Electricity Generation Using Membrane-less Microbial Fuel Cell during Wastewater Treatment

upflow 模式膜更少微生物引起的燃料房间(ML-MFC ) 为废水处理被设计。小粒的石墨电极，在尺寸灵活，在 ML-MFC 被采用。当 biocatalyst 和人工的废水作为底层被测试，在厌氧的激活的污泥在场的微生物被使用。在电气化学地活跃的微生物丰富阶段期间， 536 mW 路 m 的稳定的力量产量 ? 3 被在批模式跑的 ML-MFC 与阳极体积的参考产生。在 ML-MFC 从批模式被改变到通常连续的模式以后，电压产量从 203 mV 减少了到大约 190 mV，显示那 planktonic 在 ML-MFC 的电气化学地活跃的细菌的紧张可以与自河一起被移走。周期的 voltammograms 证明依附的微生物比 planktonic 微生物拥有了更高的 bioelectrochemical 活动。到阴极的强迫的通风显然有益于电产生。更高的喂率和更长的电极距离两个都增加了电产生。coulombic 收益在整个学习是不超过 20% ，它是比有膜的 MFC 的低的。从阴极传播到阳极的溶解的氧可以消费底层的部分，这被建议。

An upflow mode membrane-less microbial fuel cell （ML-MFC） was designed for wastewater treatment. Granular graphite electrodes, which are flexible in size, were adopted in the ML-MFC. Microbes present in anaerobic activated sludge were used as the biocatalyst and artificial wastewater was tested as substrate. During the electrochemically active microbe enrichment stage, a stable power output of 536 mW.m-3 with reference to the anode volume was generated by the ML-MFC running in batch mode. The voltage output decreased from 203 mV to about 190 mV after the ML-MFC was changed from batch mode to normally continuous mode, indicating that planktonic electrochemically active bacterial strains in the ML-MFC may be carried away along with the effluent. Cyclic voltammograms showed that the attached microbes possessed higher bioelectrochemical activity than the planktonic microbes. Forced aeration to the cathode benefited the electricity generation obviously. Higher feeding rate and longer electrode distance both increased the electricity generation. The coulombic yield was not more than 20% throughout the study, which is lower than that of MFCs with membrane. It is proposed that dissolved oxygen diffused from the cathode to the anode may consume part of the substrate.