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温度对淀粉酶强化污泥为燃料微生物燃料电池的影响

Keywords: 温度,剩余污泥,微生物燃料电池,淀粉酶,减量化

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Abstract:

采用单室无膜悬浮阴极微生物燃料电池(MFC),对比分析了温度变化对淀粉酶强化剩余污泥为燃料的MFC(ESMFC)产电特性和污泥减量化效果的影响.研究表明,在40℃时ESMFC最大功率密度相对于参照组(投加等量失活酶系统)功率密度输出增加最大,为94%;此时CE也最大,为9.2%。这主要是由于在此温度下淀粉酶对系统的促进作用更明显。在45℃时,ESMFC系统中污泥减量化效果最好.当运行温度为45℃时,ESMFC中TCOD去除率为87.2%,投加等量失活淀粉酶的ESMFC中TCOD去除率为55.7%;ESMFC中VSS/TSS从原泥中的67.34%下降到28.07%,对照组则下降到45.61%。此研究对投加淀粉酶的ESMFC实际应用具有一定指导意义。

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