Degradation of dye Malachite Green solution over Fe^III-loaded resin in the presence of H₂O₂

In order to increase the reaction rate of the heterogeneous Fenton-like, the catalyst Fe^III/R was used to catalytically decompose H₂O₂ under visible light for the removal of Malachite Green (MG) in aqueous solution. The effect of initial pH, initial H₂O₂ concentration, initial MG concentration and t-butanol on the reaction rate was also discussed. The result shows that the visible light can enhance the degradation of MG. The experiment of t-butanol shows that the ferryl iron and hydroxyl radical coexist in the system. Repeated use of catalyst does not decrease the removal rate of MG.