title: Application of experimental design methodology to the decolorization of Orange II using low iron concentration of photoelectro-Fenton process.
abstract: The influence of different variables in the photoelectro-Fenton process for the decolorization of Orange II was investigated using an experimental design methodology. The variables considered in this study include electrical current, Fe(3+) concentration, H(2)O(2) concentration and initial pH. Response factors were decolorization efficiencies after 30, 90 and 120 min of reaction time, for an initial dye concentration of 100 mg/L. The positive and negative effects of variables and the interaction between variables on color removal were determined. The response surface methodology models were derived based on the decolorization efficiency results and the response surface plots were developed accordingly.
authors.affiliation: Department of Environmental Engineering, Wuhan University, Wuhan 430079, China. eeng@whu.edu.cn
authors.forename: Hui
authors.initials: H
authors.lastname: Zhang
authors.forename: Yanli
authors.initials: Y
authors.lastname: Li
authors.forename: Xin
authors.initials: X
authors.lastname: Zhong
authors.forename: Xiaoni
authors.initials: X
authors.lastname: Ran
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D001557:Benzenesulfonates / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry; D004563:Electrochemistry; D005290:Ferric Compounds / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000517:prevention & control; D007501:Iron / Q000737:chemistry*; D008956:Models, Chemical; D010084:Oxidation-Reduction; D013783:Textile Industry / Q000379:methods; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D001391:Azo Compounds; D001557:Benzenesulfonates; D004396:Coloring Agents; C045076:Fenton's reagent; D005290:Ferric Compounds; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron; C014722:2-naphthol orange