Performance of different hollow fiber membranes for seawater desalination using membrane distillation

Lijo Francis, Noreddine Ghaffour, Ahmad S. Al-Saadi, Gary Amy

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8 Citations (Scopus)

Abstract

Membrane distillation requires a highly porous hydrophobic membrane with low surface energy. In this paper, we compare the direct contact membrane distillation (DCMD) performances of four different types of in-house fabricated hollow fiber membranes and two different commercially available hollow fiber membranes. Hollow fiber membranes are fabricated using wet-jet phase inversion technique and the polymeric matrices used for the fabrication are polyvinylidine fluoride (PVDF) and polyvinyl chloride (PVC). Commercial hollow fiber membrane materials are made of polytetrafluoroethylene (PTFE) and polypropylene (PP). PVDF hollow fibers showed a superior performance among all the hollow fibers tested in the DCMD process and gave a water vapor flux of 31 kg m−2h−1 at a feed and coolant inlet temperatures of 80 and 20°C, respectively. Under the same conditions, the water vapor flux observed for PP, PTFE, and PVC hollow fiber membranes are 13, 11, and 6 kg m−2h−1, respectively, with 99.99% salt rejection observed for all membranes used.

Original languageEnglish
Pages (from-to)2786-2791
Number of pages6
JournalDesalination and Water Treatment
Volume55
Issue number10
DOIs
Publication statusPublished - 4 Sep 2015
Externally publishedYes

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Keywords

  • Hollow fiber membranes
  • Membrane fabrication
  • Membrane technology
  • Partial vapor pressure
  • Water vapor flux

ASJC Scopus subject areas

  • Water Science and Technology
  • Ocean Engineering
  • Pollution

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