Degradation of crystal violet by heterogeneous Fenton-like reaction using Fe/Clay catalyst with H2O2

In this study,the heterogeneous fenton-like degradation of crystal violet (cv) in water was investigated over iron containing clay prepared by impregnation. the sample was characterized for physical and chemical properties by xrd,sem and ftir measurements. the effects of various operating parameters like metal loading in the catalyst variety,initial ph,hydrogen peroxide concentration and catalyst loading on the removal of dye,color and cod from an aqueous solution were studied at atmospheric pressure. the catalytic reaction obeyed first order kinetics. although the fe/clay showed good performance for oxidation degradation of the dye,especially high catalytic activity with a wide ph range,the best catalytic results were achievable with fe/clay loading of 0.75 g/l with about 99% cod and 99% decolorization was achieved within 10 min treatment. it was also observed that catalytic behaviour could be reproduced in consecutive experiments with low iron leaching.