Decontamination of earth formations

Details Decontamination of earth formations Decontamination of earth formations

1989-05-15

1991-04-16

Hruskoci, Peter

Liquid purification or separation

Processes

Including geographic feature

210756, 210901, 210908, 166252, 166270, 166275, 252 8552, 252 8554, 405263, 405264, B01D 1200

Patent

active

050080199

ABSTRACT:
Water supply contamination is reduced within a formation or eliminated in a flooding procedure utilizing an alkaline aqueous solution. Biodegradable polymer provides a desired viscosity and mobility. Biodegradable surfactant and alkali provide any needed interfacial tension reduction. Additives, e.g., chelating agents, can be utilized for solubilization of insoluble contaminants.

REFERENCES:
patent: 3482636 (1969-12-01), Crowe
patent: 3782471 (1974-01-01), Felmann et al.
patent: 4074759 (1978-02-01), Bousaid
patent: 4206809 (1980-06-01), Jones
patent: 4502541 (1985-03-01), Lawson et al.
patent: 4591443 (1986-05-01), Brown et al.
patent: 4822512 (1989-04-01), Auchincloss
U.S. Statutory Invention Registration H475, Lawson et al., 6/88.

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