Regeneration Energy Analysis of Aqueous Tri-Solvent Blends Containing 2-Amino-2-Methyl-1-Propanol (AMP), Methyldiethanolamine (MDEA) and Diethylenetriamine (DETA) for Carbon Dioxide (CO2) Capture

Chikezie Nwaoha, Chintana Saiwan, Teeradet Supap, Raphael Idem, Paitoon Tontiwachwuthikul, Jaber Al Marri, Abdelbaki Benamor

Research output: Contribution to journalConference article

3 Citations (Scopus)


This study investigated the contribution of absorption heat, sensible heat and heat of vaporization towards the regeneration energy (Qreg, kJ/g-CO2) of AMP-MDEA-DETA tri-solvent blends. The experiment was conducted at atmospheric pressure and 363 K. Their CO2 absorption prior to their regeneration was conducted at 313 K, 101.3 kPa and 15.1 v/v% CO2. The regeneration energy was estimated using two different methods (experimental and correlation) and the results showed similar trend. Results showed that the AMP-MDEA-DETA blends have lower regeneration energy than MEA and this was due to a much lower sensible heat of the blends. It was also discovered that higher absorption heats does not necessarily indicate higher regeneration energy, rather the effects of both sensible heat and/or heat of vaporization can greatly affect the regeneration energy.

Original languageEnglish
Pages (from-to)2039-2046
Number of pages8
JournalEnergy Procedia
Publication statusPublished - 1 Jan 2017
Externally publishedYes



  • 2-amino-2-methyl-1-propanol (AMP)
  • Absorption Heat
  • Carbon dioxide (CO) Capture
  • Diethylenetriamine (DETA)
  • Heat of Vaporization
  • Methyldiethanolamine (MDEA)
  • Monoethanolamine (MEA)
  • Regeneration Energy
  • Sensible Heat

ASJC Scopus subject areas

  • Energy(all)

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