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7906014 
Journal Article 
A STUDY ON PERVAPORATION OF AQUEOUS BENZYL ALCOHOL SOLUTION BY POLYDIMETHYLSILOXANE MEMBRANE 
Zhang, SQ; Fouda, AE; Matsuura, T 
1992 
Yes 
Journal of Membrane Science
ISSN: 0376-7388 
70 
2-3 
249-255 
English 
WOS:A1992JB46200013 
Pervaporation of dilute benzyl alcohol solutions was attempted using polydimethylsiloxane (PDMS) membranes. The effects of temperature, downstream pressure and the solution concentration as operating variables on the membrane performance were investigated. It was possible to concentrate benzyl alcohol ten fold in the permeate at the downstream pressure of 66.7 Pa (0.5 mmHg) activity coefficient of benzyl alcohol in the aqueous solution. The permeate concentration, however, decreased and became even less than the feed concentration at high downstream pressures. An increase in the operating temperature increased the vapor pressure of benzyl alcohol and, consequently, increased the permeate concentration. As a result, more than seventy fold increase of benzyl alcohol in the permeate was possible at an operating temperature of 40°C. © 1992. 
PERVAPORATION; BENZYL ALCOHOL; POLYDIMETHYLSILOXANE MEMBRANE; TRANSPORT MODEL