Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2012 Vol: 4 Issue: 7

Electrochemical degradation of imazalil and pyrimethanil by anodic oxidation on boron-doped diamond


The electrochemical oxidation of mixture pesticides imazilil and pyrimethanil pesticides has been studied on boron- doped diamond (BDD) electrodes on acid medium by bu lk electrolysis. The influences of current density, conductive electrolyte, pH, and concentration of pesticide wer e investigated. GC and chemical oxygen demand measu rements were conducted to study the reaction kinetics of pe sticides mineralization. The best obtained conditio ns for COD removal on the BDD anode to degrade imazalil and py rimethanil solutions include operating at 50 mA cm -2 and 25 ± 3 °C. The experimental results showed that the el ectrochemical process was suitable for almost compl etely removing COD, due to the production of hydroxyl rad icals on the diamond surface (OH • ) and other electrogenerated oxidants (Cl - , ClO - ).