Accelerated MEA degradation study in hybrid CO2 capture systems

Aimaro Sanna*, Fernando Vega, Benito Navarrete, M. Mercedes Maroto-Valer

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)
106 Downloads (Pure)


CO2 capture systems are typically divided into pre- post- And oxyfuel- combustion systems. However, the interest on hybrid systems, which integrate elements of more than one of the above systems, is attracting major attention in recent times due to the potential higher energy efficiency. In this work, degradation studies have been conducted to identify operational issues related to amines degradation. Oxidative MEA degradation in presence of flue gas resembling oxygen enriched combustion has been investigated. MEA loss was 27% when flue gas with 15% CO2 was used at 70°C, while only 20% loss was found in the presence of 50% CO2, indicating that hybrid CO2 capture systems may be used to decrease amine degradation of traditional postcombustion technologies. N-(2-hydroxyethyl)piperazin-3-one, N-(2-hydroxyethyl)-2-(2-hydroxyethylamino) acetamide, 2- oxadolidone, N-(2-hydroxyethyl)imidazole and N-N'-bis(2-hydroxyethyl)oxamine have been identified as MEA degradation products.

Original languageEnglish
Pages (from-to)745-749
Number of pages5
JournalEnergy Procedia
Publication statusPublished - 2014


  • Amine degradation
  • CCS
  • CO capture
  • Hybrid systems


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