title: Solar activated ozonation of phenol and malic acid.
abstract: The effect that sunlight has on the degradation rate of two model organic compounds, phenol and malic acid, by ozone is studied. The effect seems to be due to both direct light absorption (300-320 nm photons) by ozone, which produces the pollutant degradation, and light absorption by reaction intermediates. The presence of such a light notably improves the reactivity of ozone toward the organic species, leading to a faster and complete mineralization even at large initial total organic carbon values. The use of artificial sunlight (Xe lamp) is also explored. Finally, the simultaneous presence of sunlight and other ozone degradation catalyst like transition metal ions is studied, showing the beneficial effect of such a combination.
authors.affiliation: Departament de Química, Universitat Autònoma de Barcelona, Edifici Cn, 08193 Bellaterra, Cerdanyola del Vallés, Spain.
authors.forename: Laura
authors.initials: L
authors.lastname: Sánchez
authors.forename: Xavier
authors.initials: X
authors.lastname: Domènech
authors.forename: Juan
authors.initials: J
authors.lastname: Casado
authors.forename: José
authors.initials: J
authors.lastname: Peral
mesh_terms: D000042:Absorption; D002384:Catalysis; D004202:Disinfectants / Q000737:chemistry*; D008293:Malates / Q000737:chemistry*; D010083:Oxidants, Photochemical / Q000737:chemistry*; D010126:Ozone / Q000737:chemistry*; D019800:Phenol / Q000737:chemistry*; D013472:Sunlight; D018508:Water Purification / Q000379:methods*
chemical_list: D004202:Disinfectants; D008293:Malates; D010083:Oxidants, Photochemical; D019800:Phenol; D010126:Ozone; C030298:malic acid