Supported ionic liquid membranes immobilized with carbonic anhydrases for CO2 transport at high temperatures

M. Yahia Abdelrahim, Carla F. Martins, Luísa A. Neves, Clemente Capasso, Claudiu T. Supuran, Isabel M. Coelhoso, João G. Crespo, Mihail Barboiu

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

This work describes a thermostable biomimetic membrane system using supported ionic-liquid membranes (SILMs) and an “extremo-enzyme” that enhance the selective transport of CO2 at high temperatures (up to 373 K). The membranes are impregnated with the thermophilic Sulfurihydrogenibium yellowstonense carbonic anhydrase SspCA isozyme and are expected to fill the gap between the thermal stability of biocatalyst and highly membrane performance for CO2 separation processes at high temperatures. Membrane stability, gas permeability and ideal selectivity were determined in the membranes developed. The results obtained show that the SILMs prepared present interesting permeability (PCO2=733.73 barrer) at high temperatures (up to 373 K) and a good transport selectivity towards CO2 against N2CO2/N2=35.6). These results illustrate the potential of using this approach to further enhance the performance of enzyme impregnated SILMs for removal of CO2 from flue gas streams.

Original languageEnglish
Pages (from-to)225-230
Number of pages6
JournalJournal of Membrane Science
Volume528
DOIs
Publication statusPublished - 15 Apr 2017

Keywords

  • Carbonic anhydrase
  • CO removal
  • Permeability
  • Selectivity
  • Supported ionic liquid membranes (SILMs)

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