Liquid purification or separation – Processes – Treatment by living organism
Patent
1989-04-03
1991-05-21
Jones, W. Gary
Liquid purification or separation
Processes
Treatment by living organism
210620, 210747, 210901, 405128, 405129, 166246, 435264, 435281, C02F 302
Patent
active
050172891
ABSTRACT:
The present invention is a process for in situ biodegradation of spilled hydrocarbons. The process involves drawing oxygen into a hydrocarbon contaminated zone. A borehole is drilled into the contaminated zone and gas is evacuated at high rates out of the borehole to thereby draw oxygen from the earth's surface and through the contaminated zone. Surprisingly, the carbon dioxide concentration in the evacuated gas remains high even at the high flow rates. The rate of gas evacuation in the present process is maintained sufficiently high so that the hydrocarbon biodegradation rate is within at least 50% of the maximum hydrocarbon biodegradation within the zone. The process can be applied to both porous and nonporous soils having relatively low water and gas permeability.
REFERENCES:
patent: 3616204 (1971-10-01), Linn
patent: 3846290 (1974-11-01), Raymond
patent: 4288174 (1981-09-01), Laws
patent: 4401569 (1983-08-01), Jhaveri et al.
patent: 4469176 (1984-09-01), Zison et al.
patent: 4660639 (1987-04-01), Visser et al.
patent: 4670148 (1987-06-01), Schneider
patent: 4713343 (1987-12-01), Wilson, Jr. et al.
patent: 4730672 (1988-03-01), Payne
patent: 4765902 (1988-08-01), Ely et al.
patent: 4842448 (1989-06-01), Koerner et al.
patent: 4849360 (1989-07-01), Norris et al.
Ely Douglas L.
Heffner David A.
Chevron Research & Technology Company
Jones W. Gary
Upton Christopher
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