Toluene impurity effects on CO2 separation using a hollow fiber membrane for natural gas

Imona C. Omole, Dhaval A. Bhandari, Stephen J. Miller, William J. Koros

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The performance of defect-free cross-linkable polyimide asymmetric hollow fiber membranes was characterized using an aggressive feed stream containing up to 1000ppm toluene. The membrane was shown to be stable against toluene-induced plasticization compared with analogs made from Matrimid®, a commercial polyimide. Permeation and sorption analysis suggest that the introduction of toluene vapors in the feed subjects the membrane to antiplasticization, as the permeance decreases significantly (to less than 30%) under the most aggressive conditions tested. Separation efficiencies reflected by permselectivities were less affected. The effect of the toluene on the membrane was shown to be reversible when the toluene was removed. © 2010 Elsevier B.V.
Original languageEnglish (US)
Pages (from-to)490-498
Number of pages9
JournalJournal of Membrane Science
Volume369
Issue number1-2
DOIs
StatePublished - Mar 2011
Externally publishedYes

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