Effectiveness of amino acid salt solutions in capturing CO2: A review.

Abstract Carbon capture and storage (CCS) is now known to be an effective way to reduce greenhouse gas emissions especially CO 2 to the atmosphere. Amino acid salt (AAS) solutions are regarded as promising CO 2 absorbents compared to traditional amine solutions, as they are environmentally being with lower evaporation as well as fewer degradation issues. This paper is intended to review recent developments in CO 2 capture using AASs. The thermodynamics and kinetics of CO 2 and different AASs are illustrated in detail. We will also discuss the blended solutions containing AASs in terms of applications and absorption or regeneration performance. Additionally, we will present specific directions for future research on CO 2 -AAS systems. This paper could provide a guideline for effective carbon capture by new absorbents. Highlights • A comprehensive review of amino acid salts fundamentals is introduced. • Detailed thermodynamics and kinetics between CO 2 and various amino acid salts are discussed. • The developments of CO 2 capture by amino acid salts in the fields of biogas upgrading, natural gas and flue gas purification are illustrated. [ABSTRACT FROM AUTHOR]