二茂铁催化光助非均相类Fenton氧化法处理含罗丹明B废水  

Photo-assisted degradation of rhodamine B by Ferrocene-catalyzed heterogeneous Fenton-like reaction

作　　者：存洁[1] 田森林[1] 王倩[1] 曾俊[1] 

机构地区：[1]昆明理工大学环境科学与工程学院,云南昆明650500

出　　处：《中国环境科学》2013年第6期1011-1016,共6页China Environmental Science

基　　金：国家自然科学基金资助项目(20607008;21077048);浙江省有机污染过程与控制重点实验室开放基金

摘　　要：采用二茂铁(Fc)替代UV/Fenton体系中的催化剂Fe2+,构建了一个新的UV/H2O2/Fc非均相Fenton反应体系,研究了该反应体系对含罗丹明B模拟废水的脱色性能.结果表明,Fc对水中UV/Fenton反应具有良好的催化活性,对罗丹明B起氧化作用的主要物质是.OH和其他活性物质.对水中罗丹明B的氧化脱色反应的催化性稳定,对Fc重复回收利用3次后对模拟废水仍有99%以上的脱色率;UV/H2O2/Fc体系处理罗丹明B的最佳工艺条件是H2O2的浓度为1.5×10-2mol/L,Fc的投加量为0.13g/L,初始pH值在2-6之间.证实了Fc作为光助非均相Fenton体系催化剂的可能性.Ferrocene（Fc） was used as a substitute for catalyst of heterogeneous Fenton-like reaction, ferrous ion （Fe2＋）. Consequently, a new UV/Fc/H2O2 heterogeneous Fenton-like reaction system was established. The decolourization capacity of the new reaction system to rhodamine B-contained simulated wastewater was experimentally examined. Fc could efficiently catalyze aqueous heterogeneous Fenton-like reaction. Accordingly, -OH and the other similar reactive intermediates dominated the oxidative degradation of rhodamine B. Steady catalysis capacity of the new reaction system to the oxidative decolourazation process of rhodamine B was observed also. Even Fc was reclaimed and reused for three times, the decolourazation ration to the simulated wastewater was still higher than 99%. The proposed optimal processing conditions for decolotwization of rhodamine B-contained wastewater were as follows： 1.5× 10^-2mol/L of H2O2, 0.13g/L of Fc and initial pH range was 2-6. To substitute Fc for Fe2＋ catalyst of photo-assisted heterogeneous Fenton reaction was proved to be feasible.

关 键 词：类FENTON 二茂铁 罗丹明B 

分 类 号：X703.1[环境科学与工程—环境工程]