title: [Study on ultrasound-assisted decolorization of methyl orange with Fenton reagent].
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.
authors.affiliation: Institute of Environmental Science College of Chemistry & Chemical Engineering, Chongqing University, Chongqing 400044, China.
authors.forename: Chang-Yuan
authors.initials: CY
authors.lastname: Tao
authors.forename: Zuo-Hua
authors.initials: ZH
authors.lastname: Liu
authors.forename: Xiao-Hong
authors.initials: XH
authors.lastname: Li
authors.forename: Jun
authors.initials: J
authors.lastname: Du
authors.forename: Xiu-Jie
authors.initials: XJ
authors.lastname: Si
authors.forename: Jun
authors.initials: J
authors.lastname: Zhu
mesh_terms: D001391:Azo Compounds / Q000032:analysis / Q000737:chemistry*; D004396:Coloring Agents / Q000032:analysis / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D014465:Ultrasonics; D014865:Waste Disposal, Fluid / Q000379:methods*; D014877:Water Pollution, Chemical / Q000032:analysis*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; C045076:Fenton's reagent; C100258:methyl orange; D006861:Hydrogen Peroxide; D007501:Iron