DEGRADATION OF ATRAZINE IN AQUEOUS SOLUTION BY GAS-LIQUID HYBRID DISCHARGE

Degradation of Atrazine in aqueous solution was conducted in a gas-liquid hybrid discharge reactor. The effect of output power,pH value and Fe2+ concentration on the degradation efficiency of Atrazine was examined. The initial investigation on the degradation kinetics of atrazine was conducted. The results revealed that the degradation efficiency of Atrazine increased with increasing output power and decreasing pH value,respectively. Under the same experimental conditions,the degradation efficiency of Atrazine increased dramatically in the presence of Fe2+. Furthermore,the degradation efficiency of atrazine increased with increasing Fe2+ concentration at the concentration of 0.2,0.6,2.0 mmol·l -1. The degradation of Atrazine by gas-liquid hybrid discharge fitted first-order reaction kinetics. The degradation intermediates of Atrazine were produced by dealkylation,alkylic-oxidation,dechlorination and dechlorination-oxidation processes.