Abstract
In the present research work the degradation of acid yellow 17(AY 17) by H2O2/Fe2+ was investigated. The effect of various conditions such as pH value, temperature, conc. of H2O2,Fe2+, conc. of AY 17 were studied. Additionally the scavenging effects of various anions such as Cl-, SO42-, CO32- and HCO3-, on percent degradation of AY 17 were examined. It was found that these anions decrease percent degradation as well as rate of degradation reaction. The optimum conditions were determined as [AY 17] = [Fe2+] = 0.06 mM [H2O2] = 0.9 mM, and pH 3.0 for 60 min of reaction time. It was found that at optimum conditions 89% degradation of AY17 was achieved. The degradation kinetics of AY17 followed pseudo-first-order reaction kinetics. Thermodynamic studies under natural conditions showed positive value Delta H (enthalpy) which indicates the degradation process is endothermic.