title: Electrochemical degradation of waters containing O-toluidine on PbO2 and BDD anodes.
abstract: Electrochemical oxidation of O-toluidine (OT) was studied by galvanostatic electrolysis using lead dioxide (PbO2) and boron-doped diamond (BDD) as anodes. The influence of operating parameters, such as current density, initial concentration of OT and temperature was investigated. Measurements of chemical oxygen demand were used to follow the oxidation. The experimental data indicated that on PbO2 and BDD anodes, OT oxidation takes place by reaction with electrogenerated hydroxyl radicals and is favoured by low current density and high temperature. Furthermore, BDD anodes offer significant advantages over PbO2 in terms of current efficiency and oxidation rate.
authors.affiliation: UR Electrochimie et Environnement, Ecole Nationale d'Ingénieurs de Sfax, BPW 3038 Sfax, Tunisia.
authors.forename: Emna
authors.initials: E
authors.lastname: Hmani
authors.forename: Sourour
authors.initials: S
authors.lastname: Chaabane Elaoud
authors.forename: Youssef
authors.initials: Y
authors.lastname: Samet
authors.forename: Ridha
authors.initials: R
authors.lastname: Abdelhédi
mesh_terms: D001895:Boron / Q000737:chemistry*; D018130:Diamond / Q000737:chemistry*; D004563:Electrochemistry; D004566:Electrodes; D004572:Electrolysis; D007854:Lead / Q000737:chemistry*; D016014:Linear Models; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry; D013696:Temperature; D014052:Toluidines / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D010087:Oxides; D014052:Toluidines; D014874:Water Pollutants, Chemical; D007854:Lead; C047365:lead oxide; D018130:Diamond; C023622:2-toluidine; D001895:Boron; D010100:Oxygen