Distillation with nanoporous or coated hollow fibers

Bin Chung Jae, Jonathan P. DeRocher, E. L. Cussler

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


Distillation of methanol-ethanol solutions in a small column containing hollow fibers is independent of whether the fibers are nanoporous or covered with a thin, highly permeable coating. The hollow fibers do not provide selectivity but serve as a form of structured packing, so that the fluid mechanics in the column is not constrained by loading and flooding. The overall mass transfer coefficient based on a vapor side driving force and measured across the fibers is around 0.03 cm/s, the result of roughly equal mass transfer resistances in the condensate, the membrane, and the vapor. Further improvements in this form of distillation will require significant changes in module design, which reduce each of these three resistances.

Original languageEnglish (US)
Pages (from-to)3-10
Number of pages8
JournalJournal of Membrane Science
Issue number1-2
StatePublished - Jul 15 2005


  • Fiber membranes
  • Microporous and porous membranes
  • Modules
  • Organic separations

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