Membrane and Water Treatment

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Effect of different conditions on pervaporation dehydration in CA/NYL66 blend membrane

  • Kazemzadeh, Akram (Department of Chemistry, Neyshabur Branch, Islamic Azad University) ;
  • Mousavi, Seyed M. (Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad) ;
  • Mehrzad, Jamshid (Department of Chemistry, Neyshabur Branch, Islamic Azad University) ;
  • Motavalizadehkakhky, Alireza (Department of Chemistry, Neyshabur Branch, Islamic Azad University) ;
  • Hosseiny, Malihesadat (Department of Chemistry, Neyshabur Branch, Islamic Azad University)
  • Received : 2018.12.30
  • Accepted : 2019.09.02
  • Published : 2019.11.25
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Abstract

In this study, cellulose acetate (CA) / nylon66 (NYL66) (95/5) blend membranes with different thicknesses were prepared by a solvent evaporation method. The effects of membrane thickness (almost $7-25{\mu}m$), feed concentration (70-95 wt.% isopropanol), and feed temperature ($30-60^{\circ}C$) were investigated on the performance of membrane in the separation of isopropanol-water mixtures. With regard to the results of sorption experiments, it was found that the increase of feed temperature enhanced the overall sorption while by increasing feed concentration, the overall sorption passed through a maximum value at 70 wt. % isopropanol (IPA). The best separation factor 3080.51 was gained at high isopropanol concentration 95 wt.%, low feed temperature $30^{\circ}C$, and high membrane thickness $24.62{\mu}m$. Regarding the pervaporation separation index, the obtained results showed that proper values for the thickness of membrane, feed temperature, and isopropanol concentration in feed were $24.62{\mu}m$, $40^{\circ}C$, and 70 wt.%, respectively.

Keywords

References

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