Current Science

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In the present study, two dimensionally stable anodes, Ti/IrO2 and Ti/IrO2-SnO2, have been developed in order to degrade chlorpyrifos in chloride-free environment. The chemical oxygen demand (COD) results revealed that Ti/IrO2-SnO2 electrode had degraded 78.2% of COD after 6 h of electrolysis. COD removal followed pseudo second-order kinetics. Radical scavenger studies confirmed that the hydroxyl radical can be the major factor responsible for degrading chlorpyrifos. The anodic charge decreased from 153.76 to 145.15 mC while accelerated lifetime showed 7 h increment, indicating the higher stability of Ti/IrO2- SnO2 anode. The qualitative identification of oxides of both electrodes was studied by X-ray diffraction. Roughness parameters and topography were determined using AFM images.

Keywords

Chlorpyrifos, Chloride Free Environment, Dimensionally Stable Anode.
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