Journal
IEEE TRANSACTIONS ON PLASMA SCIENCE
Volume 39, Issue 6, Pages 1482-1488Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2011.2128351
Keywords
High-voltage power source; nonthermal plasmas; streamer corona; styrene; volatile organic compounds (VOCs)
Categories
Funding
- National Natural Science Foundation of China [NSFC-N10711]
- Higher Education Ministry of China [A50701]
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This paper reports plasma-induced styrene removal characteristics in air with a homemade ac/dc plasma system. The removal efficiency and reaction kinetics are investigated in terms of source specifications, relative humidity (RH), initial concentrations, by-products, and specific plasma energy density. The result shows that, the larger the difference between peak and dc voltages, the better the removal efficiency. For an initial concentration of 100-110 ppm, the maximum efficiency is around 95% at the energy density of 37-39 J/L, and about 94 ppm is removed under a lower RH. It drops, however, to about 50 and 25 ppm for the RH of 64% and 89%, respectively. Meantime, with increasing humidity, the global plasma kinetics is changed from nonsignificant to significant linear radical termination processes. With regard to by-products, they are mainly benzaldehyde and phenylacetaldehyde.
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