Study on microporous supported ionic liquid membranes for carbon dioxide capture

Li Hua Cheng, Muhammad Syukri Abd Rahaman, Ru Yao, Lin Zhang, Xin Hua Xu, Huan Lin Chen, Juin Yih Lai, Kuo Lun Tung

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

To capture carbon dioxide directly from ambient air, the fabrication of supported ionic liquid membranes (SILMs) on asymmetric and symmetric microporous poly(vinylidene fluoride) (PVDF) membranes were studied. The effect of support membrane structure on the IL loading, the stability of fabricated SILMs, and the carbon dioxide (CO2) capturing abilities of both SILMs were evaluated. The evaluations include the gas permeation of pure CO2 and nitrogen (N2), the mixed CO2-N2 gases containing 50%, 10% and 1% CO2, and the directly compressed ambient air. The results demonstrated that pure CO2 showed the highest permeance, followed by CO2-air and then N2. Compared with asymmetric SILMs which had higher gas permeance, the symmetric SILMs had better selectivity for CO2/N2, to more than 20 of CO2/N2 selectivity, for both single and mixed gases. The SILMs also were found to be capable of capturing CO2 from air from 2 to more than 5 of CO2/air selectivity for separation of air enriched with low CO2 concentrations (10%, 1% and zero) as the transmembrane pressure increased to 0.25MPa. Thus, this work might provide a potential method for sequestering CO2 directly from atmosphere to avoid the need for extensive CO2-transportation.

Original languageEnglish
Pages (from-to)82-90
Number of pages9
JournalInternational Journal of Greenhouse Gas Control
Volume21
DOIs
Publication statusPublished - 2014
Externally publishedYes

Fingerprint

Liquid membranes
Ionic liquids
Carbon dioxide
carbon dioxide
membrane
Air
Gases
air
gas
ambient air
Membrane structures
Permeation
compressed air
ionic liquid
fluoride
Nitrogen
Membranes
Fabrication
atmosphere
nitrogen

Keywords

  • Asymmetric membrane
  • CO capture
  • PVDF
  • SILMs
  • Symmetric membrane

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Pollution
  • Energy(all)
  • Management, Monitoring, Policy and Law

Cite this

Study on microporous supported ionic liquid membranes for carbon dioxide capture. / Cheng, Li Hua; Abd Rahaman, Muhammad Syukri; Yao, Ru; Zhang, Lin; Xu, Xin Hua; Chen, Huan Lin; Lai, Juin Yih; Tung, Kuo Lun.

In: International Journal of Greenhouse Gas Control, Vol. 21, 2014, p. 82-90.

Research output: Contribution to journalArticle

Cheng, Li Hua ; Abd Rahaman, Muhammad Syukri ; Yao, Ru ; Zhang, Lin ; Xu, Xin Hua ; Chen, Huan Lin ; Lai, Juin Yih ; Tung, Kuo Lun. / Study on microporous supported ionic liquid membranes for carbon dioxide capture. In: International Journal of Greenhouse Gas Control. 2014 ; Vol. 21. pp. 82-90.
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