Kinetic and thermodynamic study of oxidative degradation of acid yellow 17 dye by Fenton-like process: Effect of HCO3−, CO32−, Cl− and SO42− on dye degradation

Abstract

We report here the degradation of AY-17 dye using Fenton-like process (H2O2/Fe3+). The maximum degradation (83%) of AY17 dye is achieved at pH 3 in 60 min, with optimum concentrations of AY 17 (0.06 mM), H2O2 (0.9 mM), and Fe2+ (0.06 mM). The scavenging effects of HCO3−, CO32−, Cl− and SO42− on dye degradation are also examined. The activation energy (Ea), activation enthalpy (ΔH*), and activation entropy (ΔS*) are calculated for the dye degradation using pseudo-first-order kinetics at various temperature.