Document Type
Article
Publication Date
1-15-2015
Abstract
It is an urgent act to limit greenhouse gas emissions to avoid the harmful effects of climate changes. In this work, the binary and ternary systems of guanidinium trifluoromethanesulfonate (guaOTf) in N-methyldiethanolamine (MDEA) and/or water were examined as alternative solvents for gas treatment process. The thermodynamic properties including density, rho, viscosity, eta, thermal expansion, alpha(p) and physical solubility of CO2 in the systems were measured as a function of molar composition with a temperature range of 293.2-333.2K at 100-1000 kPa. The presence of guaOTf accelerates CO2 absorption process. The present study offers equations of correlation providing a reliable prediction of the binary and ternary systems as a function of concentration. The linear equation, quadratic equation, extended Arhenius equation and Henry's Law equation have been applied to assess the validity of the finding. The CO2 solubilities in guaOTf systems are found higher compared to other ILs in previous researches. Additionally, ANN modeling of the effective parameters was carried out and the composition of guaOTf was proven as the key factor in maximizing the CO2 solubility. (C) 2014 Elsevier B.V. All rights reserved.
Keywords
Amine-functionalized ionic liquid, guanidinium, alkanolamine, co2 solubility, physical property, temperature ionic liquids, n-methyldiethanolamine solutions, aqueous-solutions, carbon-dioxide, elevated pressures, viscosity, density, capture, diethanolamine, mixtures
Divisions
fac_eng
Funders
University Malaya Research Grant UMRG RPOO6F-13SUS RPOO7D-13AET
Publication Title
Fluid Phase Equilibria
Volume
385
Publisher
Elsevier
Additional Information
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