Removal characteristics of CO2 using aqueous MEA/AMP solutions in the absorption and regeneration process

J Environ Sci (China). 2009;21(7):907-13. doi: 10.1016/s1001-0742(08)62360-8.


The carbon dioxide (CO2) removal efficiency, reaction rate, and CO2 loading into aqueous blended monoethanolamine (MEA) + 2-amino-2-methyl-1-propanol (AMP) solutions to enhance absorption characteristics of MEA and AMP were carried out by the absorption/regeneration process. As a result, compared to aqueous MEA and AMP solutions, aqueous blended MEA + AMP solutions have a higher CO2 loading than MEA and a higher reaction rate than AMP. The CO2 loading of rich amine of aqueous 18 wt.% MEA + 12 wt.% AMP solution was 0.62 mol CO2/mol amine, which is 51.2% more than 30 wt.% MEA (0.41 mol CO2/mol amine). Consequently, blending MEA and AMP could be an effective way to design considering economical efficiency and used to operate absorber for a long time.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorption
  • Air Pollutants / chemistry
  • Air Pollutants / isolation & purification
  • Carbon Dioxide / chemistry*
  • Carbon Dioxide / isolation & purification*
  • Ethanolamine / chemistry*
  • Propanolamines / chemistry*
  • Solutions / chemistry*


  • Air Pollutants
  • Propanolamines
  • Solutions
  • Carbon Dioxide
  • Ethanolamine
  • 2-amino-2-methyl-1-propanol