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Modeling of Chlorpyrifos Degradation by Tio2 Photo Catalysis Under Visible Light Using Response Surface Methodology Publisher



Naddafi K1, 2 ; Nabizadeh R1, 2 ; Silvamartinez S3 ; Shahtaheri SJ4, 5 ; Yaghmaeian K1, 5 ; Badiei A6 ; Amiri H1
Authors

Source: Desalination and Water Treatment Published:2018


Abstract

Chlorpyrifos has been classified by the Stockholm Convention as priority pesticide under consideration because of its toxicological profile that succinctly characterizes the toxicological and adverse effects on health. TiO2 photo catalysis of aqueous chlorpyrifos (CPF) solution using a raceway pond, containing total nitrogen and total phosphorus, has been modeled using response surface methodology (RSM). The RSM was used to improve the optimum condition of CPF degradation using R software. The ANOVA, p-value of lack of fit > 0.05 indicated that the equation was well-fitted. 71.09 ± 1.9% of removal was obtained for CPF (2.84 ppm), time (55.15 min) and dosage of TiO2 (17.07 mg L–1) under TiO2 visible photo catalysis compared to the 25.6 ± 0.25% by visible photolysis under similar experimental conditions. Nitrogen and phosphorus showed negligible interference on CPF degradation. © 2018 Desalination Publications. All rights reserved.
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