Anodic oxidation of chlorpyrifos in aqueous solution at lead dioxide electrodes

Fenton and solar photo-Fenton processes for the removal of chlorpyrifos insecticide in wastewater

“…It should be noted that the chlorpyrifos oxidation pathway using different AOPs, such as photo-Fenton (Murillo et al, 2010), ozonation (Meng et al, 2010), and electrochemical (Samet et al, 2010) AOPs, has been investigated. The main identified by-product is chlorpyrifos-oxon.…”

Electrocatalytic performance of PbO₂ films in the degradation of dimethoate insecticide

“…It has been proven to be a promising and attractive technique for the effective oxidation of wastewater containing organic compounds (Chen, 2004;Fernandes et al, 2004;Sanroman et al, 2004). Many studies have demonstrated that the complete mineralisation of organics can be obtained with high efficiency by direct electro-oxidation using only high oxygen overvoltage anodes such as SnO 2 (Belhadj-Tahar and Savall, 1998;Comninellis and Pulgarin, 1993;Polcaro et al, 1999Stucki et al, 1991, PbO 2 (Andrade et al, 2007;Feng et al, 1995;Feng and Li, 2003;Martinez-Huitle et al, 2004a;Panizza and Cerisola, 2008;Quiroz et al, 2005;Samet et al, 2010a) and boron-doped diamond (BDD) anodes (Bechtold et al, 2006;Iniesta et al, 2001;Panizza and Cerisola, 2005;Samet et al, 2010b;Weiss et al, 2008). For example, some studies reported that the current efficiencies obtained with Si/BDD in oxidising 4-chlorophenol (Gherardini et al, 2001), 2-naphthol (Panizza andCerisola, 2004), chloranilic acid (Martinez-Huitle et al, 2004a), and chlorpyrifos pesticide (Samet et al, 2010b) were higher than those obtained with PbO 2 anodes.…”

Comparative studies on the electro-catalytic oxidation performance of surfactant–carbon nanotube-modified PbO2 electrodes

“…In view of the customary resistance of the effluents to the biological degradation, various advanced oxidation processes (AOPs) have received increasing attention as alternative methods [3], such as ozonation, fenton oxidation, photo-catalytic oxidation, and electro-catalytic oxidation. Electro-catalytic oxidation technology has become a promising method for wastewater treatment because of its simplicity, easy control, strong oxidation performance, and environmental compatibility [4][5][6][7].…”

“…It is well known that the efficiency of oxidation of organic pollutants during electro-catalytic oxidation process is strongly dependent on the material of the electrodes [7,8]. Thus, a wide variety of electrode materials such as graphite [8], platinum [9], IrO 2 [10], RuO 2 [11], SnO 2 [12], PbO 2 [3] and boron-doped diamond (BDD) [13] have been investigated in literature. Among all the materials, PbO 2 and BDD are the most attractive electrodes because of their high oxygen overpotential [14].…”