Decontamination of soil and other particulate matter

Details Decontamination of soil and other particulate matter Decontamination of soil and other particulate matter

1993-10-06

1995-06-27

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210909, B01D 1104

Patent

active

054276888

ABSTRACT:
This invention relates to the removal of polychlorinated biphenyl compounds from a mass of particulate material such as soil, sand, or gravel by washing with an aqueous nonionic surfactant solution which is subsequently extracted with a water-immiscible organic solvent in which the nonionic surfactant is not soluble.

REFERENCES:
patent: 4662948 (1987-05-01), Weitzman
patent: 5055196 (1991-10-01), Darian et al.
A S Abdul & T L Gibson, "Laboratory Studies of Surfactant-Enhanced Washing of Polychlorinated Biphenyl from Sandy Material", Environ. Sci. Tech. vol. 25, No. 4, 1991.

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