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Decolourisation of Reactive Blue 28 from Aqueous Solution by Fenton and Photo-Fenton Processes

S. Velmurugan, A. Babuponnusami and B. S. M. Kumar

The decolorization of Reactive blue 28 (RB 28) in aqueous solution has been studied using Fenton (Fe 2+ /H 2 O 2 ) and photo-Fenton (Fe 2+ /H 2 O 2 /UV) processes. This investigation indicates that both these methods can remove the color of RB 28. The e ffects of different system variables namely initial concentration of Fe 2+ , initial concentration of H 2 O 2 , initial pH of solution and initial dye concentration were studied. The increase of initial dye concentra tion decreases the decolorization rate. Under optimum conditions, the photo-Fenton process was found to be more efficient than Fenton process.