title: Advanced oxidation processes in azo dye wastewater treatment.
abstract: The chemical degradation of synthetic azo dyes color index (C.I.) Acid Orange 7, C.I. Direct Orange 39, and C.I. Mordant Yellow 10 has been studied by the following advanced oxidation processes: Fenton, Fenton-like, ozonation, peroxone without or with addition of solid particles, zeolites HY, and NH4ZSM5. Spectrophotometric (UV/visible light spectrum) and total organic carbon measurements were used for determination of process efficiency and reaction kinetics. The degradation rates are evaluated by determining their rate constants. The different hydroxyl radical generation processes were comparatively studied, and the most efficient experimental conditions for the degradation of organic azo dyes solutions were determined.
authors.affiliation: Department of Polymer Engineering and Organic Chemical Technology, University of Zagreb, Croatia.
authors.forename: Sanja
authors.initials: S
authors.lastname: Papić
authors.forename: Natalija
authors.initials: N
authors.lastname: Koprivanac
authors.forename: Ana Loncarić
authors.initials: AL
authors.lastname: Bozić
authors.forename: Dinko
authors.initials: D
authors.lastname: Vujević
authors.forename: Savka Kusar
authors.initials: SK
authors.lastname: Dragicević
authors.forename: Hrvoje
authors.initials: H
authors.lastname: Kusić
authors.forename: Igor
authors.initials: I
authors.lastname: Peternel
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D019149:Bioreactors; D004396:Coloring Agents / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry; D005296:Ferrous Compounds / Q000737:chemistry; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000009:adverse effects / Q000517:prevention & control*; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D005290:Ferric Compounds; D005296:Ferrous Compounds; D007220:Industrial Waste; C020748:ferrous sulfate; C024823:ferric sulfate; D010126:Ozone; D006861:Hydrogen Peroxide