Prediction of CO₂ Solubility in Aqueous DEA and MDEA Binary Solutions Using O'Connell's Expression

Abstract:

In this work, the CO₂ solubility predicted for amines of DEA and MDEA by using the OConnell (1964) expression as a base model. This expression fits between the solvent compositions and the thermodynamic properties beside the gas solubility. The solvent activity coefficient, Gibbs energy and Henrys law constants have been generated using Aspen plus data analysis tools. The self-interaction binary parameters (Margules parameters) have been calculated based on Henry constants values. The data input for this work depends on the amine system process conditions (temperature range between 298.15 K and 393.15 K), materials composition (concentrations of 10 wt%, 20 w% and 30 wt %). For both of the DEA and MDAE and the pressure fixed to be 101.3 KPa. The solubility values of this work give satisfactory results compared to the literature data.

• Periodical: Advanced Materials Research (Volume 917)
• Pages: 350-359
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.917.350
• Online since: June 2014
• Authors: Omer Eisa, Thanapalan Murugesan, Mahadzir Shuhaimi
• Keywords: Activity Coefficient, Binary Interaction Parameters, Binary Solutions, Gas Solubility

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