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以两种酚类有机物为基质的微生物燃料电池产电特性

Keywords: 微生物燃料电池,2,4-二氯苯酚,对硝基苯酚,库仑效率,功率密度

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Abstract:

以城市污水处理厂的厌氧污泥为接种微生物,在外电阻为1900Ω下,采用双室微生物燃料电池(MFC)分别对以难降解的有毒有机物2,4-二氯苯酚(DCP),对硝基苯酚(PNP),对硝基苯酚和2,4-二氯苯酚为基质时进行有机物降解和产电性能的研究。实验结果表明以DCP(50mg/L)为单一基质时,MFC的运行周期长达225h左右,负载两端的最大电压值达393.7mV,库仑效率为13.73%;而以PNP和DCP为混合基质时,PNP明显促进DCP的降解,使得DCP的去除率高达64.52%,同时PNP的去除率也达到94.47%。实验最终表明,MFC能够以2,4-二氯苯酚和对硝基苯酚为基质,在实现DCP和PNP降解的同时可稳定高效地向外输出电能。

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