Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1994-07-29
1995-07-25
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041801, 588204, B01D 6142, B01D 6156
Patent
active
054358957
ABSTRACT:
There is presented an electrokinetic electrode assembly for use in extraction of soil contaminants from unsaturated soil in situ. The assembly includes a housing for retaining a liquid comprising an electrolyte solution, pure water, and soil water, the housing being in part of porous material capable of holding a vacuum. An electrode is mounted in the housing. The housing is provided with a vacuum orifice for effecting a vacuum within the housing selectively to control flow of soil water through the housing into the chamber and to control outflow of the liquid from the chamber. The assembly further includes conduit means for removing the liquid from the housing and returning the electrolyte solution to the housing, and a conduit for admitting pure water to the housing. There is further presented an electrode system and method for extraction of soil contaminants, the system and method utilizing at least two electrode assemblies as described above.
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Horng et al., "Evaluating Electro-kinetics as a Remedial Action Technique", Aug. 1987 pp. 65-77.
Lindgren Eric R.
Mattson Earl D.
Libman George H.
Niebling John
Phasge Arun S,.
Sandia Corporation
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