Polybenzimidazole (PBI) nanofiltration hollow fiber membranes applied in forward osmosis process

Kai Yu Wang, Tai-Shung Chung*, Jian Jun Qin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

206 Scopus citations

Abstract

For the first time, the potential of polybenzimidazole (PBI) nanofiltration membrane as a forward osmosis membrane has been investigated. PBI was chosen mainly because of its unique nanofiltration characteristics, robust mechanical strength and excellent chemical stability. The MgCl2 solutions with different concentrations and other different salt solutions were employed as draw solutions to test the water permeation flux through the PBI membrane during forward osmosis. High water permeation flux and excellent salt selectivity were achieved by using the PBI nanofiltration membrane which has a narrow pore size distribution. Effects of membrane morphology, operation conditions and flowing patterns of two feed streams within the membrane module on water transport performance have been investigated. It may conclude that PBI nanofiltration membrane is a promising candidate as a forward osmosis (FO) membrane.

Original languageEnglish (US)
Pages (from-to)6-12
Number of pages7
JournalJournal of Membrane Science
Volume300
Issue number1-2
DOIs
StatePublished - Aug 15 2007

Keywords

  • Forward osmosis
  • Hollow fiber
  • Membrane separation
  • Nanofiltration
  • Polybenzimidazole

ASJC Scopus subject areas

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

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