Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1992-01-29
1993-08-31
Niebling, John
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041822, 2041801, C25C 122
Patent
active
052405702
ABSTRACT:
In-situ extraction of contaminants, such as PCBs, from soil is achieved by an electroosmosis technique. The soil is treated with a low concentration surfactant solution used as a purging liquid. The contaminant is dissolved in the ground water, aided by the purging liquid. An electric field is applied to a region of the soil causing the ground water, contaminant and surfactant to move by electroosmosis to a collection point where the purging liquid, dissolved contaminant and surfactant are collected and removed from the soil. This method may also be used to control the direction of seepage of the contaminants.
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Chang Hsueh-Rong
Su Tah-Mun
General Electric Company
Niebling John
Phasge Arun S,.
Snyder Marvin
Zale Lawrence P.
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