微生物燃料电池型人工湿地去除抗生素的效能研究  

Study on antibiotics removal by microbial fuel cell coupled constructed wetland

作　　者：李骅[1] 杨小丽[2] 宋海亮[1] 张帅[1] 陈桐清 张昱悦 杨可昀 Li Hua Yang Xiaoli Song Hailiang Zhang Shuai Chen Tongqing Zhang Yuyue Yang Keyun(School of Energy and Environment, Southeast University, Nanjing 210096, China School of Civil Engineering, Southeast University, Nanjing 210096, China)

机构地区：[1]东南大学能源与环境学院,南京210096 [2]东南大学土木工程学院,南京210096

出　　处：《东南大学学报（自然科学版）》2017年第2期410-415,共6页Journal of Southeast University：Natural Science Edition

基　　金：国家自然科学基金资助项目(41571476);江苏省自然科学基金资助项目(BK20141117);江苏省重点研发计划资助项目(BE2015358)

摘　　要：考察了微生物燃料电池型人工湿地(MFC-CW)系统对不同浓度抗生素的去除效果和产电特性,以及不同共基质浓度对去除抗生素和产电的影响.结果表明,系统对磺胺甲恶唑(SMX)和四环素(TC)的去除分别以微生物降解和吸附为主.四环素具有较强的极性,进入系统后能够立即被填料稳定吸附.磺胺甲恶唑易随水流动,更容易被微生物降解.进水抗生素浓度越高,出水浓度越高,系统开路电压越低.同时,进水共基质浓度也影响MFC-CW对抗生素的去除效率和产电能力.随着系统共基质浓度的增加,系统开路电压和系统内阻逐渐增大,而系统库伦效率逐渐下降.由此表明进水抗生素浓度和共基质浓度都应控制在一定范围内,才能使系统在产电、抗生素降解方面达到优化平衡.Varying concentrations of antibiotic and cosubstrates in influent were conducted to test the antibiotic removal efficiency and the microbial fuel cell（ MFC） performance. The results showthat the mechanisms of microbial fuel cellconstructed wetland（ MFC-CW） to remove sulfamethoxazole（ SMX） and tetracycline（ TC） are mainly adsorption and microbial degradation,respectively. The tetracycline has a strong polarity,thus it can be absorbed immediately and stably after entering the system. Sulfamethoxazole is easier to flowwith water and can easily microbial degradation. The higher concentration of antibiotic in influent is observed and detected in the effluent corresponding to the decrease of the system open circuit voltage. Meanwhile,the ability of the system on removing antibiotics is depending on the co-substrate concentration for altering performance of the system.With the increase of the co-substrate concentration,the open circuit voltage and internal resistance increase,while the coulombic efficiency of system gradually declines. Further analysis shows that when concentrations of antibiotic and cosubstrates are controlled within a certain range,the system can achieve the optimum balance in the electricity generation and the degradation of antibiotics.

关 键 词：微生物燃料电池型人工湿地(MFC-CW) 抗生素 共基质 降解 产电性能 

分 类 号：X703.5[环境科学与工程—环境工程]