Nonlinear, coupled mass transfer through a dense membrane

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Concentration and/or space-dependent diffusional mass transport through a dense membrane were investigated. A quasi-analytical approach is given in order to calculate the concentration distribution in the membrane and the mass transfer rates in the case of a single component as well as of binary component diffusion transport. Both properties can be expressed by closed mathematical expressions independently of the concentration dependency function of the diffusion coefficient. The coupled binary diffusion was described by the Maxwell-Stefan theory. Two examples of mass transport, namely binary pervaporation of water/ethanol as well as binary separation of methane/ethane by a zeolite membrane, were calculated, which demonstrate the simplicity of the model equations.

Original languageEnglish
Pages (from-to)345-354
Number of pages10
JournalDesalination
Volume163
Issue number1-3
DOIs
Publication statusPublished - Mar 10 2004

Fingerprint

mass transfer
Mass transfer
mass transport
membrane
Membranes
Zeolites
Pervaporation
Ethane
Methane
ethane
zeolite
ethanol
Ethanol
methane
Water
water
distribution
rate

Keywords

  • Concentration dependent diffusion
  • Concentration profile
  • Coupling diffusion
  • Mass transfer rate
  • Membrane processes

ASJC Scopus subject areas

  • Filtration and Separation

Cite this

Nonlinear, coupled mass transfer through a dense membrane. / Nagy, E.

In: Desalination, Vol. 163, No. 1-3, 10.03.2004, p. 345-354.

Research output: Contribution to journalArticle

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