微生物燃料电池不同阳极底物产电性能研究

Electricity Generation Performance of Microbial Fuel Cells with Different Anode Substrate

通过比较相同COD浓度下3种不同阳极底物:象草秸秆水解液、葡萄糖模拟废水、葡萄糖与象草秸秆水解产物共基质溶液,研究不同阳极底物对MFC的产电电压、产电时间、功率密度、内阻、库伦效率及底物的COD去除率的影响。研究发现,葡萄糖和象草秸秆水解产物共基质溶液作为MFC阳极底物时可获得较高电压,且稳定产电的时间较长;获得的最大功率密度为380.63mW/m^2;具有最小的内阻155.97Ω;库伦效率为22.64%;底物的COD去除率为83.2%,可作为MFC阳极底物。

Through the comparison of three different anode substrates（grassiness straw hydrolysate,glucose simulated wastewater, Co-substrate solution of glucose and grassiness straw hydrolysate）withthe same COD concentration, the writer studied the effects of different anode substrates to electricity gen-eration voltage, electricity generation time, power density, internal resistance, coulombic efficiency andsubstrate COD removal rate of MFC. The results showed that the Co-substrate solution of glucose andgrassiness straw hydrolysate as MFC anode substrate could obtain higher voltage and stable electricitygeneration over a long period of time; the maximum power density was 380. 63 mW/m^2; it had the lowestresistance of 155. 97 Ω; the coulombic efficiency was 22. 64%; the substrate removal rate of COD was 83. 2%, the Co-substrate solution can be used as MFC anode substrate.