微生物燃料电池处理生活污水的试验研究

Research on Treatment of Domestic Wastewater with Microbial Fuel Cells

该文使用单室空气阴极微生物电池,以电压、电流密度、功率密度、COD去除率、pH值等为试验指标,分别使用铂、四氧化三铁、二氧化锰作为阴极,对比其处理生活污水的去除效率和产电能力。实验结果表明,铂阴极的产电能力和处理废水效果最好,开路电压最大值达到了558.642 9 mV。当电流密度为0.604 A/m^2时功率密度达到最大值0.18 W/m^2,COD去除率为89.3%;四氧化三铁阴极MFC效果次之,二氧化锰阴极MFC效果最低。

In this study, single-chamber air cathode MFC was applied to treating sewage. With Pt, Fe_3O_4 or MnO_2 as the cathode, the voltage, current density, power density, COD removal rate and pH were monitored to investigate the performance of the MFC. Experimental results showed that the removal rate and production capacity of MFC with Pt cathode was the highest, and the maximum open circuit voltage was 558.642 9 m V. When current density was 0.604 A/m^2, power density reached its maximum as 0.18 W/m^2, and the removal rate of COD was 89.3%. Fe_3O_4-MFC exhibited the second best performance, followed by MnO_2-MFC.