微波强化Fenton试剂降解苯酚动力学研究  

Kinetic study on phenol degradation by using microwave assisted Fenton reagent oxidation technology

作　　者：赵德明[1] 王坤[1] 张建庭[1] 金宁人[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江杭州310032

出　　处：《浙江工业大学学报》2010年第6期591-596,共6页Journal of Zhejiang University of Technology

基　　金：中国博士后科学基金资助项目(20100471716);浙江省自然科学基金资助资目(Y5100075)

摘　　要：研究了在微波强化Fenton试剂(MW/Fenton)氧化系统下苯酚的降解效果、机理和动力学,并且探讨了主要影响参数.较佳条件:初始pH为5,n(H2O2)∶n(Fe2+)=10∶1,[Fe2+]=8.82×10-4mol/L,反应温度30℃.苯酚在单独微波处理、Fenton试剂氧化和MW/Fenton催化氧化系统下的降解均符合表观一级动力学.在MW/Fenton系统中苯酚的降解有显著提高,拟一级动力学速率常数增强因子可达到2.92,表明存在明显协同效应.The Kinetic study on phenol degradation by using microwave assisted Fenton reagent oxidation technology was conducted to show the efficiency and the mechanism of the degradation process. The optimal operating parameters were initial pH 5.0, [Fe2＋] = 8.82 × 10^-4 mol/L, H2O2/Fe2＋ molar ratio 10 ： 1 and temperature 30 ℃. Phenol degradation followed pseudo-first order reaction under individual MW radiation or/and Fenton oxidation process while significantly enhanced in the combined MW/Fenton system. This indicated that there existed synergetic effects in the MW/Fenton process. The promoted factor for phenol degradation rate constant was about 2.92.

关 键 词：苯酚 FENTON试剂 微波 协同效应 动力学 

分 类 号：X78[环境科学与工程—环境工程] TQ209[化学工程—有机化工]