对比研究空气阴极单室与双室微生物燃料电池(MFC)在去除硫化物及产电性能。当硫化物浓度为100mg/L,共基质葡萄糖浓度为812 mg/L时,单室和双室MFC的最大开路电压分别达897.2 m V和821.7 m V,最大输出功率分别为340.0 m W/m^2和273.8 m W/...对比研究空气阴极单室与双室微生物燃料电池(MFC)在去除硫化物及产电性能。当硫化物浓度为100mg/L,共基质葡萄糖浓度为812 mg/L时,单室和双室MFC的最大开路电压分别达897.2 m V和821.7 m V,最大输出功率分别为340.0 m W/m^2和273.8 m W/m^2,库仑效率分别为5.6%和10.7%,单室MFC表现出更好的电能输出,而双室MFC的能量转化效率更高。单室MFC运行72小时后,含硫化物废水中的硫化物去除率为75.4%。含硫化物废水中的有机质也可以得到同步去除,TOC的去除率为17.8%。上述结果表明利用MFC去除硫化物并同步产电是可行的,阴极是系统的主要限制因素。展开更多
There is limited information about the factors that affect the power generation of single-chamber microbial fuel cells （MFCs） using soil organic matter as a fuel source. We examined the effect of soil and water dept...There is limited information about the factors that affect the power generation of single-chamber microbial fuel cells （MFCs） using soil organic matter as a fuel source. We examined the effect of soil and water depths, and temperature on the performance of soil MFCs with anode being embedded in the flooded soil and cathode in the overlaying water. Results showed that the MFC with 5 cm deep soil and 3 cm overlaying water exhibited the highest open circuit voltage of 562 mV and a power density of 0.72 mW m-2. The ohmic resistance increased with more soil and water. The polarization resistance of cathode increased with more soil while that of anode increased with more water. During the 30 d operation, the cell voltage positively correlated with temperature and reached a maximum of 162 mV with a 500 ft external load. After the operation, the bacterial 16S rRNA gene from the soil and anode was sequenced. The bacteria in the soil were more diverse than those adhere to the anode where the bacteria were mainly affiliated to Eseherichia coli and Deltaproteobacteria. In summary, the two bacterial groups may generate electricity and the electrical properties were affected by temperature and the depth of soil and water.展开更多
文摘对比研究空气阴极单室与双室微生物燃料电池(MFC)在去除硫化物及产电性能。当硫化物浓度为100mg/L,共基质葡萄糖浓度为812 mg/L时,单室和双室MFC的最大开路电压分别达897.2 m V和821.7 m V,最大输出功率分别为340.0 m W/m^2和273.8 m W/m^2,库仑效率分别为5.6%和10.7%,单室MFC表现出更好的电能输出,而双室MFC的能量转化效率更高。单室MFC运行72小时后,含硫化物废水中的硫化物去除率为75.4%。含硫化物废水中的有机质也可以得到同步去除,TOC的去除率为17.8%。上述结果表明利用MFC去除硫化物并同步产电是可行的,阴极是系统的主要限制因素。
基金Supported by the Main Direction Program of Knowledge Innovation of Chinese Academy of Sciences(No.KZCXZ-EW-402)the Hundred Talents Program of Chinese Academy of Sciences+1 种基金the International S&T Cooperation Program of China(No.2011DFB91710)the China Postdoctoral Science Foundation(Nos.2011M500410 and 2012T50142)
文摘There is limited information about the factors that affect the power generation of single-chamber microbial fuel cells （MFCs） using soil organic matter as a fuel source. We examined the effect of soil and water depths, and temperature on the performance of soil MFCs with anode being embedded in the flooded soil and cathode in the overlaying water. Results showed that the MFC with 5 cm deep soil and 3 cm overlaying water exhibited the highest open circuit voltage of 562 mV and a power density of 0.72 mW m-2. The ohmic resistance increased with more soil and water. The polarization resistance of cathode increased with more soil while that of anode increased with more water. During the 30 d operation, the cell voltage positively correlated with temperature and reached a maximum of 162 mV with a 500 ft external load. After the operation, the bacterial 16S rRNA gene from the soil and anode was sequenced. The bacteria in the soil were more diverse than those adhere to the anode where the bacteria were mainly affiliated to Eseherichia coli and Deltaproteobacteria. In summary, the two bacterial groups may generate electricity and the electrical properties were affected by temperature and the depth of soil and water.
