Facilitated transport of CO2 through immobilized liquid membrane

Mohamed H. Al Marzouqi, Mohamed A. Abdulkarim, Sayed A. Marzouk, Muftah H. El-Naas, Hasan M. Hasanain

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


Selective removal of acid gases from a contaminated gas stream was studied using four amines (diethylenetriamine (DETA), diaminoethane (DAE), diethylamine (DEYA), and bis(2-ethylhexyl)amine (BEHA)) as immobilized liquids in a facilitated transport membrane. The effect of amine concentration, CO 2 partial pressure, and operating temperature on the permeance of CO2 and CH4 was investigated for each aqueous amine solution. The observed CO2 permeance decreased with increasing CO2 feed pressure, whereas the permeance of CH4 remained constant for all tested amines. The permeance of CO2 and the selectivity were in the order DETA > DAE > BEHA & DEYA. This order is related to the number of nitrogen atoms per amine molecule, which can be correlated to loading capacity and consequently to amine reactivity with CO2. The permeance of CO2 in 2 M DETA increased with increasing temperature. The permeance of CO2 using DETA was about 4 times that obtained using diethanolamine (DEA) and monoethanolamine (MEA), which are the most commonly used solvents in industrial applications.

Original languageEnglish
Pages (from-to)9273-9278
Number of pages6
JournalIndustrial and Engineering Chemistry Research
Issue number24
Publication statusPublished - Nov 23 2005

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Industrial and Manufacturing Engineering


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