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- W2013224087 abstract "The degradation of volatile organic compounds in a commercially available non-thermal plasma based air purifying system was investigated. Several studies exist that interrogate the degradation of VOCs in closed air systems using a non-thermal plasma combined with a heterogeneous catalyst. For the first time, however, our study was performed under realistic conditions (normal indoor air, 297.5 K and 12.5 g m−3 water content) on an open system, in the absence of an auxiliary catalyst, and using standard operating air flow rates (up to 320 L min−1). Cyclohexene, benzene, toluene, ethylbenzene and the xylene isomers were nebulized and guided through the plasma air purifier. The degradation products were trapped by activated charcoal tubes or silica gel tubes, and analyzed using gas chromatography mass spectrometry. Degradation efficiencies of 11 ± 1.6% for cyclohexene, <2% for benzene, 11 ± 2.4% for toluene, 3 ± 1% for ethylbenzene, 1 ± 1% for σ-xylene, and 3 ± 0.4% for m-/ρ-xylene were found. A fairly wide range of degradation products could be identified. On both trapping media, various oxidized species such as alcohols, aldehydes, ketones and one epoxide were observed. The formation of adipaldehyde from nebulized cyclohexene clearly indicates an ozonolysis reaction. Other degradation products observed suggests reactions with OH radicals. We propose that mostly ozone and OH radicals are responsible for the degradation of organic molecules in the plasma air purifier." @default.
- W2013224087 created "2016-06-24" @default.
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- W2013224087 date "2010-03-01" @default.
- W2013224087 modified "2023-10-17" @default.
- W2013224087 title "Degradation of volatile organic compounds in a non-thermal plasma air purifier" @default.
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- W2013224087 doi "https://doi.org/10.1016/j.chemosphere.2010.01.049" @default.
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