In-situ remediation of contaminated soils

B - Operations – Transporting – 09 – C

Patent

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B09C 1/08 (2006.01) B09C 1/10 (2006.01) C02F 3/32 (2006.01)

Patent

CA 2273787

A process for the in situ remediation of soil comprising introducing at least one co-metabolite for treating contaminants in a contaminated soil region into the contaminated soil region wherein the source of the at least one co- metabolite is at least one root zone located within the contaminated soil region, wherein each root zone contains the root system of a plurality of plants capable of releasing the at least one co-metabolite, and transmitting direct electric current through the contaminated soil region between a first electrode and a second electrode having opposite charge, wherein the first electrode is located at a first end of the contaminated soil region and the second electrode is located at the opposite end of the contaminated soil region.

L'invention porte sur un procédé in situ de remise en état des sols consistant à introduire dans une région contaminée du sol un ou plusieurs co-métabolites pour traiter les contaminants. La source d'un au moins des co-métabolites est au moins une zone de racines située à l'intérieur de la région de sol contaminée. Chacune des zones de racines contient le système radiculaire d'un ensemble de plantes capables de libérer le ou les co-métabolites. Ledit procédé consiste ensuite à faire passer un courant électrique continu à travers la région de sol contaminée entre une première électrode et une deuxième électrode de signes opposés. La première électrode est placée à une première extrémité de la région de sol contaminée, et la deuxième électrode, à l'extrémité opposée de la région de sol contaminée.

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