Abstract
In this study, the decolorization of an azo dye Orange G (OG) by homogeneous advanced oxidation processes was investigated in the presence of persulfate (S2O82−) and periodate (IO4−) under UV irradiation at 254 nm in aqueous solution. The obtained results showed that the decolorization of OG increased in the UV/S2O82− and UV/IO4− systems compared to the UV system alone. In both cases (UV/S2O82− and UV/IO4−), the increase in the oxidant concentration enhanced the dye decolorization rate. However, a higher degradation activity was observed when IO4− was added to the solution.
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