Transfer processes in polymer membranes. Part 1
DOI:
https://doi.org/10.15587/1729-4061.2013.9181Keywords:
pervaporation, polymer membrane, organic mixture, permeate.Abstract
During the membrane separation of liquid and gaseous mixtures, attention is paid to the physical mechanisms of the interaction of the separating substances with the membrane. The problem is to determine the optimal criteria of selection of the membrane material for the solution of the specific tasks of separation, as well as determining the set of the physical parameters of external influence for precise control of the process of the membrane separation.The passage of molecules and/or atoms in a non-porous polymeric membrane (pervaporation) can be described using the so-called dual model (dissolution-diffusion). The intensity of the sorption or dissolution depends on the energy of the dissolution of the separate components in the liquid polymer. The components with lower energy of dissolution are sorbed preferentially. The diffusion through the membrane depends on the type of polymer, the components of the original liquid and the process parameters. The transfer mechanism also depends on the aggregate state of raw materials.
The article provides the results of the research on the separation of components from the organic multicomponent mixtures and the study of the effect of the membrane ”swelling”.
References
- M. H. Kloppfer and B.Flaconneche. Transport Properties of Gases in Polymers: Bibliographic Review. Oil & Gas Science and Technology, Rev. IFP, Vol 56 (2001), No. 3, pp. 223 – 244.
- Marion K. Buckley-Smith. The Use of Solubility Parameters to select membrane materials for Pervaporation of organic mixtures, The University of WAIKATO, Hamilton, New Zealand, January, 2006.
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Copyright (c) 2014 Инесса Анатольевна Буртная, Людмила Ивановна Ружинская, Отар Отарович Гачечиладзе, Николай Васильевич Шафаренко
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