Patent ID: 6096217
Filing Date: 2000-08-01
Classification: B01D,G21C,G21F,Y02E,Y02W

Abstract:
A process for separating a preselected chemical species from a feed solution, said process comprising:a. providing an aqueous feed solution having at least one preselected chemical species;b. providing an aqueous strip liquid;c. providing a microporous liquid membrane support member;d. providing a carrier selective for said preselected chemical species;e. providing a diluent for said carrier, said diluent having a dielectric constant greater than about 20 and said diluent being immiscible in water;f forming a solution of said diluent and said carrier with said solution being immiscible with said feed solution and said strip liquid;g. filling the pores of said microporous liquid membrane support member with said solution to form a supported liquid membrane;h. contacting said feed solution containing said preselected chemical species with a first side of said liquid membrane to form a carrier complex from at least a portion of said preselected chemical species and said carrier;i. moving said carrier complex from said first side of said liquid membrane to a second side of said liquid membrane;j. contacting said strip liquid with said second side of said liquid membrane;k. disassociating said carrier complex; andl. removing at least a portion of said preselected chemical species from said second side of said liquid membrane into said strip liquid.