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化工进展  2015 

电极对微生物燃料电池同时处理有机废水和含铜重金属废水产电性能的影响

DOI: 10.16085/j.issn.1000-6613.2015.04.044

Keywords: 微生物燃料电池,电极材料,电极距离,电极表面积,产电性能,废水处理

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Abstract:

实验以有机废水为阳极底物,以活性污泥中的混合菌为阳极接种微生物,以含铜废水为阴极液,构建双室MFC,探讨电极对MFC同时处理有机废水和含铜重金属废水产电性能的影响.结果表明MFC对阳极有机废水COD的去除率最高为79.1%,对阴极液中Cu2+的去除率最高为95.6%.活性炭/石墨棒电极MFC产电性能最优,开路电压最高为800mV,是石墨棒电极MFC的1.25倍,是活性炭/碳纸电极MFC的1.3倍,是碳纸电极MFC的1.5倍.当电极距离为2cm时,MFC开路电压580mV,内阻为181Ω,产电性能最优.电极表面积为75cm2时,MFC的开路电压470mV,是电极表面积为50cm2的MFC的1.1倍,是电极表面积为30cm2的MFC的2.1倍.当AAn/Acat=0.4时MFC产能最佳,MFC的开路电压最高为600mV,最大功率密度48.2mW/m2.

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