MnO_2催化Fenton试剂降解苯酚废水  

Phenol degradation by MnO_2 assisted Fenton reagent oxidation technology

作　　者：陈立群[1] 张永刚[1] 

机构地区：[1]天津工业大学环境与化学工程学院环境工程系,天津300387

出　　处：《环境工程学报》2012年第11期4047-4052,共6页Chinese Journal of Environmental Engineering

基　　金：天津市教委滨海新区科技特派员科技专项(SB20080024)

摘　　要：实验对MnO2催化Fenton试剂氧化高浓度苯酚废水的动力学特性和去除效果进行了研究。结果表明,MnO2可以提高Fenton试剂体系对苯酚的降解率以及COD的去除率;Fenton试剂以及MnO2催化Fenton试剂氧化苯酚废水体系中苯酚的降解都符合拟一级动力学模型。在MnO2催化Fenton试剂氧化体系中,苯酚的降解速率常数有明显提高,反应活化能也有所降低,说明MnO2的加入可以使反应容易进行。废水降解前后紫外可见吸收光谱和红外谱图表明,Fenton试剂法将苯酚可能降解为羧酸、烯烃等有机物中间体。The kinetics character and removal effect on high-concentration phenol degradation by MnO2 assisted Fenton reagent oxidation technology were researched.The results show that the removal efficiency of phenol and COD are significantly enhanced by using MnO2.Phenol degradation follows First-order reaction under individual Fenton reagent process and MnO2 assisted Fenton reagent oxidation technology.The constant of phenol degradation velocity is enhanced and activation energy is reduced,showing that Fenton reaction could be easily occurred by using MnO2.From the UV-Vis absorption spectra and FTIR spectra of wastewater,carboxylic acids and olefins organic intermediates may be produced.

关 键 词：MNO2 FENTON 苯酚 动力学 

分 类 号：X703[环境科学与工程—环境工程]