Ion expulsion ultrafiltration method

Details Ion expulsion ultrafiltration method Ion expulsion ultrafiltration method

1991-05-20

1993-01-05

Hruskoci, Peter

Liquid purification or separation

Processes

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

210650, 210651, 210904, 210906, 210912, 210913, B01D 6116

Patent

active

051768348

ABSTRACT:
A method for reducing the concentration of target co-ions in a liquid feed mixture comprising target co-ions and counter-ions by adding a colloid such as a polyelectrolyte or surfactant comprising a colloidal ion and colloidal counter-ions to the feed mixture wherein the colloidal ion has the same type of charge as the target co-ion. The feed mixture containing the colloid is filtered through an ultrafiltration membrane having pores small enough to block the passage of the colloidal ion.

REFERENCES:
patent: 4089778 (1978-05-01), Gauger
patent: 4161447 (1979-07-01), Kojima
patent: 4741831 (1988-05-01), Grinstead
patent: 4755298 (1988-07-01), Grinstead
The Daily Oklahoman, "OU Chemists Test Their Idea of the Perfect Pollution Trap," Jan. 17, 1991, p. 15, col. 2 and p. 17, col. 2.
Christian et al., "Ion-Expulsion Ultrafiltration-A New Method for Purifying Aqueous Streams", Langmuir 5:876-879 (1989).
Sasaki et al., "Polyelectrolyte Ultrafiltration of Multivalent Ions Removal of Cu(II) by Sodium Poly(styrenesulfonate)", Langmuir 5.
Dunn et al., "Concentration Polarization Effects in the Use of Micellar-Enhanced Ultrafiltration to Remove Dissolved Organic . . . ".
Cox et al., "Donnan Dialysis Enrichment of Cations" Anal. Chem. 49(8):1272-1275 (1977).
Lonsdale et al., "Donnan-Membrane Effects in Hyperfiltration of Ternary Systems", JCS Far. Trans. I, 71:501 (1975).
Glueckauf et al., "The Donnan Law and Its Application to Ion Exchanger Polymers", Proc. Roy. Soc. 268A:339-349 (1962).
Blaedel et al., "Exchange Equilibrium Through Ion Exchange Membranes", Anal. Chem. 38:1305 (1966).
Higuchi et al., "Possible Utilization of Polyelectrolytes in Enhancing Drug Absorption", J. Am. Pharm. Assoc. 43:646 (1954).
Wheaton et al., Ind. Eng. Chem. 45:228 (1953).

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