Dehydration of Organic Solutions by a Recirculated Air Sweep Pervaporation Process Using Anion-Exchange Hollow Fibers
DOI:
https://doi.org/10.6000/1929-6037.2016.05.02.3Keywords:
Solvent dehydration, pervaporation, anion exchange hollow fibers, dielectric constant.Abstract
An air sweep pervaporation process with thin anion-exchange hollow fibers was investigated for various water-organic solvent mixtures at different operating conditions. It was found that flux and separation factor increased with a decrease of the dielectric constant of the organic solvent. When the temperature of the process was increased, the flux increased. At feed temperatures of 65–70°C it was possible to reduce the water concentration in a 3–10% isopropyl alcohol (IPA) solution to 0.5%. The energy requirement for decreasing the water concentration in IPA from 3–10% to 0.5% was 100–225 kWh ton-1.
References
Cabasso I, Korngold E, Lie ZZ. On the separation of alcohol/water mixtures by polyethylene ion exchange membrane. J Polym Sci Lett Edn 1985; 23: 577. http://dx.doi.org/10.1002/pol.1985.130231106 DOI: https://doi.org/10.1002/pol.1985.130231106
Cabasso I, Korngold E. Membrane permeation process for dehydration of organic liquids mixtures using sulphonated ion-exchange polyalkene membranes. U.S.A. Patent 4728429, 1988.
Freger V, Korin E, Wisniak J, Korngold E. Preferential sorption in ion-exchange pervaporation membranes; sorption of water-ethanol mixture by sodium polyethylene sulphonate. J Membrane Sci 1997; 128: 151. http://dx.doi.org/10.1016/S0376-7388(96)00306-7 DOI: https://doi.org/10.1016/S0376-7388(96)00306-7
Freger V, Korin E, Wisniak J, Korngold E. Transport mechanism in ion exchange pervaporation membranes. J Membr Sci 1997; 133: 255. http://dx.doi.org/10.1016/S0376-7388(97)00080-X DOI: https://doi.org/10.1016/S0376-7388(97)00080-X
Freger V, Korin E, Wisniak J, Korngold E, Ise M, Kreuer KD. Diffusion of water and ethanol in ion- exchange membrane: limits of the geometric approach. J Membr Sci 1999; 160: 213-224. http://dx.doi.org/10.1016/S0376-7388(99)00084-8 DOI: https://doi.org/10.1016/S0376-7388(99)00084-8
Freger V, Korin E, Wisniak J, Korngold E. Measurement of sorption in hydrophilic pervaporation: sorption modes and consistency of the data. J Membr Sci 2000; 164: 251-256. http://dx.doi.org/10.1016/S0376-7388(99)00198-2 DOI: https://doi.org/10.1016/S0376-7388(99)00198-2
Korngold E, Zisner E, Wachs R. Separation of component of organic liquids. Israel Patent No 129163 (2002). U.S.A. patent No. 6913696 (2005).
Kujawski W, Krajewski SR. Sweeping gas pervaporation with hollow-fiber ion-exchange membranes. Desalination 2004; 162(1-3): 129-135. http://dx.doi.org/10.1016/S0011-9164(04)00036-0 DOI: https://doi.org/10.1016/S0011-9164(04)00036-0
Korngold E, Korin E, Ladizhensky I. Water desalination by pervaporation with hollow fiber membranes. Desalination 1996; 107: 121-129. http://dx.doi.org/10.1016/S0011-9164(96)00157-9 DOI: https://doi.org/10.1016/S0011-9164(96)00157-9
Korin E, Ladizhensky I, Korngold E. Hydrophilic hollow fiber membranes for water desalination by the pervaporation method. Chem Eng Process 1996; 35: 451-457. http://dx.doi.org/10.1016/S0255-2701(96)04157-8 DOI: https://doi.org/10.1016/S0255-2701(96)04157-8
Ion Exchange, By: Helfferich, Friedrich G. New York: McGraw-Hill, 1962; p. 624
Downloads
Published
How to Cite
Issue
Section
License
Policy for Journals/Articles with Open Access
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are permitted and encouraged to post links to their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work
Policy for Journals / Manuscript with Paid Access
Authors who publish with this journal agree to the following terms:
- Publisher retain copyright .
- Authors are permitted and encouraged to post links to their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work .
