Abstract
As a continuation of part I [Dyes and Pigments 42 (1999), 123] where modeling of H 2O 2/UV decoloration of monochlorotriazine azo dye C.I. Reactive Red 120 was discussed, this part deals with the study of the effects of the variables on H 2O 2/UV decoloration of reactive vinylsulpone dye C.I. Reactive Blue 19. Influence of chemicals (NaOH, NaCl, urea), added to the dye-bath for dyeing with stated colorant, as well as the influence of reaction conditions (intensity of UV irradiation, concentration of hydrogen peroxide and decoloration time) is described. Influences were determined by the measurement of ecological parameters: absorbance, COD, TOC and TIC.
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