Pressure-driven affinity sorption membranes

Details Pressure-driven affinity sorption membranes Pressure-driven affinity sorption membranes

B - Operations, Transporting

01

D

195/59, 195/78

B01D 61/14 (2006.01) B01D 61/18 (2006.01)

Patent

CA 1082625

ABSTRACT OF THE DISCLOSURE Pressure-driven affinity sorption membranes are prepared from a membrane filter composed of an insoluble matrix polymer or an interpolymer composite which is homoporous and with pores of appropriate dimensions, acti- vating its pore surfaces (where necessary) under pressure-driven conditions to fix to them appropriate ligand groups either with or without connecting "chain" molecules in a one or multi-step reaction, also under pressure-driven condi- tions where necessary so as to provide for an adequate control of the time and conditions of coupling, following which processes of separation and puri- fication are achieved by passing through these membrane filters solution containing mixtures, one or more of which forms a specific complex with the ligand on the pore surface of the membrane, washing out the uncoupled solutes, then employing an appropriate displacing or eluting agent to recover the desi- red component in a pure and concentrated state, all under pressure-driven conditions.

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