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化工学报  2015 

铁碳微电解处理含硝基苯废水

DOI: 10.11949/j.issn.0438-1157.20141329, PP. 1150-1155

Keywords: 铁碳微电解,电解,零价铁,硝基苯,活性炭,动力学

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Abstract:

以硝基苯为模型污染物,研究了铁碳微电解过程中硝基苯初始浓度、铁屑用量、铁碳比及pH(pH<3.0)等因素对降解过程的影响规律。研究结果表明,硝基苯废水初始浓度越大,达到一定去除率时所需的铁屑用量越大。外加活性炭会与降解底物竞争电子,导致电子利用率不高,微电解的还原效率并没有因此提高。低pH可以加速铁碳微电解处理速率,反应过程中pH的升高对硝基苯还原中间产物羟基苯胺和苯胺的形成及分布影响较大,有限停留时间内主要还原产物是二者的混合物。

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