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Updated: Jun 19, 2026

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Removal characteristics of CO2 using aqueous MEA/AMP solutions in the absorption and regeneration process
Won-Joon Choi1, Jong-Beom Seo, Sang-Yong Jang
1Greenhouse Gas Research Center Korea Institute of Energy Research, Daejeon 305343, Korea. cwj96@pusan.ac.kr
Abstract:
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.
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