[Recenct progress in electricigens and microbial fuel cell].

The discovery of Electricigens substantially changed the meaning of Microbial Fuel Cell (MFC) and exhibited a broad prospect for application. This kind microorganism can completely oxidize organic compounds with electrode as sole electron acceptor and then transfer the electrons derived from that oxidation onto the anode of a MFC through electron transport chain. When the electrons transfer from anode to cathode, the current was generated continuously. At same time, they gain energy to support their growth from the electron transport. The biochemical metabolism process was considered as a new type microbiological respiration. Based on the new concept, MFC offered the possibility of efficient treatment waste-water and generation electricity simultaneously, which would fuel the waste-water into a profitable industry in the future. So the application of MFC in the waste-water treatment would be most promising.