Journal of the Brazilian Chemical Society
On-line version ISSN 1678-4790
CUBAS, Anelise L.V.; CARASEK, Eduardo; DEBACHER, Nito A. and SOUZA, Ivan G. de. Development of a DC-plasma torch constructed with graphite electrodes and an integrated nebulization system for decomposition of CCl4. J. Braz. Chem. Soc. [online]. 2005, vol.16, n.3b, pp. 531-534. ISSN 1678-4790. http://dx.doi.org/10.1590/S0103-50532005000400006.
This work describes the development of a continuous flow plasma torch with graphite electrodes and an integrated nebulization system for the elimination of organochlorine liquid waste (carbon tetrachloride) on a small scale. The gases resulting from the pyrolysis of the carbon tetrachloride by the plasma were collected and identified by gas chromatography, coupled with mass spectrometry (GC-MS). Monitoring was carried out by gas chromotography with flame ionization detection (GC-FID). It was observed that the thermal plasma technique eliminated the carbon tetrachloride completely, being characterized by low cost, operational simplicity and reduced dimensions. This technique presents a suitable environmentally correct alternative, since it reduces the total emission of organochlorine gases.
Keywords : waste treatment; organochlorines; DC-plasma torch.