Abstract：To investigate electricity generation and organic matter degradation in different types of cathode microbial fuel cells, a pair of two-chambered ferricyanide MFC and biocathode MFC were constructed. The changes of voltage and power density and degradation of sewage sludge organic matter in those two systems were studied. The results indicated that, with freeze/thaw treated sludge as substrate, the ferricyanide MFC achieved a stable voltage of 0.726V after running 8h, SCOD peaked at 3771.4mg/L in 6d and a maximum power density of 10.3W/m3was obtained, and the TCOD removal efficiency was 70.3% at the end of the cycle (20d). The biocathode MFC achieved a stable voltage of 0.76V after running 3d and then declined after operation of 22days, SCOD peaked at 4538.0mg/L in 15~20d and achieved a maximum power density of 13.7W/m3, and 80.6% of TCOD was removed at the end of cycle (30d). Compared with the two-chambered ferricyanide MFC, the two-chambered biochathode MFC could promote sewage sludge organic matter dissolution and electricity generation, the use of soluble carbohydrates and the degradation of organic matter were more complete, and at the same time the biocathode MFC was in favor of long-term stable operation.
陈悦佳, 赵庆良, 柳成才. 冻融处理对不同阴极构型MFC产电及有机物降解的影响[J]. 中国环境科学, 2015, 35(5): 1359-1367.
CHEN Yue-Jia, ZHAO Qing-Liang, LIU Cheng-Cai. Effect of sludge freezing/thawing on electricity generation and organic degradation in different types of cathode MFCs. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(5): 1359-1367.