Kinetic study of decolorization of Reactive Yellow 84 by potassium peroxydisulfate

The decolorization of Reactive Yellow 84 (RY84) was investigated by potassium peroxydisulfate in laboratory scale experiments. The effects of operating parameters, such as, the initial concentrations of potassium peroxydisulfate and RY84 were investigated. The increase of initial peroxydisulfate concentration increases the decolorization rate. This increase is due to the enhanced production of sulfate and hydroxyl radicals. The decrease in decolorization efficiency with increasing initial RY84 concentration has been observed. The results showed that the maximum decolorization efficiency (97%) was achieved with 4mM potassium peroxydisulfate, 5 ppm RY84 and temperature 30oC. The decolorization kinetic of RY84 followed second-order

Keywords:

Advanced oxidation process , Decolorization , Kinetics , Potassium peroxydisulfate , Reactive Yellow 84