Coupling of Adsorption on Zeolite and V-UV Irradiation for the Treatment of VOC Containing Air Streams: Effect of TiO2 on the VOC Degradation Efficiency
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José Biomorgi
Abstract
We have investigated the efficiency of the coupling of adsorption on a zeolite material (DAY) and UV or V-UV irradiation for the treatment of VOC containing air streams. We have compared the efficiency of photodegradation of two pollutants (1-butanol and toluene) in the absence and in the presence of TiO2 deposited on DAY (DAY/TiO2). Irradiation was performed with two different excimer lamps emitting in the V-UV at 172 nm and in the UV at 308 nm. The gaseous effluent was analyzed on-line at the exit of the photochemical reactor by GC and FTIR. The adsorbents (DAY and DAY/TiO2) were analyzed before and after irradiation by solid state NMR, and the residual organic products remaining on the solids by GC-MS after extraction. The results show that the coupling of adsorption on DAY/TiO2 and V-UVirradiation is highly efficient both for VOC mineralization and adsorbent regeneration. This efficiency results from the synergy between the important contribution of VUV photolysis to the oxidative degradation of the VOC and the photocatalytic effect of TiO2 under V-UV irradiation at the DAY/TiO2 surface, preventing adsorbent fouling as observed in the absence of TiO2. The contribution of TiO2 was particularly remarkable in the case of toluene.
© 2016 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Achieving Stable Biological Oxidation of Erratic Waste Gas Streams by Utilizing Cyclic Adsorption/Desorption Beds
- Production of Titanium Dioxide Nanoparticles and Nanostructures from Dye Wastewater Sludge - Characterisation and Evaluation of Photocatalytic activity
- The Application of Photocatalytic Oxidation in Removing Pentachlorophenol from Contaminated Water
- H2O2/UV-C Treatment of the Economically Important Naphthalene Sulfonate J-Acid: Process Optimization, Kinetic Evaluation and Activated Sludge Inhibition
- Nonthermal Plasma Destruction of Trifluoromethane Using a Dielectric- Packed Bed Reactor
- Investigation of Electric Discharge Sound in Atmospheric Pressure Plasma
- Chlorophenols Contaminated Soil Remediation by Peroxidation
- Synthesis, Characterization and Visible-Light Photocatalytic Activity of La2O3/SnO2 Nanocomposite
- Electrical Discharge Characteristics Using a Bubble in Water and Their Applications to the Water Treatment
- Development of Higher Yield Ozonizer Based on Nano-Seconds Pulsed Discharge
- Ozone Mass Transfer in a Recirculating Loop Semibatch Reactor Operated at High Pressure
- Arc Plasma for Materials Detoxification and their Conversion
- Comparison of Photocatalytic Activities of Commercial Titanium Dioxide Powders Immobilised on Glass Substrates
- Coupling of Adsorption on Zeolite and V-UV Irradiation for the Treatment of VOC Containing Air Streams: Effect of TiO2 on the VOC Degradation Efficiency
- Anaerobic Photocatalytic Oxidation of Carbohydrates in Aqueous Pt/TiO2 Suspensions with Simultaneous Production of Hydrogen
- Using Water Hydrogen Instead of Reducing Gas in the Production of Direct Reduced Iron (DRI)
