Promoted Wet Oxidation of the Azo Dye Orange II under Mild Conditions

摘要: Wet oxidation (WO) reactions of the azo dye Orange II were carried out under moderate conditions (T = 130−190 °C, pH 2, poxygen 1.0 MPa) with addition a promoter and FeIISO4. The promoted wet (PWO) leads to faster decay compared unpromoted WO experiments. decomposition can be described by first-order kinetics over temperature range. dependency an Arrhenius relationship. A reduction in TOC 70% was achieved at 160 190 °C. influence established results indicate strong on rates show changing reaction order. Whereas nonpromoted zero-order kinetics, changes kinetics. combined rate law adapted for experimental describe decomposition. initial concentration ...