Method for in situ contaminant extraction from soil

Details Method for in situ contaminant extraction from soil Method for in situ contaminant extraction from soil

1991-07-11

1993-01-26

Reese, Randolph A.

Hydraulic and earth engineering

Soil remediation

In situ contaminant removal or stabilization

405131, E02D 311

Patent

active

051817969

ABSTRACT:
Disclosed is a method and apparatus for the in situ removal of contaminants from contaminated soil wherein exhaust gas from an internal combustion engine is injected at an elevated temperature into contaminated soil creating a sweep gas driving volatile organic chemicals out of the in situ soil. The mechanical energy from the internal combustion engine is utilized in separating the volatile organic chemicals from the sweep gas and/or increasing the flow rate of the sweep gas through the contaminated soil by either increasing the injection pressure and/or reducing the pressure on the recovery well.

REFERENCES:
patent: 4846134 (1989-07-01), Perry et al.
patent: 4895085 (1990-01-01), Chips
patent: 4982788 (1991-01-01), Donnelly
patent: 5011329 (1991-04-01), Nelson et al.
patent: 5022787 (1991-06-01), Kuragaski et al.

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