Patent ID: 6485650
Filing Date: 2002-11-26
Classification: B01D,C07B,C07C

Abstract:
A method of separating enantiomers in a supported liquid membrane module containing at least one tubular liquid membrane element which includes a first tubular membrane located within a second tubular membrane with an annular gap defined between the first tubular membrane and the second tubular membrane such that the liquid membrane is contained in said annular gap and said tubular membranes contain pores; said supported liquid membrane module comprises a liquid membrane, a feed fluid containing a racemic mixture and a sweep fluid which contains the separated enantiomer, such that said feed fluid and said sweep fluid are adjacent to, but on opposite sides of, said liquid membrane and the feed fluid and the sweep fluid have a substantially continuous interfacial contact along the length of the liquid membrane, said method comprising:a) contacting liquid membrane with said feed fluid; b) transporting preferentially one enantiomer from the feed fluid into the liquid membrane; c) contacting liquid membrane with said sweep fluid; d) transporting said preferential enantiomer from the liquid membrane into the sweep fluid; and e) recovering the transported preferential enantiomer from the sweep fluid.