title: A comparative study of the removal of 3-indolebutyric acid using advanced oxidation processes.
abstract: In this study, advanced oxidation technologies, namely Fenton Process (FP), Fenton-Like Process (FLP), ozonation (O3) and O3/H2O2 processes, were applied to synthetic wastewater containing 3-indolebutyric acid (IBA). The effectiveness of each process was investigated at different pH values, Fe(+2), Fe(+3), O3 and H2O2 concentrations with respect to the removal efficiencies for chemical oxygen demand (COD) and total organic carbon (TOC). The best removal efficiencies were seen at pH 3 and 2 mM Fe concentration in both FP and FLP, in which the optimum H2O2 concentrations were 6 mM for FP and 10 mM for FLP. Optimum process conditions were pH 12 for the O3 process, pH 9 for the O3/H2O2 process and 1:1 O3/H2O2 molar ratio. The highest COD removal efficiency was 86 percent, obtained in the O3/H2O2 process and the highest TOC removal efficiency was obtained at 77 percent in the FP.
authors.affiliation: Uludag University, Engineering and Architecture Faculty, Department of Environmental Engineering, Gorukle, Bursa 16059, Turkey. akal@uludag.edu.tr
authors.forename: Seval Kutlu Akal
authors.initials: SK
authors.lastname: Solmaz
authors.forename: Hilal
authors.initials: H
authors.lastname: Azak
authors.forename: Tulay
authors.initials: T
authors.lastname: Morsunbul
mesh_terms: D006861:Hydrogen Peroxide; D006863:Hydrogen-Ion Concentration; D007211:Indoles / Q000737:chemistry*; D007501:Iron; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010126:Ozone; D013997:Time Factors; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: C045076:Fenton's reagent; D007211:Indoles; D014874:Water Pollutants, Chemical; C014612:indolebutyric acid; D010126:Ozone; D006861:Hydrogen Peroxide; D007501:Iron