Abstract
Dilute concentrations of 1,1,1-trichloroethane (TCA) in air were decomposed in an electron beam generated plasma reactor. The energy required for high levels of TCA decomposition (greater than 90%) was determined as a function of inlet concentration. For 99%, decomposition of TCA, ez300 eV/molecule at 250 ppm inlet concentration, and ε¨~100 eV/molecule at 3000 ppm. A radical reaction mechanism is proposed which accounts for the formation of the major reaction products: 1,1-dichloroethylene, HCl, chloroacetylchloride, CO2, and COCl2. A model is derived based on first-order inhibited kinetics; a fit of the data to the model shows that at high decomposition fractions, radical scavenging by reaction products is a significant inhibitor of TCA decomposition.
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This work was supported by the Contaminant Plume Containment and Remediation Focus Area, Office of Environmental Management, U.S. Department of Energy.
Also affiliated with the Department of Nuclear Engineering.
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Vitale, S.A., Hadidi, K., Cohn, D.R. et al. Electron beam generated plasma decomposition of 1,1,1-trichloroethane. Plasma Chem Plasma Process 16, 651–668 (1996). https://doi.org/10.1007/BF01447013
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DOI: https://doi.org/10.1007/BF01447013