Abstract
The photodegradation of five dyes, C. I. reactive red 2, C. I. reactive blue 4, C. I. reactive black 8, C. I. basic red 13 and C. l. basic yellow 2, were studied in an U V / Fe ( III ) - hydroxy system using a 30W UV disinfection lamp ( λ max = 253.7nm). Photodegradation for C.II. reactive 2, C. I. reactive blue 4 and C. I. basic red 13 were pseudo-first order reactions while the others were pseudo-zero order reactions. The effects of the initial concentrations of the dyes on reaction kinetics were studied.
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