Degradation of chlorophenols in aqueous solution by gamma-radiation

摘要

Degradation of chlorophenols (CPs) in aqueous solutions by gamma-radiation was studied.The effect of absorbed dose on degradation,dechlorination and mineralization of CPs were investigated.The results indicated that the degradation of CPs,Cl~ release and mineralization increased with increase in absorbed dose.When the initial concentration was 100mg L-1 and the dosage was 6kGy,the removal efficiencies of CPs were 44.54% for 2-CP,91.46% for 3-CP,82.72% for 4-CP and 93.25% for 2,4-DCP,respectively.The combination of irradiation and H2O2 leads to a synergistic effect,which remarkably increased the degradation efficiency of CPs and TOC removal.The kinetics of CPs during irradiation are also mentioned.