双室型微生物燃料电池降解罗丹明B染料废水

Degradation of Rhodamine B Dye Wastewater in Dual-Chamber Microbial Fuel Cell

染料废水含有大量有机污染物,还具有色度高、COD高、盐分高等特点,是典型的难降解有机废水。微生物燃料电池可利用阳极微生物降解有机物的同时产生电子经外电路传递至阴极,实现降解和产电双同时的功能。组装数组双室型微生物燃料电池,以污水厂厌氧\好氧混合污泥为接种源进行接种,以罗丹明B模拟染料废水为目标污染物,考察微生物燃料电池阳极降解染料废水的效果,优化了染料废水初始浓度、pH值、外接电阻等实验条件,通过对降解过程中间产物的测定推断罗丹明B废水在微生物燃料电池体系的降解路径和机理。

Dye wastewater contains a large number of organic pollutants,and has the characteristics of high chroma,high COD and high salinity.It is a typical refractory organic wastewater.Microbial fuel cell can use anode microbial degradation of organic matter and generate electrons through the external circuit to the cathode,thus achieving organic degradation and power generation at the same time.Herein,several double-chamber microbial fuel cells were assembled,and the anaerobic/aerobic mixed sludge of the sewage plant was inoculated as the inoculation source.Rhodamine B simulated dye wastewater was used as the target pollutant to investigate the effect of microbial fuel cell anode degradation of dye wastewater.The initial concentration of dye wastewater,pH value,external resistance and other experimental conditions were optimized.The degradation mechanism of rhodamine B in the microbial fuel cell system was inferred by the determination of intermediate products in the degradation process.