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  • Title: Removal of low-concentration BTX in air using a combined plasma catalysis system.
    Author: Fan X, Zhu TL, Wang MY, Li XM.
    Journal: Chemosphere; 2009 Jun; 75(10):1301-6. PubMed ID: 19375149.
    Abstract:
    The behavior of non-thermal plasma (NTP) and combined plasma catalysis (CPC) was investigated for removal of low-concentration benzene, toluene and p-xylene (BTX mixture) in air using a link tooth wheel-cylinder plasma reactor. Combining NTP with MnO(x)/Al(2)O(3) catalyst after the discharge zone (CPC) significantly promoted BTX conversion and improved the energy efficiency. For a specific input energy (SIE) of 10 JL(-1), the conversion of benzene, toluene and p-xylene reached 94%, 97% and 95%, respectively. The introduction of MnO(x)/Al(2)O(3) catalyst also moved the BTX conversion towards total oxidation and reduced the emission of O(3) and NO(2) as compared to NTP alone. For an SIE of 10 JL(-1), the O(3) outlet concentration decreased from 46.7 for NTP alone to 1.9 ppm for CPC, while the NO(2) emission correspondingly decreased from 1380 to 40 ppb.
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