Characterization of wastewater treatment by two microbial fuel cells in continuous flow operation
Characterization of wastewater treatment by two microbial fuel cells in continuous flow operation
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DOI：
10.1080/09593330.2015.1064169
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发表时间：
2016-01
影响因子：
2.8
通讯作者：
Keiichi Kubota;Tomohide Watanabe;Takashi Yamaguchi;K. Syutsubo
中科院分区：
文献类型：
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作者：
Keiichi Kubota;Tomohide Watanabe;Takashi Yamaguchi;K. Syutsubo
采用单室串联式微生物燃料电池（MFC）处理糖蜜稀释废水，并进行连续运行试验。此外，还对阳极和阴极之间的串联和并联对发电的影响进行了实验研究。当水力停留时间为26 h时，两个串联MFC工艺的COD去除率为79.8%，库仑效率为11.6%。当电极处于单独连接、串联连接和并联连接模式时，功率密度分别为0.54、0.34和0.40 W m-3。在串联连接中获得高开路电压。在低有机负荷率（OLR），由于有机质的短缺，功率密度下降。在高OLR下，由于甲烷发酵的增强，发电效率趋于降低。因此，通过使用合适的OLR范围可以实现高功率密度和效率。
A two serially connected single-chamber microbial fuel cell (MFC) was applied to the treatment of diluted molasses wastewater in a continuous operation mode. In addition, the effect of series and parallel connection between the anodes and the cathode on power generation was investigated experimentally. The two serially connected MFC process achieved 79.8% of chemical oxygen demand removal and 11.6% of Coulombic efficiency when the hydraulic retention time of the whole process was 26 h. The power densities were 0.54, 0.34 and 0.40 W m−3 when electrodes were in individual connection, serial connection and parallel connection modes, respectively. A high open circuit voltage was obtained in the serial connection. Power density decreased at low organic loading rates (OLR) due to the shortage of organic matter. Power generation efficiency tended to decrease as a result of enhancement of methane fermentation at high OLRs. Therefore, high power density and efficiency can be achieved by using a suitable OLR range.