Abstract:

The simple non-membrane single-chamber microbial fuel cell(MFC),which uses non-carbon-sourcedepended azo dye degrading bacteria as inoculants,has tentatively been developed. The characteristics of electricity generation and decolorization effect of MFC under different operation conditions are studied. The results show that the decolorization rate of MFC for 1-phenylazo-2-naphthol-6,8-disulfonic acid disodium(orange G) is better than the decoloration rate of pure bacteria. Within 12 hrs,the decolorization rate can be as high as 65.1%,COD removing rate as high as 82%,and its highest output power is 1.28 mW/m²,when MFC runs steadily. Although the output power level is rather low,when the MFC which uses non-caron-source-depended azo dye degrading bacteria as inoculants,is used for the treatment of wastewater containing azo dyes,it does not need any extra carbon source. Furthermore,its decolorization rate is accelerated. Therefore,it has certain application value.

Key words: microbial fuel cell, azo dyes, decolorization, characteristic of electricity generation, orange G

摘要：

尝试构建了以非碳源依赖性偶氮染料降解菌为接种物的简易无膜单室微生物燃料电池(MFC),并对不同运行条件下微生物燃料电池的产电特性和脱色效果进行了研究。结果表明该MFC对1-苯基偶氮-2-萘酚-6,8-二磺酸钠(橙黄G)的脱色速率优于单纯细菌脱色速率,12 h内的脱色率最高可达65.1%,COD去除率最高可达82%,MFC稳定运行时的最大输出功率为1.28 mW/m²。虽然非碳源依赖性偶氮染料降解菌为接种物的MFC处理偶氮染料废水时电能输出水平较低,但无需额外碳源,且加快了脱色速率,有一定应用价值。

关键词: 微生物燃料电池, 偶氮染料, 脱色, 产电特性, 橙黄G

CLC Number: 

• X703.1