Study of interaction between butyl alcohols and cellulose acetate polymser with reverse osmosis, high pressure liquid chromatography and pervaporation methods

T. Bálint, E. Nagy, M. Kraxner

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The purpose of the present work was to investigate experimentally the interactions among polymer, solvent and solute and to point out their similarity of character in reverse osmosis (RO), high pressure liquid chromatography (HPLC) and pervaporation (PV). Four butanol-water systems were investigated by reverse osmosis, pervaporation and HPLC using cellulose acetate (CA) membranes. The experimental data were processed by the theory of the preferential sorption-capillary flow model. Furthermore, pervaporation data became interpretable physico-chemically by taking into account vapour-liquid equilibrium, capillary interaction and evaporation-free enthalpy alteration. The RO and PV data obtained showed more or less good correlation. The deviation from good correlation depended not only on research errors, but presumably also on moving from isothermal to adiabatic evaporation. The experimental data and their cross-checking offer a new hypothesis for explaining the details of PV separation. However, its justification needs further investigation and more experimental data.

Original languageEnglish
Pages (from-to)101-114
Number of pages14
JournalJournal of Membrane Science
Volume78
Issue number1-2
DOIs
Publication statusPublished - Mar 25 1993

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Keywords

  • butanol-water system
  • membrane separation
  • pervaporation
  • reverse osmosis

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

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