Development of micro-scale hollow fiber ultrafiltration membranes

R. Halaui, A. Moldavsky, Y. Cohen, R. Semiat, E. Zussman

Research output: Contribution to journalArticlepeer-review


This work describes the development of micro-scale hollow fibers (HF) ultrafiltration membrane module using asymmetric microtubes produced by the co-electrospinning technique. Poly(caprolactone) (PCL) microtubes of average inner diameter of 4μm with wall thickness of 0.9μm and poly(vinylidenefluoride-co-hexafluoropropylene) (PVDF-HFP) with average inner diameter of 1.4μm, wall thickness of 0.9μm have been successfully achieved. The retention of the water soluble polymer poly(acrylic acid-co-maleic acid), sodium salt (50kDa) (PAA) (as a model contaminant) was used to evaluate the performance of HF modules. Applying pressure of up to 3.5bars to the HF modules of PCL and PVDF-HFP of 5.4cm in length have shown typical flux of 30-60L/m2h, typical rejection of 25-35% and 28-40% correspondingly, and typical recovery of 20-37%. These results show a great potential in the use of micro-scale HF membranes for water purification.

Original languageEnglish
Pages (from-to)370-377
Number of pages8
JournalJournal of Membrane Science
Issue number1-2
StatePublished - 1 Sep 2011


  • Electrospinning
  • Hollow fiber
  • Membrane
  • Rejection
  • UF

All Science Journal Classification (ASJC) codes

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


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