高锰酸钾对牛粪微生物燃料电池长期产电性能的影响  

Effects of potassium permanganate on electricity generation of cattle manure microbial fuel cell with a long-term operation

作　　者：沈建国[1] 胡春光[1] 辛言君[1] 王成显 张新旺 丁宁 SHEN Jian-guo1, HU Chun-guang1, XIN Yan-jun1, WANG Cheng-xian1n2, ZHANG Xin-wang1, DING Ning1(1.Qingdao Engineering Research Center for Rural Environment, College of Resources and Environment, Qingdao Agricultural University, Qingdao 266109, China; 2.School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201400, China)

机构地区：[1]青岛农业大学资源与环境学院,青岛农村环境工程研究中心,山东青岛266109 [2]上海应用技术大学化学与环境工程学院,上海201400

出　　处：《中国环境科学》2018年第5期1712-1718,共7页China Environmental Science

基　　金：国家自然科学基金资助项目(51478490,51408350)

摘　　要：为探讨KMn O_4用作阴极电子受体对牛粪长期发酵产电性能的影响,构建了以牛粪为主要底物的双室微生物燃料电池(Microbial fuel cell,MFC),考察了50,200,800mg/L KMn O_4时牛粪MFC开路电势、输出电压、功率密度、有机底物变化及降解情况.结果表明:当KMn O_4为800mg/L(MFC-800)时产生的开路电势和输出电压最高,分别达到1148m V和234m V,最大功率密度达177m W/m^3,库伦效率和净产能最大,分别为18%和19.5MJ/t;电池运行203d后,MFC-800的COD去除率最高,达68.1%;在电池运行过程中,MFC-800的VFA浓度增加了3.5倍,达388mmol/L;p H值从7.25下降到5.71下降了1.54;产电结束后,阳极发酵固态剩余物的成分符合《有机肥料》(NY525-2012)标准,可用于有机肥料生产.In order to investigate the effects of KMn O_4 as the electron acceptor on the electricity generation of cattle manure fermentation with a long-term operation,the dual-chamber microbial fuel cell（MFC）was designed with cattle manure as main substrate,and the effects of KMn O_4（50,200,800mg/L）on electricity generation were analyzed.During MFCs operation,the variation of parameters such as open-circuit potential,external voltage,power density,coulombic efficiency and net energy production were analyzed.Results showed that when the concentration of KMn O_4 was 800mg/L,the highest open-circuit potential and external voltage of 1148m V and 234m V were obtained,and the power density reached 177m W/m^3 at 1kΩexternal load.The maximum coulombic efficiency and net energy production arrived 18%and19.5MJ/t.After 203 days,the removal rate of COD arrived 68.1%.During the operation of cells,the concentration of VFA and p H changed obviously.The VFA of MFC-800 increased to 388mmol/L,compared with the initial concentration,increased by 3.5times.The p H value decreased from 7.25 to 5.71.In addition,the nutrition content of anodic fermentation residue met the standard of organic fertilizer（NY525-2012）.Therefore,the residue of anode fermentation could be used for organic fertilizer production.

关 键 词：微生物燃料电池 高锰酸钾 牛粪 发酵 产电 

分 类 号：X712[环境科学与工程—环境工程] X713