Pressure induced surfactant recovery during ultrafiltration of w

Details Pressure induced surfactant recovery during ultrafiltration of w Pressure induced surfactant recovery during ultrafiltration of w

1988-10-17

1990-01-09

Spear, Frank

Liquid purification or separation

Processes

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

210651, B01D 1300

Patent

active

048926604

ABSTRACT:
Surfactants present in water/oil/surfactant emulsions can be selectively separated from the emulsions by practicing an ultrafiltration process under specific conditions of pressure and ultrafiltration membrane pore size. It has been discovered that increasing the applied pressure results in an increase in the permeability of the surfactant without a commensurate increase in the permeability of the water or oil.

REFERENCES:
patent: 4111812 (1978-09-01), Baddour
patent: 4293428 (1981-10-01), Gale et al.
patent: 4426293 (1984-01-01), Mason et al.
patent: 4655927 (1987-04-01), Ford
"Characteristics of The Ultrafiltration of Linear Flexible-chain Polymers", Cherkasov, et al., Kolloidn Zh. 1984, 46(1) 185-6.
"Ultrafiltration", Kirk-Othmer Encyclopedia of Chemical Technology, 3rd Ed., vol. 23.

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