| NUKLEONIKA 2008, 53(1):11-16
THEORETICAL STUDY OF DOSE AND DOSE RATE EFFECT
ON TRICHLOROETHYLENE (HClC=CCl2) DECOMPOSITION
IN DRY AND HUMID AIR UNDER ELECTRON BEAM IRRADIATION
Henrietta Nichipor1, Svetlana Yacko1, Yongxia Sun2, Andrzej G. Chmielewski2,3, Zbigniew Zimek2
1 Institute of Radiation Physical and Chemical Problems
of the Belarussian Academy of Sciences,
Minsk-Sosny, Belarus
2 Institute of Nuclear Chemistry and Technology, 16 Dorodna Str., 03-195 Warsaw, Poland
3 Faculty of Chemical and Process Engineering, Warsaw University of Technology,
1 L. Waryńskiego Str., 00-645 Warsaw, Poland
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.
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