| 摘要 |
The invention relates to a method for electrokinetic decontamination of a porous solid medium, which comprises: a) extracting the contaminating species present in the solid medium in an electrolyte appearing as an essentially inorganic gel, this extraction being obtained by applying an electric current between two electrodes positioned at the surface and/or in the interior of the solid medium, the contact of at least one of these electrodes with said solid medium being ensured by a layer of said gel, b) drying the gel containing the thereby extracted contaminating species until a dry residue is obtained which fractures, and c) removing the thereby obtained dry residue from said solid residue. Applications: decontamination of materials with a cement matrix, notably within the scope of dismantlement of military or industrial installations, in particular nuclear installations, or the rehabilitation of installations likely to have been contaminated by ecotoxic or radiological chemical species; clearing pollution of geological soils, sediments and sludges. |
