Fenton试剂液相催化氧化法净化甲苯气体  

Purification of Toluene-containing Gas Stream by Aqueous Oxidation with Fenton Agent

作　　者：莫虹[1] 田森林[1] 蒋蕾[1] 戴春皓[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,昆明650093

出　　处：《武汉理工大学学报》2010年第5期116-119,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(20607008)

摘　　要：证明利用Fenton试剂催化氧化法处理甲苯废气是可行的。研究分析了初始pH值、H2O2浓度、[H2O2]/[Fe^2＋]、不同金属离子等因素对甲苯去除率的影响。研究结果表明：最佳实验条件为pH=2.6、H2O2的浓度在0.4-0.5 mol/L、[H2O2]/[Fe^2＋]=4、T=50℃;不同金属离子对甲苯的最大去除率为：Fe^2＋＋Fe^3＋〉Fe^2＋〉Cu^2＋＋Fe^2＋〉Fe^3＋〉Cu2＋＋Fe^3＋〉Cu^2＋;穿透时间为：Cu^2＋＋Fe^3＋〉Cu^2＋＋Fe^2＋〉Fe^2＋＋Fe^3＋〉Fe^3＋〉Fe^2＋=Cu^2＋。It was proved to be feasible that the method by aqueous oxidation with Fenton agent can be used to purify the toluene-containing gas stream.The primary factors such as initial solution pH,H2O2 concentration,mole ratio of [H2O2]/,different metal ions which would influence the removal efficiency of toluene,were investigated.The following conclusions were obtained： pH 2.6,H2O2 concentration of 0.4～0.5 mol/L,/ =4,T=50 ℃ were the best experimental conditions;The catalytic capacities of various metal ions to activate H2O2 follow the order： Fe^2＋＋Fe^3＋ Fe^2＋ Cu^2＋＋Fe^2＋ Fev3＋ Cu^2＋＋Fe^3＋ Cu^2＋ ;The order of the penetration time was： Cu^2＋＋Fe^3＋ Cu^2＋＋Fe^2＋ Fe^2＋＋Fe^3＋ Fe3＋ Fe^2＋ = Cu^2＋.

关 键 词：甲苯 FENTON试剂 液相催化氧化 

分 类 号：X131.1[环境科学与工程—环境科学]