In order to further improve the electrochemical performance of microbial fuel cell(MFC),a central pulse gas-liquid-solid circulating fluidized bed microbial fuel cell reactor(CPCFB-MFC)was designed and constructed.The effects of pulse liquid flow frequency,amplitude,particle circulation rate,and gas flow rate on the power generation and sewage treatment characteristics of CPCFB-MFC were studied by designing multiple experimental conditions.Under the conditions of central liquid flow pulse frequency of 0.25 Hz,pulse amplitude of 0.08 m/s,particle circulation rate of 3.3 kg/(m2·s)and gas flow of 2 L/min,the output voltage of CPCFB-MFC reached the highest,which was 649.2 mV,and the sewage treatment time was the shortest,which was 77 h.By comparing the sewage treatment efficiency and comprehensive energy consumption under different operating conditions,it can be proven that the adoption of pulse liquid flow and gas-liquid-solid multiphase operation can further improve the comprehensive performance of MFC reactors.This work is of great significance for promoting the industrialization of microbial fuel cell technology.
维普
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