Electric field effects on decomposition of dilute concentrations of CHCl3 and CCl4 in electron beam generated air plasma

doi:10.1016/0375-9601(93)90356-5

Physics Letters A

Volume 184, Issue 1, 27 December 1993, Pages 109-113

https://doi.org/10.1016/0375-9601(93)90356-5 Get rights and content

Abstract

Effects of an electric field on plasma-chemical decomposition of dilute concentrations (of order 300 ppm) of CHCl₃ and CCl₄ in dry and wet (≈10% relative humidity) air streams were studied. The atmospheric pressure, non-equilibrium plasma was produced by an electron beam. The function of the electric field is to control the average electron energy. For CHCl₃, application of an electric field tended to increase decomposition markedly, with larger increases in wet air relative to dry air. For CCl₄, it tended to slightly increase decomposition in dry air while decreasing decomposition in wet air. The results are qualitatively consistent with the primary decomposition mechanism of dissociative electron attachment to CHCl₃ and CCl₄ in competition with non-dissociative electron attachment to O₂.

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^☆: Work supported by the VOC Arid Integrated Demonstration Program, Office of Technology Development, Environmental Restoration and Waste Management, US Department of Energy, USA.

¹: Partially supported by a fellowship from the Gottlieb Daimler-und Karl Benz-Stiftung, Ladenburg, Germany.

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Electric field effects on decomposition of dilute concentrations of CHCl3 and CCl4 in electron beam generated air plasma☆

Abstract

Phys. Lett. A

Characteristics of the volatile organic compounds - arid integrated demonstration site

Pacific Northwest Laboratory, Richland, WA, PNL-7866, UC-630

Chemical kinetics of flue gas cleaning by electron beam

Remediation of a TCE ground spill using an electron accelerator

Proc. Int. Topical Meeting on Nuclear and hazardous waste management SPECTRUM '92

Electric field effects on decomposition of dilute concentrations of CHCl₃ and CCl₄ in electron beam generated air plasma☆