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The extended UNIQUAC model as proposed by Thomsen and Rasmussen [K. Thomsen, P. Rasmussen, Chem. Eng. Sci. 54 (1999) 1787-1802] was applied to the thermodynamic representation of carbon dioxide absorption in aqueous monoethanolamine (MEA) and methyldiethanolamine (MDEA) solutions. All the essential parameters of the model are simultaneously regressed to a set of data on the MEA and MDEA systems. Freezing point depression, vapor liquid equilibrium (VLE) and excess enthalpy (H-E) data of the binary systems of MEA-water and MDEA-water, VLE data on the ternary CO2-MEA-water as well as CO2-MDEA-water systems in a wide range of temperature (-20-200 degrees C) were used. The application of the model to a large number of experimental data for representation of total pressure over the absorbent solutions (25-200 degrees C), correlation of the excess enthalpy and freezing point depression of the binary solutions of alkanolamine and water and also calculation of pure alkanolamine vapor pressure has been performed with good precision. (C) 2008 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalGREENHOUSE GAS CONTROL TECHNOLOGIES 9
Publication date2009
Volume1
Issue1
Pages861-867
ISSN1876-6102
DOIs
StatePublished

Conference

Conference9th International Conference on Greenhouse Gas Control Technologies
Number9
CountryUnited States
CityWashington, DC
Period16/11/0820/11/08
Internet addresshttp://mit.edu/ghgt9/
CitationsWeb of Science® Times Cited: 5
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