中文摘要：

尿液是市政污水中氮、磷与COD的主要来源,将尿液从污水系统中分离单独处理可以缓解城市污水处理厂有机物、营养素的超负荷难题.以源分离的尿液为底物,研究微生物燃料电池的产电特征及其污染物去除效果,并进一步考察影响系统产电性能的因素.结果显示：在超过6个月的试验过程中,伴随有机物和总氮的减少,系统可保持长期稳定的功率输出.COD和总氮的最高去除率为92.9%和65.6%,系统最大输出功率为388.2 m W/m^2,这也是迄今尿液微生物燃料电池所获得的最高功率.阳极碳毡表面菌群分析显示具有电化学活性的Arcobacter和具有发酵功能的Bacteroides为优势菌群.氨氮积累、微生物淤积以及尿液中的物质沉淀等是影响尿液微生物燃料电池性能的主要因素.研究结果表明,尿液微生物燃料电池高效地实现了在污染物去除的同时获得高输出功率,体系中Arcobacter是一种新型的胞外产电菌,其强电化学作用可利用在生物电能的获得过程中.

英文摘要：

Human urine is the main source of nitrogen,phosphorus and COD in the municipal sewage.Separate treatment of urine from sewage system would alleviate the overload of organic matter and nutrients in urban wastewater treatment plants.This paper aims to study the characteristics of electricity production of urine microbial fuel cells and the removal efficiency of pollutants.The factors that affect system performance were also investigated.Electrochemical analysis,pollutant（COD,TN,and NH4^＋-N） concentration determination and high-throughput sequencing were used in the study.In more than six months,constant power generation from urine was obtained along with the decrease of organic matter and total nitrogen.The best removal efficiency of COD and TN was 92.9% and 65.6% respectively,and the maximum output power was 388.2 mW/m^2,the highest power so far generated with urine microbial fuel cells.Microbial community analysis showed the fermentative Bacteroides and exoelectrogenic Arcobacter were the dominant bacteria attaching on the anode carbon felt.The accumulation of ammonia nitrogen,biofouling and precipitation were the main factors influencing the performance of urine microbial fuel cells.These results showed that human urine can power microbial fuel cells to remove pollutants and generate electricity simultaneously.The new extracellular electro gene sis bacterium Arcobacter can be used in the process of biological energy acquisition for its high electrochemical activity.