The decomposition of CFCs in the troposphere by lightning

Details The decomposition of CFCs in the troposphere by lightning The decomposition of CFCs in the troposphere by lightning

Aug 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jastp..59.1373c&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, v. 59, p. 1373-1379.

Physics

Scientific paper

The decomposition of chloroflurocarbons (CFCs) in the troposphere with the aid of natural lightning energy is calculated. The scheme is to use the reaction of dissociative attachment of an electron to a CFC molecule, producing Cl-. An upper limit to the decomposition rate due only to natural lightning discharges is found to be ~900 kg in one year, which is only about one-millionth of the annual production rate of CFC molecules worldwide. A method to increase the efficiency of decomposition is proposed, which uses negative ion drift under the static electric field near the thundercloud. The energy consumption to decompose one CFC molecule is found to be 1 × 107 eV at a minimum, which leads to the maximum decomposition rate of 4 × 106 kg/year, almost 0.5% of the annual production rate, which, unfortunately, is still not significant.

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