Alcohol recovery with pervaporation: Effect of high 2-butanol concentration

Poly dimethyl siloxane (PDMS) membrane was used to separate a synthetic mixture consisting of isopropanol, ethanol, 2‐butanol, and n‐butanol using the pervaporation separation technique. These alcohols are found to occur in naphtha reformate as a result of vapor‐phase reaction of the alkenes in the...

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Bibliographic Details
Published in:Journal of applied polymer science 2001-12, Vol.82 (13), p.3164-3171
Main Authors: Shaban, Habib I., Ali, Sami H., Mathew, Johnson
Format: Article
Language:English
Subjects:
alcohols
Applied sciences
Exact sciences and technology
Exchange resins and membranes
Forms of application and semi-finished materials
naphtha reformate
PDMS membrane
pervaporation
Polymer industry, paints, wood
separation factor
separation index
Technology of polymers
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Summary:Poly dimethyl siloxane (PDMS) membrane was used to separate a synthetic mixture consisting of isopropanol, ethanol, 2‐butanol, and n‐butanol using the pervaporation separation technique. These alcohols are found to occur in naphtha reformate as a result of vapor‐phase reaction of the alkenes in the presence of water and a catalyst. In this work the pervaporation separation efficiency of PDMS membrane toward different alcohols was evaluated by estimation of fluxes and separation factors at different temperatures and pressures. The coupling effect resulting from the presence of identical functional groups was investigated. The activation energies for the transport of each of these alcohols through the membrane were also evaluated. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 3164–3171, 2001
ISSN:0021-8995
1097-4628
DOI:10.1002/app.2174