Original Articles: 2010 Vol: 2 Issue: 4
Photocatalytic Degradation of diazinic ring- containing azo dye (Direct Yellow 12) by Photo-Fenton Reagent
Photocatalytic decolourization of dyes using AOP is a new concern among researchers since it offers an attractive method for decolorization of dyes and breaks them into simple mineral form. The oxidation using Fenton Reagent has been found to be a promising treatment method for the effective decolorization and degradation of dyes. A detailed investigation of photodegradation of Direct Yellow-12 (DY12) using H2O2/Fe+2 has been carried out. Results indicate that dye degradation is dependent on concentration of Dye (DY12), photocatalyst (Fenton reagent), H2O2 and pH of the experimental solutions. The optimum conditions for the photobleaching of dye had been established. The kinetics of degradation of the dye in the dilute aqueous solutions follows first order kinetics. The results indicated that the treatment of the dye by Photo-Fenton reagent was efficient at optimum conditions.