International Journal of Advances in Science, Engineering and Technology(IJASEAT)
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  Journal Paper

Paper Title
Solubility of Co2 in Choline Chloride-Amine Based Deep Eutectic Solvents

In this study, we report new measurements of the solubility of carbon dioxide in three types of deep eutectic solvents (DESs), (Choline chloride + Monoethanolamine, ChCl-MEA), (Choline chloride + Diethanolamine, ChCl-DEA) and (Choline chloride + Methyldiethanolamine, ChCl-MDEA), which was determined at three different ChCl:amine molar ratios of 1:6, 1:8 and 1:10. The selected amines represent the primary, secondary and tertiary amines, respectively. The CO2 absorption was conducted with a solvent screening set-up (SSS) and the CO2 loading was measured with an ‘Elementar’ total organic carbon (TOC) analyzer. The solubility experiments were performed based on the conditions of the absorber in the post-combustion capture process (PCO2 = 15kPa and T = 40oC). Results revealed that amine-based DESs have absorption capacity that is much higher than both 30wt% aqueous amine solutions and conventional DESs. The solubility of CO2 was found to increase as the molar ratio of the amine in the DES increased. ChCl-MEA absorbed the highest quantity of CO2 while ChCl-MDEA absorbed the least. Keywords - Deep eutectic solvent, Amines, Solubility of CO2, Choline chloride

Author - Idowu Adeyemi, Mohammad R. M. Abu-Zahra, Inasalnashef

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| Published on 2017-06-28
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