摘要
本文研究了模拟废水中不同盐度对微生物燃料电池(Microbial fuel cell,MFC)性能的影响.当向MFC中依次添加0,20,40,60,70g/LNaCl时,MFC的最大输出电压从660mV下降到130mV,库仑效率也从67%下降到4%.如果向MFC中直接添加40g/L和70g/L NaCl并运行两个周期后,MFC无电能输出,然而,停止添加NaCl(盐度解除)后MFC产电性能能够在60h内恢复.此外,当盐度高于40g/L NaCl时,阳极微生物群落发生明显的变化.研究结果可为MFC或其他生物反应器处理盐度废水提供一定的依据.
Effects of salinity of the simulated wastewater on power generation and the microbial community structure in the microbial fuel cell （MFCs） were investigated. When the MFC was operated sequentially at NaCI concentrations of 0, 20, 40, 60, and 70 g/L, the maximum voltage outputs significantly decreased from 660 to 130 mV and coulombic efficiency （CE） from 67% to 4%. When the MFC was operated at NaC1 concentrations of 40 g/L then 70 g/L NaCl, no obvious electricity was generated after two cycle operations. However, in the absence of NaCl, voltages could be recovered to the maximum value of 630 mV within 60 h in the MFC after the salt shock. In addition, high salinity （〉 40 g/L NaCl） reduced significantly the microbial diversity and influenced the microbial community structure.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2013年第5期832-837,共6页
China Environmental Science
基金
国家自然科学基金资助项目(50608070
50779080
51278500)
环境模拟与污染控制国家重点联合实验室专项基金(08K02ESPCT)
广州市科技计划项目(2012J4300115)
关键词
盐度
微生物燃料电池
产电
微生物群落结构
salinity
microbial fuel cell
electricity generation
microbial community structure
