铜离子为电子受体的MFC产电性能及废水处理

Electricity generating capability of microbial fuel cells with copper ions as electron acceptor and wastewater treatment

以经过预处理的厌氧活性污泥为阳极菌种,模拟有机废水为阳极底物,人工模拟含铜废水为阴极液,构建双室MFC反应器,考察以铜离子为阴极电子受体条件下的MFC产电性能与废水处理效果。结果表明:阴极液为5 g/L的硫酸铜溶液时,最大开路电压为0.531 V,最大功率密度为49.6 mW/m^2,内阻为326Ω。通过改变阴极液浓度、电极材料等条件进一步提高其产电性能,当阴极液硫酸铜质量浓度为3 g/L、电极材料为石墨棒、导线为钛丝时,产电性能最优,最大功率密度为75.7 mW/m^2,Cu^(2+)去除率为91.9%。

Using pre-treated anaerobic activated sludge as anode strains,simulated organic wastewater as cathode substrates,and artificially simulated copper-containing wastewater as catholyte,the double-chamber microbial fuel cells（MFCs）has been constructed,and the electricity generating capability and wastewater treatment effect of MFCs under the conditions of using copper ions as cathode electrode acceptor investigated.The results show that when the catholyte is 5 g/L of copper sulfate solution,the maximum open-circuit voltage is 0.531 V,maximum power density 49.6 mW/m^2,and its internal resistance 326 Ω.Its electricity generating capability can be further improved by changing the conditions,such as catholyte concentration,electrode materials,etc.When the mass concentration of catholyte copper sulfate is 3 g/L,cathode material is graphide rod and the conductor material is titanium wire,the electricity generating capability is the best,the maximum power density is 75.7 mW/m^2,and Cu^2＋ removing rate 91.9%.