[超声辅助芬顿试剂对甲基橙的脱色研究]

[Study on ultrasound-assisted decolorization of methyl orange with Fenton reagent].

作者信息

Tao Chang-Yuan, Liu Zuo-Hua, Li Xiao-Hong, Du Jun, Si Xiu-Jie, Zhu Jun

机构信息

Institute of Environmental Science College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, China.

出版信息

Huan Jing Ke Xue. 2005 Sep;26(5):111-4.

PMID:16366480

Abstract

Employed with ultrasound, Fenton reagent, ultrasound-Fenton methods, performance and mechanism of decolorization and COD removal were investigated for methyl orange. Results indicated that little decolorization phenomenon was observed with ultrasound solely. For 400mg/L methyl orange solution, 67.51% decolorization ratio and 63.15% COD removal ratio were obtained with Fenton reagent for 30 min. Combined the same operation conditions with ultrasonic field, decolorization ratio and COD removal ratio are 86.91% and 80.32%, respectively. Ultrasound and Fenton reagent have synergistic action on degradation of methyl orange solution. It is oxidative reaction for methyl orange solution with Fenton reagent in strong acidic condition, and it is reduction process for the degradation when pH>5.

摘要

采用超声、芬顿试剂、超声 - 芬顿法，研究了甲基橙的脱色性能、COD去除性能及机理。结果表明，单独使用超声时几乎观察不到脱色现象。对于400mg/L的甲基橙溶液，芬顿试剂处理30min时脱色率为67.51%，COD去除率为63.15%。在相同操作条件下结合超声场，脱色率和COD去除率分别为86.91%和80.32%。超声和芬顿试剂对甲基橙溶液的降解具有协同作用。芬顿试剂在强酸性条件下对甲基橙溶液的作用是氧化反应，而当pH>5时降解过程为还原过程。