Pervaporation separation of ethanol–water mixtures using crosslinked blended polyacrylic acid (PAA)–nylon 66 membranes

✍ Scribed by X. P. Zhao; R. Y. M. Huang

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 578 KB
• Volume: 41
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1990.070410918

✦ Synopsis

Abstract

The pervaporation separation of ethanol–water mixtures was carried out through a series of ionically crosslinked polyacrylic acid (PAA)–nylon 66 blended membranes crosslinked to varying degrees in aluminum nitrate solution. Optimum pervaporation results were obtained from crosslinked blends containing 75 wt % nylon 66 and 25 wt % PAA. The optimum crosslinking time was found to be between 30 and 40 h. The optimum operating temperatures of the pervaporation runs were found to be 2–3°C below the boiling points when the highest permeation flux reached 857.6 (g/m^2^ h) and the best separation factors (water/ethanol) were 10.1.