Pervaporation separation of ethanol-water mixtures using...

Details Pervaporation separation of ethanol-water mixtures using... Pervaporation separation of ethanol-water mixtures using...

B - Operations, Transporting

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B01D 61/36 (2006.01) B01D 69/12 (2006.01) B01D 71/40 (2006.01) C02F 1/44 (2006.01) C08J 7/04 (2006.01) C08J 9/36 (2006.01)

Patent

CA 1280041

ABSTRACT Synthetic, organic, polymeric membranes were prepared from polyacrylic acid salts for use with pervaporation apparatus in the separation of ethanol-water mixtures. The polymeric bacterial was prepared in dilute aqueous solution and coated onto a polysulfone support film, from which excess polymeric material was subsequently removed. Cross-links were then generated by limited exposure to toluene-2,4-diisocyanate solution, after which the prepared membrane was heat-cured. The resulting membrane structures showed high selectivity in permeating water over a wide range of feed concentrations.

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