Chapter

Synthetic Membranes: Science, Engineering and Applications

Volume 181 of the series NATO ASI Series pp 403-436

Pervaporation

  • Philippe AptelAffiliated withLaboratoire de Génie Chimique (CNRS L.A. 192), Université Paul Sabatier
  • , Jean NéelAffiliated withLaboratoire de Chimie-Physique Macromoléculaire (CNRS E.R.A. 23), Ecole Nationale Supérieure des Industries Chimiques

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Abstract

The basic principles of the pervaporation process are presented in an overall view intended as an introduction to this unconventional technique. The mass transfer within, the membrane for pure liquid and for liquid mixtures is discussed. Limitations due to concentration polarization and temperature drop at the membrane interface are considered. Basic calculations are given for cross-flow continuous pervaporation and some potential applications are explained. Possible improvements of both membrane and. process design are reviewed.