太阳能电池协同微生物燃料电池产电及对底泥的修复影响

The effect of electricity generation and sediment remediation by microbial fuel cell system cooperated with solar cell

装置以河道黑臭底泥为底物,改性后的碳毡为电极,通过外接不同额定电压的太阳能电池板,构建了一种新型的SC-MFC(solar cell-microbial fuel cell)体系,太阳能电池的引入对普通MFC产电性能及底泥污染物去除效率产生了的影响。通过一个周期的运行,得到如下结论:在太阳能电池表面辐照强度53 mW·cm^(-2)的条件下,SC-MFC系统的最大输出电压和输出功率密度与普通的MFC相比均有明显的提高。对于底泥污染物的去除,SC-MFC系统随着串联太阳能电池额定电压的增大,去除效率呈现出先升高后降低的趋势。在外接0.5 V、1 V、2 V太阳能电池时,底泥对污染物修复效果较好,并且底泥中有机质、总磷、氨氮、硝态氮的最大去除率为20.88%、32.39%、48.41%、62.66%,它们分别在串联1 V、2 V、2 V、0.5 V太阳能电池板时达到。

The device was constructed with black-odorous sediment as substrate and the modified carbon felt as electrode.We achieved a solar cell-microbial fuel cell new system after we inserted different rated voltage solar cells in series.The introduction of solar cells had an influence on electricity generation and sediment remediation.Several conclusions we got after a period operation:at the irradiation intensity of53mW·cm-2on the surface of solar cells,the maximum output voltage and power density of SC-MFC systems were higher than the normal MFC system.The pollutant removal in the new system showed the tendency:along with the rated voltage of solar cells rising,the removal efficiencies increased at first and decreased subsequently.The effects of remediation were better relatively with0.5V,1V,2V solar cells installed in series,and the largest removal efficiencies of organic matter,total phosphorus,ammonium nitrogen and nitrate nitrogen were20.88%,32.39%,48.41%,62.66%,which appeared respectively with1V,2V,2V,0.5V extra solar cells.