Degradation mechanism of Reactive Orange 113 dye by H2O2/Fe2+ and ozone in aqueous solution

The oxidative degradation of azo dye Reactive Orange 113 aqueous solution by H2O2/Fe2+ and ozone was investigated. The full decolorization is attained during the first minutes of oxidation process by H2O2/Fe2+ and ozone. The complete mineralization of aqueous solutions of Reactive Orange 113 dye cannot be achieved even under the optimal reaction conditions. Ozonation appeared more effective in comparison with Fenton's process. A tentative pathway for the oxidative degradation of Reactive Orange 113 dye were postulated.