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The CPA EoS application to model CO2 and H2S simultaneous solubility in ionic liquid [C2mim][PF6]
Authors:Alireza Kheiri
Affiliation:Department of technical unit, Kalleh dairy co, Amol, Iran
Abstract:The CPA EoS was utilized for solubility modeling of pure CO2 and H2S and their mixture in [C2MIM][PF6]. The model is comprised of SRK EoS in addition to Wertheim's association term. Up to now, several associating models such as SAFT variants have been successfully applied to such systems. Considering the complexity and time consuming nature of SAFT EoSs, CPA can be a good alternative due to its accuracy and simplicity with respect to the SAFT.

The AAD % for binary systems including H2S+ IL and CO2+ IL are 11.78, 10.40 respectively. Moreover, the ternary system show AAD% equal to 16.51.

Keywords:acid gas solubility  CPA  [C2MIM][PF6]  equation of State  ionic liquid  thermodynamic modeling
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