INPIT