Gas-Phase Destruction of VOCs Using TiO2/UV and TiO2/O3/UV
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Rosana M. Alberici
Abstract
Gas-phase photocatalytic oxidation of different classes of volatile organic compounds (VOCs), including alkanes, ketones, alcohols, chlorinated compounds and aromatic compounds, was investigated using an annular thin film reactor. For all organic compounds tested, catalytic deactivation was not observed, except for toluene (506 ppmv). For this compound, maximum destruction (87%) was maintained during the first 60 min of irradiation, dropping steadily due to catalyst deactivation to 20% after 150 min. The use of ozone as auxiliary agent in the photocatalytic oxidation of toluene and pyridine was also tested. For toluene, when O3 is co-injected into the reactor, deactivation of TiO2 is no longer detectable, and after 150 min of irradiation, 72% of degradation was obtained. When exposing pyridine to this combined treatment, destruction rates raised from 16 to 68%.
© 2017 by Walter de Gruyter Berlin/Boston
Articles in the same Issue
- Masthead
- Contents
- Preface
- Editorial
- Research Articles
- Activity, and Hardness of Supported TiO2 Films on Pyrex and Soda-Lime Glass in Photocatalytic Degradation of Formic Acid for 50 Days
- Endurance Test of TiO2-Based Photocatalytic Oxidation
- Photocatalytic Inactivation of Different Bacteria and Bacteriophages in Drinking Water at Different TiO2 Concentration With or Without Exposure to O2
- Solar Photochemical Detoxification and Disinfection for Water Treatment in Tropical Developing Countries
- Photodegradation of Phenol in Water using Silica-Supported Titania Catalysts
- Photocatalytic Decomposition of Chlorinated Benzaldehydes in Aqueous Solution Using TiO2
- Photocatalytic Reduction and Removal of Uranium From a Uranium- EDTA Solution
- Figures-of-Merit for Advanced Oxidation Technologies: A Comparison of Homogeneous UV/H2O2, Heterogeneous UV/TiO2 and Electron Beam Processes
- Gas-Phase Destruction of VOCs Using TiO2/UV and TiO2/O3/UV
- Mass Transfer Considerations in the Design of Vapor-Phase photocatalytic Reactors
- A Simple Kinetic Model for the Simultaneous Concentration and Intensity Dependencies of TCE Photocatalyzed Destruction
Articles in the same Issue
- Masthead
- Contents
- Preface
- Editorial
- Research Articles
- Activity, and Hardness of Supported TiO2 Films on Pyrex and Soda-Lime Glass in Photocatalytic Degradation of Formic Acid for 50 Days
- Endurance Test of TiO2-Based Photocatalytic Oxidation
- Photocatalytic Inactivation of Different Bacteria and Bacteriophages in Drinking Water at Different TiO2 Concentration With or Without Exposure to O2
- Solar Photochemical Detoxification and Disinfection for Water Treatment in Tropical Developing Countries
- Photodegradation of Phenol in Water using Silica-Supported Titania Catalysts
- Photocatalytic Decomposition of Chlorinated Benzaldehydes in Aqueous Solution Using TiO2
- Photocatalytic Reduction and Removal of Uranium From a Uranium- EDTA Solution
- Figures-of-Merit for Advanced Oxidation Technologies: A Comparison of Homogeneous UV/H2O2, Heterogeneous UV/TiO2 and Electron Beam Processes
- Gas-Phase Destruction of VOCs Using TiO2/UV and TiO2/O3/UV
- Mass Transfer Considerations in the Design of Vapor-Phase photocatalytic Reactors
- A Simple Kinetic Model for the Simultaneous Concentration and Intensity Dependencies of TCE Photocatalyzed Destruction
