Design of dense membrane separation units: Computational inconsistencies for variable permeability conditions
type: Distribution
access URL: https://hal.science/hal-00078274
format: HTML
issued: 2026-05-14T19:49:08.415546
modified: 2026-05-14T19:49:08.393506

test_moissonnage_selune
type: Agent

Design of dense membrane separation units: Computational inconsistencies for variable permeability conditions
type: Dataset
contact point: Organization
  fn: CCSD
keyword: permeability
keyword: inconsistency
keyword: journal-articles
keyword: infoeu-reposemanticsarticle
keyword: membranes
keyword: design
keyword: spigprocengineering-sciences-physicschemical-and-process-engineering
keyword: mass-transfer
landing page: 0255-2701
description: Numerous studies have been already reported for the rigorous design of dense membrane separation units. These are classically based on the solution-diffusion framework, making use of the permeability concept, in order to compute transmembrane fluxes. While variable permeability conditions are expected to hold for a great number of situations (gas permeation through glassy polymers, vapor and liquid permeation), the incidence of this particular situation has been seldom addressed. It is tempting in that case to keep the solution-diffusion framework, based on a combination of permeability and driving force terms. It is shown in this work that such a strategy can potentially induce major inconsistencies in terms of fluxes computations, which may remain unidentified if complimentary tests are not performed. A new flux expression, consistent with the solution-diffusion approach, is proposed in order to circumvent this limitation and its application to a case study (acetone/toluene separation through a silicone membrane) is reported.
issued: 2026-05-14T19:49:08.411702
language: en
modified: 2026-05-14T19:49:08.411707