Sodium removal from brines

Patent 4859343 Issued on August 22, 1989. Estimated Expiration Date:

December 2, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Inventors

Assignee

Lithium Corporation of America

Application

No. 07/127819 filed on 12/02/1987

US Classes:

210/679, Utilizing exchange or sorbent material associated with inert material210/681, Removing ions423/179.5, Lithium423/181Ion exchanging or liquid-liquid extracting

Examiners

Primary: Cintins, Ivars

Attorney, Agent or Firm

International Classes

C01D 15/00 (20060101)
C01D 17/00 (20060101)
C01D 3/14 (20060101)
C01D 15/04 (20060101)
C01D 3/00 (20060101)
B01J 39/00 (20060101)
B01J 39/02 (20060101)

Abstract

A method for removing 99% of the sodium ions from a natural or industrial brine containing dissolved salts of metals of Group 1A of the periodic chart and in which brine sodium ions are not the predominant metal ions by contacting the brine at pH 11 to 12 with an ion exchanger selected from crystalline antimonic acid and polyantimonic acid, and removing from contact with the ion exchanger the brine with greater than 99% of the sodium ions removed.

Other References

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Abe, M.; Ito, T. "Synthetic Inorganic Ion Exchange Materials. X. Preparation and Properties of So-Called Antimonic(V) Acid," Bull. Chem. Soc. Jpn. 41, pp. 333-342 (1968)
Abe, M. "Synthetic Inorganic Ion Exchange Materials. XVI. Chromatographic Separation of Microamounts of Sodium and Potassium from a Large Quantity of Lithium Chloride by Using Crystalline Antimonic(V) Acid as a Cation Exchanger," Sepn. Sci. Tech. 13:4, 347-365 (1978)
Abe, M. "Synthetic Inorganic Ion Exchange Materials XVII. A Study on Ion Exchange Selectivity in Crystalline Antimonic(V) Acid and Hydrated Antimony Pentoxide for Various Metal Ions in Nitric Acid Media,"Sepn. Sci. Tech. 15:1, 23-30 (1980)
Baetsle, L. H.; Huys, D. "Structure and Ion Exchange Characteristics of Polyantimonic Acid,"J. Inorg. Nucl. Chem. 30, 639-649 (1968)
Girardi, F.; Sabbioni, E. "Selective Removal of Radio-Sodium from Neutron-Activated Materials by Retention on Hydrated Antimony Pentoxide," J. Radioanal. Chem., 1, 169-178 (1968)
Abe, M.; Sudoh K., "Synthetic Inorganic Ion Exchange Materials, XXX. Ion Exchange Equilibria of Alkaline Earth Metal Ions and Pb²⁺ /Hydrogen Ions on Crystalline Antimonoic(V) Acid,"J. Inorg. Nucl. Chem., 43 No. 10, 2537-2542 (1981)
Abe, M. "Synthetic Inorganic Ion Exchange Materials, XVIII. Ion Exchange Equilibria of Crystalline Antimonic(V) Acid with Alkali Metal Ions," J. Inorg. Nucl. Chem. 41, 85-89 (1979)