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Mass Transfer of Ozone in a Hybrid Ozonation-Membrane System
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Kuan-chung Chen
Published/Copyright:
December 8, 2016
Abstract
The volumetric mass transfer coefficient (KLa) for ozone was determined for various operational conditions in a novel ozonation-ceramic membrane system. Four operational parameters, water flow rate, gas flow rate, inlet gaseous ozone concentration and water temperature were considered. KLa values were higher at high water flow rates, because of the increased turbulence created under high flow conditions. KLa values were higher at high gas flow rates, because of the greater interfacial surface area of the bubbles at high gas flow and the increased turbulence created the air bubbles. Initially the KLa value found for the system increased with the ozone gas concentration, however, at the highest ozone gas concentration studied the KLa value decreased, possibly because the diffusion of gaseous ozone becomes rate limiting under these conditions. The water temperature had little effect on the KLa value over the temperature range from 10 ºC to 30 ºC. A mathematical model was developed to describe the concentration profiles of dissolved ozone in the ozonation-membrane system. Over a wide range of operating conditions there was a good agreement between the predicted and experimental data.
Received: 2007-2-9
Accepted: 2007-4-20
Published Online: 2016-12-8
Published in Print: 2007-7-1
© 2016 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
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- Kinetic Model of the Nitrogen Oxide Removal Process by Ozone
- Dependency of Advanced Oxidation Performance on the Contaminated Water Feed Mode for Ozonation Combined with Electrolysis Using a Two-compartment Electrolytic Flow Cell
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Keywords for this article
ozone;
ceramic membrane;
ultrafiltration;
mass transfer;
mathematical model
Articles in the same Issue
- Simple Models for the Control of Photo-Fenton by Monitoring H2O2
- Kinetic Model of the Nitrogen Oxide Removal Process by Ozone
- Dependency of Advanced Oxidation Performance on the Contaminated Water Feed Mode for Ozonation Combined with Electrolysis Using a Two-compartment Electrolytic Flow Cell
- Actinometry Measurement of Oxygen Dissociation Degree in a Microwave Discharge Plasma and Effect of Electron Energy Distribution Function
- Titanium Oxidation by Microwave Discharge Oxygen Plasma and Relationship with Plasma Parameters
- Preparation of TiO2/C Photocatalyst by Ethanol Modification of Hydrolysed Titania TiO(OH)2 in a Pressure Reactor
- Effect of TiO2 Precursor on the Photoactivity of Fe-C-TiO2 Photocatalysts for Acid Red (AR) Decomposition
- Enhancing the Reuse of Treated Effluent by Photocatalytic Process
- Effect of Reagent Addition Order in Catalyzed H2O2 Propagations (CHP) Treatment Systems
- Mass Transfer of Ozone in a Hybrid Ozonation-Membrane System
- Parametric Survey for Efficient DeNOx by Direct Decomposition of NO Using an Intermittent DBD Generated by a One-Cycle Sinusoidal Power Source
- Efficient NO Removal from Diesel Exhausts Gases by a Combination of Ozone Injection and Exhaust Gas Recirculation
- Duty Factor Effect on Ozone Production Using Dielectric Barrier Discharge Reactor Driven by IGBT Pulse Modulator
- Epoxidation of 1-butene-3-ol with Hydrogen Peroxide under Autogenic and Atmospheric Pressure
- Characterization of Oxygen-Fed Ozonizer Based on Pulsed Streamer Discharge
- Plasma-Catalytic Processes in Gliding Discharges
- New Method for the Synthesis of a Photocatalyst by Using Intercalation of Amines in K2Ti4O9
- Photocatalytic Oxidation of Pharmaceutical compounds: Kinetics and Pathways for Ibuprofen, Clofibric Acid, Diclofenac and Naproxen
- Photocatalytic Decolorization of Reclaimed Water Using Photocatalyst Coated Black Light with Spiral Fluid Flow System
- Characterization of Anodized Titanium Oxide Film and Photocatalytic Decomposition of Methylene Blue with Microcurrent
- Effect of Platinum on the Decomposition Efficiency and Apparent Quantum Yield of Photocatalysis of Isopropanol in an Annular Photoreactor
- Photocatalytic Degradation of 4-Chlorophenol Using TiO2 and Pt-TiO2 Nanoparticles Prepared by Sol-Gel Method
- Photocatalytic Oxidation of H2S on TiO2 and TiO2-ZrO2 Thin Films
- Degradation of Benzo[a]pyrene using TiO2 and Ag-loaded BiVO4 Photocatalysts: Evaluation by the Ames Mutagenicity Assay
- Effects of Operational Factors on the Atrazine Degradation in a Fixed Nano-TiO2 Photocatalytic Reactor
- Preparation of Crystalline Nanosized Titania by Microemulsion: Evaluation of Process Variables
- Synthesis, Characterization and Photocatalytic Activity of CuO-SnO2 Nanocomposite Oxide Photocatalyst
- Factorial Design for the Photodegradation of Chloramphenicol with Immobilized TiO2
- Photocatalytic Hydrogen Production from Diacids and Their Decomposition Over Mixtures of TiO2 and Single Walled Carbon Nanotubes
- Preparation of TiO2 and TiO2/SiO2 Films on Polyester Granules for Photocatalytic Applications
- Ferric Reduction and Oxalate Mineralization with Fered-Fenton Method
- Inactivation of Waterborne Pathogens Using Solar Photocatalysis
- Gaseous Electrical Discharge-Induced Degradation of Organic Compound in Wastewater: UV Irradiation and Ozonation Effect
- Modeling the Diffusion Mechanism and the Reaction Kinetics for the Photocatalytic Degradation of Acid Red 151 Aqueous Solutions by ZnO: Comparison of Linear and Non-Linear Methods
