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类Fenton试剂处理苯酚废水的影响因素及动力学研究

DOI: 10.7685/j.issn.1000-2030.2012.04.023, PP. 126-129

Keywords: 类Fenton试剂,苯酚废水,动力学

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Abstract:

采用一种类Fenton试剂法,即Fe3+和H2O2的组合代替Fe2+和H2O2的组合法,对氧化降解苯酚的影响因素及反应动力学进行研究。结果表明当Fe3+、H2O2的加入量分别为1.3×10-3和1.3×10-2mol?L-1,且初始pH值约为4时,苯酚的降解率最大,几乎达到100%。同时分别用一级动力学、二级动力学及复合一级动力学方程对该条件下的反应进行拟合,复合一级动力学方程能最佳拟合相应的动力学过程,但2个平行反应的速率系数k1≈9.24k2,因此可近似认为是一级动力学过程。

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