Comparison of the decomposition characteristics of aromatic VOCs using an electron beam hybrid system |
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| Authors: | Youn-Suk Son Ki-Joon Kim Ji-Yong Kim Jo-Chun Kim |
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| Institution: | 1. Department of Advanced Technology Fusion, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea;2. Emission Sources Research Division, National Institute of Environmental Research, Incheon 404-708, Republic of Korea;3. Department of Environmental Engineering, Konkuk University, 1 Hwayang-dong, Gwangjin-gu, Seoul 143-701, Republic of Korea;1. Hot Laboratory and Waste Management Center (HLWMC), Atomic Energy Authority, P.O. Box 13758, Inshas, Cairo, Egypt;2. Department of Polymer, National Center for Radiation Research and Technology(NCRRT), Atomic Energy Authority, Nasr City, P.O. Box 19, Cairo, Egypt;1. Johnson Matthey, Blount’s Court, Sonning Common, Reading RG4 9NH, UK;2. Johnson Matthey, Orchard Rd, Royston SG8 5HE, UK |
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| Abstract: | We applied a hybrid technique to assess the decomposition characteristics of ethylbenzene and toluene that annexed the catalyst technique with existing electron beam (EB) technology. The removal efficiency of ethylbenzene in the EB–catalyst hybrid turned out to be 30% greater than that of EB-only treatment. We concluded that ethylbenzene was decomposed more easily than toluene by EB irradiation. We compared the independent effects of the EB–catalyst hybrid and catalyst-only methods, and observed that the efficiency of the EB–catalyst hybrid demonstrated approximately 6% improvement for decomposing toluene and 20% improvement for decomposing ethylbenzene. The G-values for ethylbenzene increased with initial concentration and reactor type: for example, the G-values by reactor type at 2800 ppmC were 7.5–10.9 (EB-only) and 12.9–25.7 (EB–catalyst hybrid). We also observed a significant decrease in by-products as well as in the removal efficiencies associated with the EB–catalyst hybrid technique. |
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