Abstract Advanced oxidation processes employing sulphate radicals (SO 4 ●– ) are effective techniques to degrade trace organic pollutants in wastewaters. Herein, SO 4 ●– are generated from peroxymonosulphate (PMS) and peroxydisulphate (PDS) via UV-Vis activation for the degradation of Acid blue 129 (AB 129) dye. The activation was performed using four different UV-Vis lamps, TQ-150, HG-Z1, HG-Z2 and HG-Z3, which emit different electromagnetic radiation wavelengths. Degradation of AB 129 was performed at various conditions, including different oxidant concentrations. In order to evaluate the efficiency of the processes, the kinetic rate constant was calculated via a pseudo-first-order kinetics model. In addition, the detailed oxidative degradation pathway of AB 129 induced by SO 4 ●– was determined for the first time to the best of our knowledge. Finally, the ECOSAR model indicates that the toxicity of the treated solution of Acid blue 129 initially increases and then decreases across daphnids, fish, and green algae during degradation.
Raczak et al. (Sun,) studied this question.
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