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Resistive heating enhanced soil vapor extraction of chlorinated solvents from trichloroethylene contaminated silty, low permeable soil

Author: Zutphen, M. van · Heron, G. · Enfield, C.G. · Christensen, T.H.
Institution: Nederlands Instituut voor Toegepaste Geowetenschappen TNO
Source:Harder, W.Arendt, F., Consoil '98 ; 6th international FZK/TNO conference on contaminated soil, organized by Research Centre Karlsruhe (KZK, D), TNO, in cooperation with Scottish enterprise, May 17-21, 1998, EICC Edinburgh; vol. 1, 561-570
Identifier: 529137
Keywords: Environment · Clay · Desorption · In-situ remediation · Removal rates · Soil vapor extraction · Temperature · Thermal desorption · Thermal treatment · Trichloroethylene · Volatilization


A 2D-laboratory box experiment (12 x 56 x 116 cm) was conducted to simulate the enhancement of soil vapor extraction by the application of low frequency electrical heating Uoule heating) for the remediation of a low permeable, silty soil contaminated with trichloroethylene. Joule heating enlarged the flux of extracted TCE with a factor 19 (when boiling) in comparison to the removal rates achieved by soil vapor extraction alone (at 23°C). Within 45 days a removal of 99.8% of the TCE was accomplished.