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环境化学  2015 

活性炭/过一硫酸盐降解水中金橙Ⅱ:活性炭的循环利用

Keywords: 活性炭,过一硫酸盐,循环利用,金橙Ⅱ

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Abstract:

研究了常温常压下颗粒状活性炭(GAC)与过一硫酸盐(PMS)联合体系降解水中金橙Ⅱ时GAC可循环利用的问题.实验发现,本体系中GAC可以重复使用,循环4次后GAC的催化活性只降低了4.6%.说明该体系具有较好的GAC再生能力,氧化剂的用量越大再生能力越强.在GAC催化PMS降解金橙Ⅱ的过程中,PMS可能会氧化GAC的表面,使得GAC的催化能力得以加强.同时发现该体系中仅是GAC的催化能力得到很好的再生,而吸附能力并没有得到再生.当GAC几乎失去吸附能力时,催化能力仍几乎能保持不变.当PMS与金橙Ⅱ的物质的量之比为201时,连续流实验进行10d,GAC的催化活性仍未减弱,GAC的使用寿命较长.该体系具有很好的实际应用潜力.

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