Degradation of Bisphenol-A by Ozonation
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Isil Gultekin
Abstract
The study reports the degradation of an endocrine disrupting compound- bisphenol A (BPA) by ozonation at slightly acidic pH with emphasis on the operational parameters (e.g. BPA concentration, ozone addition and mass transfer rate, contact time), reaction kinetics, rate constants and oxidation byproducts. It was found that the rate of BPA decay (pseudo-first order with respect to concentration) was accelerated with increased ozone addition rate and decreased BPA initial concentration. The profile of aqueous ozone concentration was such that it remained constant during 1-3 min of contact and increased thereafter. The bimolecular reaction rate constant was estimated using the steady state concentration of ozone and the value found was in good agreement with those reported in the literature for similar pH. Total mineralization was most rapid before complete conversion of BPA and much slower thereafter, implying low reactivity of the intermediate products with ozone. Mineralization was enhanced by alkalinization to pH 10.8, which facilitated the overall degradation process via the formation of radical species that were less selective than ozone. Byproducts of oxidation in successive order of formation were p-tert-butylphenol, hydroquinone, methyl-dihydrobenzofuran and n-butyl acetate, none of which are classified as endocrine disruptors.
© 2016 by Walter de Gruyter Berlin/Boston
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- Degradation of Pesticide by Photocatalytic Ozonation Process and Study of Synergistic Effect by Comparison with Photocatalysis and UV/Ozonation Processes
- Reactivity of Peroxyl Radicals towards Hydrogen Donors: A Kinetic ESR Investigation
- Removal of SO2 by Gas-Phase Oxidation Using DBD Micro-gap Discharge Plasma
- Hydrothermal Preparation and Photocatalytic Performance of (I2)n Sensitized and I(V) Doped TiO2 Supported on SiO2
- Photocatalytic Mineralization of Azo Dyes Using Nanostructure ZnO Thin Film Coated on Glass Bead
- Removal of NO2 Produced by Corona Discharge in Indoor Air Cleaning
- Degradation of Bisphenol-A by Ozonation
- Phenolic Acids Ozonation: QSAR Analysis and pH Influence on the Selectivity of Ozone
- Integrated Strategy for Treatment of Winery Wastewaters Using Flocculation, Ozonation and Fenton’s Oxidation
- Photocatalytic Degradation of Tetracycline Hydrochloride in Aqueous Solution at Ambient Conditions Stimulated by Gold Containing Zinc- Titanium Oxide Films
Articles in the same Issue
- The Kinetics of Semiconductor Photocatalysis in Activity-Indicator Films
- Degradation of n-Butyl tin Chlorides in Waters. A Comparative Assessment of the Process by Photo-assisted and Chemical- treatment Methods
- Comparison of Emerging NSAID Pollutants Degradation in Aqueous Media by O3/UV-VIS Processes
- Liquid Phase Epoxidation of Allylic Compounds with Hydrogen Peroxide at Autogenic and Atmospheric Pressure over Mesoporous Ti- MCM-48 Catalyst
- Scope of Metal Loaded Microporous Zeolite-Y as Catalyst in Ozone Initiated Oxidation of n-hexadecane
- Solar Photocatalytic Process (TiO2 and Photo-Fenton) to Detoxify Effluents from Water-washed Spray Booths
- Detailed Investigation on the Effect of Washing TiO2 Prepared from Tisalts Flocculated Wastewater Sludge
- Synthesis, Characterization and Photocatalytic Activity of Ag-doped TiO2 Film
- Degradation of Pesticide by Photocatalytic Ozonation Process and Study of Synergistic Effect by Comparison with Photocatalysis and UV/Ozonation Processes
- Reactivity of Peroxyl Radicals towards Hydrogen Donors: A Kinetic ESR Investigation
- Removal of SO2 by Gas-Phase Oxidation Using DBD Micro-gap Discharge Plasma
- Hydrothermal Preparation and Photocatalytic Performance of (I2)n Sensitized and I(V) Doped TiO2 Supported on SiO2
- Photocatalytic Mineralization of Azo Dyes Using Nanostructure ZnO Thin Film Coated on Glass Bead
- Removal of NO2 Produced by Corona Discharge in Indoor Air Cleaning
- Degradation of Bisphenol-A by Ozonation
- Phenolic Acids Ozonation: QSAR Analysis and pH Influence on the Selectivity of Ozone
- Integrated Strategy for Treatment of Winery Wastewaters Using Flocculation, Ozonation and Fenton’s Oxidation
- Photocatalytic Degradation of Tetracycline Hydrochloride in Aqueous Solution at Ambient Conditions Stimulated by Gold Containing Zinc- Titanium Oxide Films
