Study of aqueous blends of methylamino ethanol aminoethylethanolamine and 2 ethylamino ethanol aminoehtylethanolamine for post combustion co2 capture

Abstract

Greenhouse gases are the main cause of global warming. Carbon dioxide (CO2) contributes to a major fraction of greenhouse gases. CO2 emitted into the atmosphere by the combustion of fossil fuels during industrial activities. CO2 capture from the flue gases is important due to environmental concern. The post-combustion absorption technique is most matured and useful for CO2 capture containing low partial pressure CO2. The aqueous monoethanolamine (MEA)) has been shown good CO2 absorption capability with fast reaction kinetics and considered as an industrial benchmark solution for CO2 absorption. newline But its high heat of CO2 absorption is a major drawback because of the high energy requirement for regeneration of CO2-loaded solution. In order to minimize demerits and utilize the advantages of individual single amines, amine blends are used. However, it is still a matter of research to find out a solvent that has high CO2 solubility, a faster CO2 absorption-desorption rate, and low heat of absorption as well. 2-(methylamino)ethanol (MAE) and 2-(ethylamino)ethanol (EAE) produce less stable carbamate, with fast reaction kinetics towards CO2, have better favorable properties of CO2 absorption, and reported as a better alternative to MEA in the literature. newlineAminoethylethanolamine (AEEA) is a di-amine containing one primary and one secondary amine. Its absorption capacity and absorption rate are high. AEEA was used as an activator for secondary and tertiary amines in the literature. newline newline