In-situ process for remediating or enhancing permeability of con

Details In-situ process for remediating or enhancing permeability of con In-situ process for remediating or enhancing permeability of con

1992-10-21

1994-04-05

Taylor, Dennis L.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

166248, 210747, 405258, B09B 100

Patent

active

052998878

ABSTRACT:
A process for removing an undesired contaminant from a sub-surface soil matrix comprises the steps of forming a bore hole in the soil, moving a source of microwave energy through the bore hole while radiating electromagnetic energy laterally into the soil at a frequency and power density which selectively heat the contaminant in the soil by resonance absorption of the electromagnetic energy, collecting fluids which enter the bore hole, and removing the collected fluids from the bore hole. When the method is utilized in clay-type soils, the microwave energy is used to heat entrapped water or contaminant molecules sufficiently to vaporize those molecules and thereby create fissures in the soil to increase the hydrodynamic permeability of the soil.

REFERENCES:
patent: 3920072 (1975-11-01), Kern
patent: 3948319 (1976-04-01), Pritchett
patent: 4900196 (1990-02-01), Bridge
patent: 4957393 (1990-09-01), Buelt et al.
patent: 4973811 (1990-11-01), Bass
patent: 5011329 (1991-04-01), Nelson et al.
patent: 5065819 (1991-11-01), Kasevich

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