title: Nitrogen-containing organic compounds: Origins, toxicity and conditions of their photocatalytic mineralization over TiO2.
abstract: Sustainable water management remains a global concern to meet the food needs of industrial and agricultural activities. Therefore, pollution abatement techniques, cheap and environmentally, are highly desired and recommended. The present review is devoted to the origin and the toxicity of nitrogen-containing organic compounds in water. The progress made in removing these pollutants, in recent years, is addressed. However, a prominent place is given to the photocatalytic degradation process using the TiO2as a semiconductor, the conditions for good mineralization and especially the factors influencing it. The parameters that impact the performance of this method are the pH, the temperature, the reactor used, the light, the concentration of the pollutant, the amount of catalyst, etc. Up to now, the importance of one parameter relative to another has not been established because in the context of the photocatalytic degradation, certain parameters are often tightly coupled. Consequently, the mineralization is dependent on the initial degree of oxidation of nitrogen atom contained in the pollutant to be degraded. The hydroxyl nitrogen is primarily converted into nitrate ions (NO3-), while the amides and the primary amines are converted into ammonium ions (NH4+).
authors.affiliation: Laboratoire de Chimie des Eaux (LCE) - Ecole Normale Supérieure d'Abidjan, 08 BP 10 Abidjan 08, Côte d'Ivoire; ICPEES-UMR 7515 CNRS - Université de Strasbourg, Antenne de Saint-Avold, Rue Victor Démange, 57500 Saint-Avold, France. Electronic address: bambdrissa@yahoo.fr.
authors.forename: Drissa
authors.initials: D
authors.lastname: Bamba
authors.affiliation: Laboratoire de Chimie des Eaux (LCE) - Ecole Normale Supérieure d'Abidjan, 08 BP 10 Abidjan 08, Côte d'Ivoire. Electronic address: mamecoul2002@yahoo.fr.
authors.forename: Mariame
authors.initials: M
authors.lastname: Coulibaly
authors.affiliation: ICPEES-UMR 7515 CNRS - Université de Strasbourg, Antenne de Saint-Avold, Rue Victor Démange, 57500 Saint-Avold, France. Electronic address: didier.robert@univ-lorraine.fr.
authors.forename: Didier
authors.initials: D
authors.lastname: Robert
mesh_terms: D002384:Catalysis; D009584:Nitrogen / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D014874:Water Pollutants, Chemical; C009495:titanium dioxide; D014025:Titanium; D009584:Nitrogen
keywords: Dyes; Pesticides; Photocatalysis; Toxicity; Water treatment