title: Degradation of drugs in water with advanced oxidation processes and ozone.
abstract: The aim of this paper is to assess the degradation of a mixture of ibuprofen and clofibric acid and to study the mineralization and toxicity following ozone treatment. To this end, a comparison is presented of the experimental results obtained from ozone treatment using atmospheric air as the feed gas (Experiment I, [O3] = 15 gN/m(3)), with and without addition of H2O2, and those obtained under the same conditions but using concentrated oxygen as the feed gas, obtained by pressure swing adsorption technology (Experiment II, [O3] = 200 gN/m(3)). All tests were conducted using a pilot scale reactor. Under (Experiment II) conditions, degradation exceeded 99% and up to 60% mineralization was achieved for initial compound concentrations, and hydraulic retention time was reduced by 75% compared to (Experiment I). The results of toxicity tests show through increasing the production of ozone gas in (Experiment II), toxicity was eliminated at initial study concentrations of ≤1 mg/l for all treatment times studied.
authors.affiliation: Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, Polígono Rio San Pedro s/n, 11510 Puerto Real, Cádiz, Spain. Electronic address: maria.quero@uca.es.
authors.forename: Maria
authors.initials: M
authors.lastname: Quero-Pastor
authors.affiliation: Ingeniería del Ozono, S.L., Conde de Guevara 5, nave 2, Polígono Industrial El Palmar, El Puerto de Santa María 11500, Cádiz, Spain.
authors.forename: Alvaro
authors.initials: A
authors.lastname: Valenzuela
authors.affiliation: Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, Polígono Rio San Pedro s/n, 11510 Puerto Real, Cádiz, Spain.
authors.forename: Jose M
authors.initials: JM
authors.lastname: Quiroga
authors.affiliation: Department of Environmental Technologies, Faculty of Marine and Environmental Sciences, University of Cadiz, Polígono Rio San Pedro s/n, 11510 Puerto Real, Cádiz, Spain.
authors.forename: Asuncion
authors.initials: A
authors.lastname: Acevedo
mesh_terms: D000327:Adsorption; D000388:Air; D002995:Clofibric Acid / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D007052:Ibuprofen / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry; D010126:Ozone / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
chemical_list: D016877:Oxidants; D014874:Water Pollutants, Chemical; D002995:Clofibric Acid; D010126:Ozone; D006861:Hydrogen Peroxide; D010100:Oxygen; D007052:Ibuprofen
keywords: AOP; Drugs; Mineralization; Ozone; Toxicity