Decontamination of hydrocarbon containing substrates (LAW100)

Details Decontamination of hydrocarbon containing substrates (LAW100) Decontamination of hydrocarbon containing substrates (LAW100)

1994-04-26

1995-05-23

Lithgow, Thomas M.

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210704, 210908, 210909, 134 19, 134 251, 134 40, 405128, B01D 17035, B01D 1102, B09B 500

Patent

active

054178649

ABSTRACT:
Simply stated, in the process of the present invention a hydrocarbon contaminated substrate, such as a hydrocarbon contaminated soil, is separated preferably by wet-sieving, into a coarse fraction and a fines fraction. Thereafter, the coarse fraction is subjected to a floatation process to remove hydrocarbon contaminants from it and the fines fractions is treated with a hydrocarbon solvent followed by an aqueous solution of a surfactant to remove hydrocarbon contaminants from it.

REFERENCES:
patent: 4336136 (1982-06-01), Gighere
patent: 4783263 (1988-11-01), Trost
patent: 4851122 (1989-07-01), Mishra
patent: 4923125 (1990-05-01), Bateson
patent: 4969775 (1990-11-01), Cappel
patent: 5019245 (1991-05-01), Ignasiak
patent: 5115986 (1992-05-01), Bateson
patent: 5223147 (1993-06-01), Rosenstock
patent: 5286386 (1994-02-01), Darian

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