Electrochemistry(electro-assisted)was introduced to the microbial reduction of PCP in order to resolve the lack of electron donor and the slow reduction rate.It was found that the PCP degradation efficiency of 97% in the electro-assisted microbial system was higher than the sum of that of 62% in the microbial system and that of 26% in the electrochemical system by about 10%.The cyclic voltammetry(CV)curves of the PCP reduction degradation in the electro-assisted microbial system and in the electrochemical system were compared.There were obvious redox peaks in the cyclic voltammetry curves of the electro-assisted microbial system and the electron transfer rate was 0.856 m穝-1

the electron transfer coefficient was 2.024 in a two-electron transfer process

which conformed to the biodegradation characteristics.The electron given by the electric field did accelerate the electron transfer during the microbial respiration.There was reverse electronic transfer between the electrodes

cytochrome c

cty穊c1

NAD and pollutants in the electro-assisted microbial system and the long-range electron transfer processes of multiphase interface between the electrode

microorganisms and pollutants were implemented. The study provides a new concept of electrochemical synergy with microbial reduction for environmental pollution control.