Evolution of the products of destruction of an admixture of Freon-113 in air under the effect of nanosecond corona and microwave discharges

The results are given of the experimental investigation of the process of d estruction of Freon-113 under the effect of pulse-periodic nanosecond coron a and microwave discharges. The main channels of destruction of the admixtu re of Freon in air are analyzed, and the products thus formed are identifie d. It is shown that the dissociation processes involving charged particles and oxygen atoms play an important part in the destruction of Freon. It is established that, in the process of treating a mixture containing C2Cl3F3, successive destruction occurs of chlorofluorocarbons formed at the precedin g stage, and Cl-2 and SiF4 molecules are the predominant products at the fi nal stage of the process. The destruction of C-CI and C-C bonds in CFC mole cules occurs mainly at the initial stage of the process, and it is only aft er this that stronger C-F bonds are destroyed in fluorine-enriched reaction products. It is shown that Freon destruction processes in nanosecond coron a and microwave discharges exhibit the same behavior defined by high values of reduced electric field in such discharges. The experimental results lea d one to a conclusion about the promise held by the application of nanoseco nd discharges for the purification of industrial waste-from Freons.