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Theoretical study of dose and dose rate effect on trichloroethylene (HClC=CCl2) decomposition in dry and humid air under electron beam irradiation

Treść / Zawartość
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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Experimental data related to C2HCl3 (TCE) removal in dry and humid (200-1000 ppm of H2O) air, respectively, in ambient conditions under electron beam irradiation in the dose range of 1-40 kGy has been published in the literature. Based on the experimental results a theoretical model of C2HCl3 decomposition was proposed for the kinetic mechanism of such process. The active radicals of Cl, O and OH play an important role in the decomposition of TCE. According to the calculations performed, the Cl- dissociative electron attachment predominates in the initial stage of C2HCl3 decomposition. Cl radical accelerates this degradation by chain process in both humid and dry air, respectively. The OH radical produced in humid air also enhances the decomposition process of TCE.
Czasopismo
Rocznik
Strony
11--16
Opis fizyczny
Bibliogr. 14 poz., rys.
Twórcy
autor
autor
autor
autor
  • Institute of Radiation Physical and Chemical Problems of the Belarussian Academy of Sciences, Minsk-Sosny, Belarus
Bibliografia
  • 1. Atkinson R, Aschmann SM (1987) Kinetics of the gas-phase reactions of Cl atoms with chloroethenes at 298 ± 2 K and atmospheric pressure. Int J Chem Kinetics 19:1097–1105
  • 2. Atkinson R, Baulch DL, Cox RA et al. (1997) Evaluated kinetic, photochemical and heterogeneous data for atmospheric chemistry: Supplement V. J Phys Chem Ref Data 26:521–1011
  • 3. Bugaenko WL, Grichkin WL (1980) Program for modeling of chemical kinetics. Report ITEP no. 50. Institute of Theoretical and Experimental Physics, Moscow
  • 4. Hakoda T, Hashimoto S, Fujiyama Y, Mizuno A (2000)Decomposition mechanism for electron beam irradiation of trichloroethylene-air mixtures. J Phys Chem A 104:59–66
  • 5. Hasson AS, Smith IWM (1999) Chlorine atom initiated oxidation of chlorinated ethenes: results for 1,1-dichloroethene (H2C=CCl2), 1,2-dichloroethene (HClC=CHCl), trichloroethene (CHClC=CCl2),and tetrachlorethene (Cl2C=CCl2). J Phys Chem A 103:2031–2043
  • 6. Li Z, Bozzelli JW, Ho W (1999) Reaction of OH radical with C2H3Cl: rate constant and reaction pathway analysis. J Phys Chem A 103:7800–7810
  • 7. Nichipor H, Dashouk E, Yacko S et al. (2003) The kinetics of 1,1-dichloroethene (CCl2 =CH2) and trichloroethene (HClC=CCl2) decomposition in dry and humid air under the influence of electron beam. Nukleonika 48;1:45–50
  • 8. Penetrante BM, Hsiao MC, Bardsley JN et al. (1996) Electron beam and pulsed corona processing of volatile organic compounds in gas streams. Pure Appl Chem 68;5:1083–1087
  • 9. Prager L, Langguth HL, Rummel S, Mennert R (1995)Electron beam degradation of chlorinated hydrocarbons in air. Radiat Phys Chem 46:1137–1142
  • 10. Sun Y, Hakoda T, Chmielewski AG et al. (2001) Mechanism of 1,1-dichloroethylene decomposition in humid air under electron beam irradiation. Radiat Phys Chem 62:353–360
  • 11. Upadhyaya HP, Kumar A, Naik PD, Sapre AV (2000) Discharge kinetic studies of O(3P) with chloroethylenes CH2CCl2, CHClCCl2, CCl2CCl2. Chem Phys Lett 321:411–418
  • 12. Vitale SA, Hadidi K, Cohn DR, Blomberg L (1997b)Evaluation of reaction rate constants for chlorinated ethylene and ethane decomposition in attachmentdominated atmospheric pressure dry-air plasmas. Phys Lett A 232:447–455
  • 13. Vitale SA, Hadidi K, Cohn DR, Falkos P (1997a) The effect of a carbon-carbon double bond on electron beamgenerated plasma decomposition of trichloroethylene and 1,1,1-trichloroethane. Plasma Chem Plasma Processing 17;1:59–78
  • 14. Won YS, Han DH, Stuchinskaya T, Park WS, Lee HS (2002) Electron beam treatment of chloroethylenes/air mixture in a flow reactor. Radiat Phys Chem 63;2:165–175
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUJ6-0023-0015
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