处理过的老龄垃圾渗滤液为阴极液的微生物燃料电池性能研究

RESEARCH OF MICROBIAL FUEL CELL’S PERFORMANCE WITH TREATED-AGING LANDFILL LEACHATE AS CATHOLYTE

处理过的老龄垃圾渗滤液与好氧污泥悬浊液的混合液按不同体积配比（0％、25％、50％、75％和100％），作为阴极液，构建生物阴极型微生物燃料电池（MFC），研究其产电特征以及对阳极底物和阴极液中污染物的处理效果。结果表明，处理过的老龄垃圾渗滤液作为阴极液时，MFC对化学需氧量（COD）和氨氮的去除率较其作为阳极液时分别提高2.27倍和42％。处理过的老龄垃圾渗滤液与好氧活性污泥悬浊液的混合液作为阴极液可提高MFC的产电性能和对污染物的去除效果。以体积比为75％的处理过的老龄垃圾渗滤液作为阴极液时，能显著提高MFC产电效果，输出电压和输出功率密度最大，分别为498mV、295．2mW／m^3，内阻最小为244Ω，阳极COD去除率最高为44．81％。

Bio-cathode microbial fuel cells （MFCs） using the mixture of different volume ratios （0%, 25%, 50%, 75%, 100% ） treated-aging landfill leachate and aerobic sludge suspension as catholyte were constructed to investigate their electricity production and treatment performance. The results showed that the removal rates of chemical oxygen demand （COD） and ammonia improve respectively 2.27 times and 42% when the volume fraction of treated-aging leachate in catholyte is 100%, compared with the MFC which treated-aging leachate as anolyte. The performance of MFCs with the mixture of aerobic sludge and treated-aging landfill leachate as catholyte are significantly improved in power generation and contamination removal, especially the MFC of 75% treated-aging leachate. The maximum voltage and power density are respectively 498 mV and 295.2 mW/m^3, respectively. The minimum internal resistance is 244 -, and the COD removal of anode is 44.81%.