Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1990-10-22
1992-05-19
Dawson, Robert A.
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210643, 210644, 210651, 210653, 21032176, B01D 1504, B01D 1700
Patent
active
051145790
ABSTRACT:
A supported liquid membrane system for the separation of a preselected chemical species within a feedstream, preferably an aqueous feedstream, includes a feed compartment containing a feed solution having at least one preselected chemical species therein, a stripping compartment containing a stripping solution therein, and a microporous polybenzimidazole membrane situated between the compartments, the microporous polybenzimidazole membrane containing an extractant mixture selective for the preselected chemical species within the membrane pores is disclosed along with a method of separating preselected chemical species from a feedstream with such a system, and a supported liquid membrane for use in such a system.
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Danesi et al. in Journal of Membrane Science, 27, pp. 339-347 (1986), entitled "A Composite Supported Liquid Membrane for Ultraclean Co-Ni Separations".
P. A. O'Hara et al. in Journal of Membrane Science. 44, pp. 273-287 (1989), entitled "Supported Liquid Membranes for Copper Transport".
Cottrell Bruce H.
Dawson Robert A.
Fortuna Ana M.
Gaetjens Paul D.
Moser William R.
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