MFC 技术处理铜、银重金属废水的研究

将具有氧化性的有机废水池作为电池的阳极，具有还原性的重金属废水池作为电池的阴极，利用微生物燃料电池（ MFC）同时处理有机废水和重金属废水．结果表明，利用铜离子溶液作阴极， MFC最大电压可达到0．277 V，最大功率密度为33．49 mW/m2，COD的去除率为31．6％，铜的去除率可达42％；利用银离子溶液作阴极，MFC最大电压可达到0．311 V，最大功率密度为42．21 mW/m2， COD的去除率为64．6％，银的去除率可达78％．即不管是从产电角度还是从废水处理角度考虑，都是以银离子废水作阴极优于铜离子．

Study on microbial fuel cell for treating heavy metal wastewater of copper and silver

Microbial fuel cell （ MFC） can be used to treat organic wastewater and heavy met-al wastewater simultaneously , with the oxidation of organic wastewater as anode , while with reduction of heavy metals waste water as cathode .The results showed that with copper ion solution as the cathode , the maximum voltage of MFC was up to 0.277 V, and the maximum power density reached to 33.49 mW/m2 .The removal rate of COD was 31.6%, and the re-moval rate of copper reached to 42%.With silver ion solution as the cathode , the maximum voltage of MFC was up to 0.311V.The maximum power density was 42.21 mW/m2 .The re-moval rate of COD and silver increased to 64 .6%and 78%, respectively .It was shown that copper ion was better than silver ion neither in the field of producing electricity nor the wastewater treatment .