Treatment of Chlorpyrifos Pesticide in Water Using Nano Scales Zero Valent Iron (nZVI)

Abstract

This study deals with degradation efficiency of chlorpyrifos by nano zerovalent iron (nZVI) for effective remediation of water contaminated with chlorinated pesticide. We prepared the nZVI and the effects of pH, time and iron dosage on chlorpyrifos degradation were studied. Chlorpyrifos degradation percentage was increased with increasing nZVI treatment amount and reaction time. The experimental results showed that chlorpyrifos was completely removed by nZVI, chlorpyrifos solution at 25 mg/L was efficiency removed by nZVI within 6 hours, at initial solution pH 3, nZVI dose of 500 mg/L. These results suggested that nZVI could be effectively applied to degradation of chlorpyrifos pesticides in the aqueous environments