Pervaporation properties of dense polyamide-6 membranes in separation of water-ethanol mixtures

Journal Article · Sun Mar 31 23:00:00 EST 1996 · Separation Science and Technology

DOI:https://doi.org/10.1080/01496399608002497· OSTI ID:415101

Kujawski, W; Waczynski, M; Lasota, M ^[1]

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1. Nicolaus Copernicus Univ., Torun (Poland)

Several dense polyamide-6 membranes were prepared by casting 7 wt% and/or 10 wt% solutions of polymer in trifluoroethanol. The cast membranes were dried at different temperatures from 25 to 80{degrees}C. Sorption and pervaporation properties of PA-6 membranes in water-ethanol mixtures were obtained. The data obtained showed that water was preferentially sorbed into the membrane and transported through the membrane; however, the pervaporation selectivity factor {alpha}{sup PV} was close to unity at higher concentrations. The selectivity parameters in pervaporation were improved for membranes obtained from 10 wt% polymer and dried at higher temperatures.

• Sponsoring Organization: USDOE
• OSTI ID: 415101
• Journal Information: Separation Science and Technology, Journal Name: Separation Science and Technology Journal Issue: 7 Vol. 31; ISSN 0149-6395; ISSN SSTEDS
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
40 CHEMISTRY
ETHANOL
MEMBRANES
POLYAMIDES
SEPARATION PROCESSES
SORPTION
WATER