Journal of Solution Chemistry

, Volume 48, Issue 4, pp 489–501 | Cite as

Experimental Study of Density, Viscosity and Equilibrium Carbon Dioxide Solubility in Some Aqueous Alkanolamine Solutions

  • Ali Rahimi
  • Ali T. Zoghi
  • Farzaneh FeyziEmail author
  • Amir Hossein Jalili


In this work, equilibrium solubility of CO2 in aqueous blends of different amines is examined. The amines used are methyldiethanolamine (MDEA), N,N-dimethylaminoethanol (DMAE), N,N-diethylaminoethanol (DEAE), 2-(2-aminoethylamino)ethanol (AEEA), and 3-methylamino propylamine (MAPA). New equilibrium solubility data for CO2 in aqueous solutions of DMAE + MAPA, DMAE + AEEA, MDEA + MAPA, MDEA + AEEA, DEAE + MAPA and DEAE + AEEA over a range of low pressures are obtained. Each of the solutions contains 40 wt% of a tertiary amine (DMAE, MDEA, DEAE) and 5 wt% of a primary/secondary amine (MAPA, AEEA). The experimental temperature was set to 313.15 K and the measured CO2 loading was in the range of 0.274–4.563 (mol CO2 per kg of solution). In order to make a better comparison, viscosities and densities of the amine solutions were also measured at 303.15–353.15 K. Experiments show that the aqueous DMAE + MAPA blend has the highest absorption capacity, and at the same time, its viscosity and density are in a desirable range.


CO2 solubility Aqueous blends of amines Methyldiethanolamine N,N-Dimethylaminoethanol N,N-Diethylaminoethanol 3-Methylamino propylamine 2-(2-Aminoethylamino)ethanol 



The authors greatly appreciate the financial support for this research provided by the Research Institute of Petroleum Industries (RIPI).


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Ali Rahimi
    • 1
  • Ali T. Zoghi
    • 2
  • Farzaneh Feyzi
    • 1
    Email author
  • Amir Hossein Jalili
    • 2
  1. 1.Thermodynamics Research Laboratory, School of Chemical EngineeringIran University of Science and TechnologyTehranIran
  2. 2.Gas Refining Technology Group, Gas Research DivisionResearch Institute of Petroleum Industry (RIPI)TehranIran

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