Burshe, M. C. ; Sawant, S. B. ; Joshi, J. B. ; Pangarkar, V. G. (1997) Sorption and permeation of binary water-alcohol systems through PVA membranes crosslinked with multifunctional crosslinking agents Separation and Purification Technology, 12 (2). pp. 145-156. ISSN 1383-5866
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S1383-5866(97)00042-7
Abstract
Sorption and permeation of aqueous alcohol (C1-C4) through PVA membrane cross-linked with a multifunctional cross-linker is reported. The effect of temperature, feed concentration, cross-linker loading and the shape and size of the permeating species on pervaporation characteristics is investigated. Sorption isotherms of cross-linked PVA are obtained for the aqueous alcohol systems namely water+methanol, +ethanol, +n-propanol, +isopropanol, +n-butanol and +isobutanol. Values of activation energy for permeation (ΔEp), diffusion (ΔEd) and heat of sorption (ΔHs) for water through cross-linked PVA are estimated. The value of ΔEd for water was found to vary for all the water-alcohol systems (20-50 kJ mole-1) covered in this work.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Alcohols C1-C4; Cross-linkers; Dehydration; Pervaporation; Poly(vinyl alcohol) |
| ID Code: | 61144 |
| Deposited On: | 13 Sep 2011 11:02 |
| Last Modified: | 13 Sep 2011 11:02 |
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