Separation of Pyridine/Water Solutions Using Pervaporation

Patrick C. Joyce, Kevin M. Devine, C. Stewart Slater

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Abstract

Studies were performed on the separation of pyridine/water solutions using pervaporation. Organic permeation experiments were performed using a ‘silicalite’-filled silicone composite membrane. Effects of feed concentration, feed temperature, and permeate side pressure were examined. Benchmark conditions of 5.0 wt% pyridine, 50°C, and 2 torr were chosen. At the benchmark conditions, an organic selectivity of 34 and a permeate flux of 0.428 kg/m2h was achieved. An increase in feed concentration caused an increase in both the permeate concentration and flux, but caused a decrease in the selectivity. Also, permeate compositions far exceeded standard vapor-liquid equilibrium. Temperature had an Arrhenius-type relationship with regard to flux, but had no effect on the selectivity. Increasing the permeate pressure caused a steady decrease in permeate flux and also decreased the permeate composition and selectivity.

Original languageEnglish (US)
Pages (from-to)2145-2158
Number of pages14
JournalSeparation Science and Technology
Volume30
Issue number10
DOIs
Publication statusPublished - Jan 1 1995

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All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Process Chemistry and Technology
  • Filtration and Separation

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