Continuous ion exchange process using thermally regenerable liqu

Details Continuous ion exchange process using thermally regenerable liqu Continuous ion exchange process using thermally regenerable liqu

1983-12-05

1985-06-18

Cintins, Ivars

Liquid purification or separation

Processes

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

B01D 1504

Patent

active

045239983

ABSTRACT:
Advantage is taken of the thermal dependency of the direction of certain reactions involving liquid ion exchange materials to provide a continuous process for removal of mineral ion species from aqueous streams. The process is particularly applicable to water softening applications and also for applications involving mineral recovery. In the present invention liquid ion exchange material having mineral species attached thereto are thermally treated to redissolve these mineral species in a separate aqueous stream. The process of the present invention is operable using either direct liquid/liquid contact or with the inclusion of a membrane separating the feed solution to be treated from the liquid ion exchange material.

REFERENCES:
patent: 3130151 (1964-04-01), Levendusky
patent: 3425937 (1969-02-01), Weiss et al.
patent: 3944485 (1976-03-01), Rembaum et al.
patent: 4161445 (1979-07-01), Coillet
Calmon, C., Ion Exchange for Pollution Control, vol. II, CRC Press, 1979, pp. 161-162.
Sirotherm Desalination Ion Exchange with a Twist--Chemtech, May 1975, pp. 303-307.
Lo, T. C.; Baird, M. H. I., & Hanson, C.; "Handbook of Solvent Extraction", John Wiley & Sons, Inc. (1983), p. 631.

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