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Erscheinungsjahr
- 2014 (3) (entfernen)
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- Beitrag zu einem Tagungsband (2)
- Vortrag (1)
Schlagworte
- Carbotrap 300 (1)
- Emission test chamber (1)
- Ethanol (1)
- Methanol (1)
- Photocatalysis (1)
- Thermal desorption (1)
- Titanium dioxide (1)
- UV-light (1)
- VVOC (1)
- Volatile organic compounds (1)
Eingeladener Vortrag
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Photocatalytical degradation of selected volatile organic compounds in emission test chambers
(2014)
This work focuses on the photocatalytical degradation of selected volatile organic compounds (toluene, butyl acetate, phenol and limonene) under UV-light and blue LED-light (λ = 444 nm) at different relative humidities. Ceramic tiles coated with titanium dioxide were used as photocatalytical active material. The experiments were performed in 20 l emission test chambers with two different kinds of pollutant supply. Toluene was the compound with the highest degradation rate in all performed experiments. A degradation rate of 24 % was obtained under blue LED-light and a relative humidity of (50 ± 5)% and a degradation rate up to 80 % was obtained under UV-light in dry air.
Photocatalytical degradation of selected volatile organic compounds in emission test chambers
(2014)
A method for the determination of very volatile organic compounds (VVOC) in air was developed and successfully tested for methanol and ethanol. Carbotrap 300 (R) (a multi-bed tube using Carbopack C (R), Carbopack B (R) and Carbosive SIII (R)) was selected as sorption material for thermal desorption and tested for its suitability for emission test chamber measurements. The adsorption behaviour and the chromatographic results are influenced negatively by spiking aqueous solutions on the adsorption medium for calibration purposes. The latter effect can be reduced by blowing dry air across the adsorbent to remove the adsorbed water. Detection and quantification limits were determined for a GC-FID system and compared to GC-MS. The applicability of the method was tested with a methanol eliminating silane modified polymeric adhesive (SMP-adhesive for parquet) in an emission test chamber.