Abstract
AbstractIn the present work, dual‐chamber microbial fuel cell (MFC) was constructed, in which anaerobic sludge was used as the inoculum and potassium ferricyanide as the electron acceptor. We have investigated the untapped potential of carbon microspheres modified graphite anode (CGA) fabricated by hydrothermal and calcinations method in the MFCs operation. The results showed that the CGA could be utilized as a novel and efficient MFC anode. The output power of the MFC involved with CGA is approximately 358 mW·m−2, which is 3.1 times of the counterpart MFC with graphite anode (GA). Furthermore, this MFC showed a 68% chemical oxygen demand (COD) removal rate of the wastewater. Through further analysis, the CGA could improve the specific surface area and enhance the adsorption of microorganism, which could efficiently favor the electron transfer rate between the microorganism and external circuit, resulting in the increase of the electrochemical activity of MFC.
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