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Mass transport of aliphatic alcohols and esters through hydrophobic pervaporation membranes

Trifunovic, Olivera LU and Trägårdh, Gun LU (2006) In Separation and Purification Technology 50(1). p.51-61
Abstract
Mass transport in pervaporation of multi-component mixtures of homologous series of alcohols and esters through composite pervaporation membranes has been investigated. Pervaporation experiments were performed in a concentration range relevant for aroma recovery, using a membrane with an active layer of poly (octyl) methylsiloxane (POMS) caste on a porous polyetherimide (PEI) support. The fluxes, selectivities and average diffusion coefficients were determined for each compound studied and were related to the properties of the permeating molecule. The reduction in the selectivity of the higher homologues of the alcohol series with increase in feed concentration was explained by a decrease in diffusion coefficient with respect to feed... (More)
Mass transport in pervaporation of multi-component mixtures of homologous series of alcohols and esters through composite pervaporation membranes has been investigated. Pervaporation experiments were performed in a concentration range relevant for aroma recovery, using a membrane with an active layer of poly (octyl) methylsiloxane (POMS) caste on a porous polyetherimide (PEI) support. The fluxes, selectivities and average diffusion coefficients were determined for each compound studied and were related to the properties of the permeating molecule. The reduction in the selectivity of the higher homologues of the alcohol series with increase in feed concentration was explained by a decrease in diffusion coefficient with respect to feed concentration. There was evidence of a tendency towards aggregation of water molecules, lower homologues of alcohol series and the first two homologues of the ester series, which resulted in a decrease in diffusivity for the polar, lower homologues in both series. (C) 2005 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
support layer, diffusion, hydrophobic pervaporation, mass transport
in
Separation and Purification Technology
volume
50
issue
1
pages
51 - 61
publisher
Elsevier
external identifiers
  • wos:000238301200008
  • scopus:33646460765
ISSN
1873-3794
DOI
10.1016/j.seppur.2005.11.007
language
English
LU publication?
yes
id
2e6893f3-c2a5-44da-86a1-361920a5d90b (old id 405822)
date added to LUP
2016-04-01 11:56:59
date last changed
2020-01-12 08:55:23
@article{2e6893f3-c2a5-44da-86a1-361920a5d90b,
  abstract     = {Mass transport in pervaporation of multi-component mixtures of homologous series of alcohols and esters through composite pervaporation membranes has been investigated. Pervaporation experiments were performed in a concentration range relevant for aroma recovery, using a membrane with an active layer of poly (octyl) methylsiloxane (POMS) caste on a porous polyetherimide (PEI) support. The fluxes, selectivities and average diffusion coefficients were determined for each compound studied and were related to the properties of the permeating molecule. The reduction in the selectivity of the higher homologues of the alcohol series with increase in feed concentration was explained by a decrease in diffusion coefficient with respect to feed concentration. There was evidence of a tendency towards aggregation of water molecules, lower homologues of alcohol series and the first two homologues of the ester series, which resulted in a decrease in diffusivity for the polar, lower homologues in both series. (C) 2005 Elsevier B.V. All rights reserved.},
  author       = {Trifunovic, Olivera and Trägårdh, Gun},
  issn         = {1873-3794},
  language     = {eng},
  number       = {1},
  pages        = {51--61},
  publisher    = {Elsevier},
  series       = {Separation and Purification Technology},
  title        = {Mass transport of aliphatic alcohols and esters through hydrophobic pervaporation membranes},
  url          = {http://dx.doi.org/10.1016/j.seppur.2005.11.007},
  doi          = {10.1016/j.seppur.2005.11.007},
  volume       = {50},
  year         = {2006},
}