title: Chlorination and chloramination of aminophenols in aqueous solution: oxidant demand and by-product formation.
abstract: Chlorination and monochloramination of aminophenols (AP) were carried out in aqueous solution at 25°C and at pH 8.5. Oxidant demand and disinfection by-product formation were determined in excess of oxidant. Experiments have shown that chlorine consumption of AP was 40-60% higher than monochloramine consumption. Compared with monochloramination, chlorination of AP formed more chloroform and haloacetic acids (HAA). Dichloroacetic acid was the major species of HAA. Chloroform and HAA represented, respectively, only 1-8% and 14-15% of adsorbable organic halides (AOX) by monochloramination but up to 29% and 39% of AOX by chlorination.
authors.affiliation: a Institut de Chimie des Milieux et Matériaux de Poitiers , Université de Poitiers , CNRS UMR 7285, Equipe Eaux-Géochimie Organique-Santé, Ecole Nationale Supérieure d'Ingénieurs de Poitiers, 1 rue Marcel Doré, TSA 41105, 86073 Poitiers Cedex 9, France.
authors.forename: O Abou
authors.initials: OA
authors.lastname: Mehrez
authors.forename: F
authors.initials: F
authors.lastname: Dossier-Berne
authors.forename: B
authors.initials: B
authors.lastname: Legube
mesh_terms: D000627:Aminophenols / Q000737:chemistry* / Q000302:isolation & purification*; D002713:Chlorine / Q000737:chemistry; D054879:Halogenation; D016877:Oxidants / Q000737:chemistry; D010084:Oxidation-Reduction; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods*
chemical_list: D000627:Aminophenols; D016877:Oxidants; D014874:Water Pollutants, Chemical; D014867:Water; D002713:Chlorine
keywords: AOX; DBP; aminophenol; chlorine; monochloramine