Abstract:

A novel chamberless microbial fuel cell（MFC）with continuous-flow structure was built to study the anaerobic sludge acclimation processThe results showed that COD load of culture medium，anode material and the discharging current can significantly affect the performance of MFCIn initial acclimation period，it is unsuitable to have high COD load and high current，otherwise the normal metabolize of microbes would be interrupted，losing its activity; the current not only affected the anode performance，but also affected the power density of MFCThe graphite/PTFE composite film with 20% PTFE showed the best performance.

Key words: 微生物燃料电池, 驯化, PTFE石墨膜

摘要：

采用一种无腔室连续流结构作为微生物燃料电池的反应器，考察了驯化条件和阳极电极材料对无介体微生物燃料电池性能的影响。结果表明，培养液COD负荷、电极材料以及放电电流对微生物燃料电池的性能都有直接影响。在驯化的初始阶段培养液的COD负荷和电流不宜过大，否则会影响厌氧微生物代谢，导致其丧失电活性;以20%PTFE石墨膜作为阳极电极材料，其孔径大小与厌氧微生物个体大小更为匹配，同时也具有较高的孔隙率，表现出最好的阳极性能。

关键词: 微生物燃料电池, 驯化, PTFE石墨膜