Pervaporation of phenols

Details Pervaporation of phenols Pervaporation of phenols

C - Chemistry, Metallurgy

07

C

182/13.1

C07C 37/70 (2006.01) C02F 1/44 (2006.01) C02F 1/58 (2006.01) C07C 29/76 (2006.01) C07C 46/10 (2006.01)

Patent

CA 1312550

Abstract of the Disclosure Aqueous phenolic solutions are separated by pervaporation to yield a phenol-depleted retentate and a phenol-enriched permeate. The separation effect is enhanced by phase segregation into two immiscible phases, "phenol in water" (approximately 10% phenol), and "water in phenol" (approximately 70% phenol). Membranes capable of enriching phenols by pervaporation include anion exchange membranes and block copolymers of either polyether polyamide or diol terephthalate polyether diol membrane selection and process design is guided by pervaporation performance and chemical stability towards phenolic solutions. Single- and multiple-state processes are disclosed, both for the enrichment of phenols and for purification of water from phenolic contamination.

548728

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