离子膜在填料型微生物燃料电池中的应用

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利用不同廉价离子交换膜作为填料型微生物燃料电池(MFC)的分隔材料,考察其运行情况,表征其内阻、极化曲线、功率密度、膜面电阻以及对有机物和氧气的扩散系数。结果表明:相比以阳离子交换膜作为分隔材料的MFC(CMFC),以阴离子交换膜作为分隔材料的MFC(AMFC)内阻更低,功率密度更高,最大功率密度可达2.4 W/m2。在长期运行过程中AMFC的内阻及膜面电阻变化均较小。长期运行后,阳离子交换膜靠着阴极侧沉积较多的盐类,而阴离子交换膜则未观测到。阴离子交换膜对NaAc的阻隔效果较阳离子交换膜差,而对葡
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