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脱氮副球菌YF1微生物燃料电池生物阴极脱氮和产电

Keywords: 微生物燃料电池,纯种生物阴极,脱氮,副球菌YF1,产电

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Abstract:

以脱氮副球菌YF1构建纯种生物阴极微生物燃料电池(microbialfuelcell,MFC)进行脱氮和产电机理的研究。研究结果发现,阴极碳氮比、pH值对产电和脱氮效率有明显影响。当MFC的阴极运行条件pH值为8.0,碳氮比为20时,运行时间15h时,脱氮率高达100%,输出电压为150mV。上述结果表明,微生物燃料电池运行过程中,细菌降解硝酸根的机理为将硝酸根还原为N2或者直接将其作为自身的营养物质而利用。循环伏安(CV)与扫描电镜(SEM)的结果表明,在微生物燃料电池运行中,副球菌YF1通过接触导电作为产电的电子供体。

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