微生物燃料电池处理含铬废水并同步产电

Modern Chemical Industry(2009)

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Abstract
以葡萄糖为阳极燃料、含铬废水为阴极液,碳毡为阳极、石墨板为阴极构建了双室微生物燃料电池,考察了阳极条件(底物浓度)及阴极条件(pH、初始六价铬浓度)对含铬废水的降解及MFC的产电性能的影响。结果表明低阴极液pH和高初始Cr(Ⅵ)浓度能改善MFC产电性能。当pH=2、初始六价铬浓度为177mg/L、反应时间为10h时,最大输出功率为108mW/m2,六价铬去除率为92.8%。阳极底物浓度对微生物燃料电池的性能也有影响。在微生物燃料电池中,阴极极化较小,表明该燃料电池有稳定的性能,微生物燃料电池对含铬废水的处理有应用潜力并能同步产电。
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Key words
hexavalent chromium,catholyte,microbial fuel cell,power density
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