Membrane filtration using ultrafiltration membrane

Details Membrane filtration using ultrafiltration membrane Membrane filtration using ultrafiltration membrane

B - Operations, Transporting

01

D

182/15.4

B01D 61/14 (2006.01)

Patent

CA 1195254

ABSTRACT Novel Membrane Filtration Using Ultrafiltration Membrane A process for separating and condensing at least one selected organic liquid from a feed comprising a mixture thereof in the state of one phase or two phases which com- prises conducting ultrafiltration by using a polymeric porous membrane having a mean pore size Image of at least about 10-6cm and a porosity(Pr) of at least about 50 % under the conditions that the effective pressure gradient(.DELTA.P/d) loaded on the poly- meric porous membrane satisfies the following equations: .DELTA.P/d < 1000 (1) and .DELTA.P/d ? 1 x 10-1dn/ Image (2) wherein .DELTA.P(cmHg) is the effective pressure difference between one and the other surfaces of the membrane, d(cm) is a thickness of the membrane, Image is a mean pore radius of the membrane, Pr(%) is a porosity of the membrane and n (centipoise) is a viscosity of the selected organic liquid.

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