Abstract
Pervaporative dehydration of acetic acid, ethyl alcohol, isopropyl alcohol, and acetone over the entire concentration range of 0-100wt% is studied using acrylonitrile-maleic anhydride copolymer membrane. The membrane exhibits reasonable performance with respect to both separation factor and permeance (11.0 and 279.4 g/m2.hr./bar, respectively, at 92wt% feed cone, of water) for acetone dehydration. Dehydration performances of acetic acid and ethyl alcohol are comparable (permeance and separation factor of water for its mixture with acetic acid is 119.5 gm/m2.hr./bar and 2.4, respectively, while the same for its mixture with ethyl alcohol is 125.4 gm/m2.hr./bar and 2.5, respectively, at 50wt% feed) over the whole concentration range. Isopropyl alcohol shows the best separation factor for water at very low alcohol concentration (8.7 at 2.5 wt% feed) with lowest permeance among the four systems of separations.
Original language | English (US) |
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Pages (from-to) | 1583-1596 |
Number of pages | 14 |
Journal | Separation Science and Technology |
Volume | 40 |
Issue number | 8 |
DOIs | |
State | Published - 2005 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Chemistry
- General Chemical Engineering
- Process Chemistry and Technology
- Filtration and Separation
Keywords
- Acetic acid
- Acetone
- Alcohols
- Dehydration
- Pervaporation
- Poly(acrylonitrile-co-maleic anhydride)