Separation of aqueous organic liquid solutions through polymer membranes

✍ Scribed by Tadashi Uragami

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 570 KB
• Volume: 90
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/0011-9164(93)80184-o

✦ Synopsis

Characteristics of permeation and separation for aqueous dimethyl sulfoxide, acetic acid and ethanol solutions through some polymer membranes such as chitosan, poly(vinyl chloride) and poly(dimethy1 siloxane) membrane were studied by evapomeation. In temperature difference controlling evapomeation (TDEV), when the temperature of the feed solution was kept constant and the temperature of the membrane surroundings was changed, permselectivity for water increased in the chitosan and poly(viny1 chloride) membranes; in the poly(dimethy1 siloxane) membrane the permselectivity for ethanol increased while decreasing the temperature of the membrane surroundings. Permeation and separation mechanisms for aqueous organic liquid solutions through the above polymer membranes by the TDEV method are discussed.