双室微生物燃料电池同时去除废水中的苯酚和硝酸盐

Simultaneous removal of phenol and nitrate from wastewater using a dual chamber microbial fuel cell

构建了一种双室微生物燃料电池,以苯酚为阳极燃料,同时去除阴极室的硝酸盐废水。结果表明,在闭合情况下,该微生物燃料电池阳极室的苯酚降解效率达到7.6 mg/(L·h),是开路情况下的2倍;反应开始后的5 d内,闭合系统阴极室硝酸盐降解效率达到4.43 mg/(L·d),是开路情况下的2倍多,表明了该MFC系统可以同时去除废水中2种难降解污染物,并且与传统的生物降解方式相比较,具有更快的降解速率。

A dual chamber microbial fuel cell（MFC） was constructed which used phenol as anode room fuel for the removal of nitrate from the wastewater in the cathode room.Two MFCs were operated simultaneously,one was closed-circuit system,and the other was open-circuit system.The results showed that phenol degradation rate in the closed-circuit system was 7.6 mg/（L·h）（twice faster than that of the open-circuit system）;nitrate degradation rate in the closed-circuit system was 4.43 mg/（L·h）（twice faster than that of the open-circuit system）.The results demonstrated that the MFC could remove two refractory substances from the wastewater.And this kind of wastewater treatment got higher biodegradation rate compared with the traditional biodegradable apparatus.