期刊名称：Journal of Materials and Environmental Science
印刷版ISSN：2028-2508
出版年度：2014
卷号：5
期号：3
页码：667-674
出版社：University of Mohammed Premier Oujda
摘要：Decolorization of aqueous solutions co ntaining an azo dye (Reactive Yellow 84) was achieved by advanced oxidative process using Fenton reagent. The optimum amounts of Fenton reagent was 25 mg/L of Fe2+and 250 mg/L of H2O2for an initial Reactive Yellow 84 concentration at 60 mg/L. The initial Fe2+concentration in the Fenton reagent affected the degradation efficiency, rate and kinetics. The ratio of Fe2+/H2O2is found equal to 0.1 to give the best result for the decolorization efficiency. The Fenton process was effective under pH 3 and the decolorization efficiency o f Reactive Yellow 84 attained 85% for 20 min reaction time. Kinetics decolorization of RY84 followed pseudo second-order reaction. The reaction characteristic of oxidative reaction for decolorization efficiency process was evaluated as thermodynamically spontaneous under natural conditions. The value of activation energy is determined and is equal to 16.78 kJ/mol, this lo w value may show that the oxidative reaction proceeds with low energy barrier
