The Influence on MFC voltage Of Different types of oilfield produced water as anode substrate

摘要

The voltage is the critical electrochemical parameter in microbial fuel cells (MFCs). There are three major oilfield wastewaters including water flooding produced water, polymer flooding produced water and ASP flooding produced water. These three wastewaters were used as anode substrate of three MFCs in this study. The influence and the influencing factors of the output voltage of the three MFCs and the produced water main refractory organics removal effect were studied. The results show that During this reaction period, MFCs cathode potential stays relative stable, however, anode potential shows a remarkable increasing trend, thus, the anode contributes mostly to the change in output voltage. COD removal effect of Anode substrate and the coulombic efficiency are both influencing factors of the anode potential. The microbial fuel cell for wastewater of surfactant, remove the best effect. For different produced water, oil and polymer removal effect abide by the MFC output voltage and COD value changing law.