Representation of phase equilibria and densities for complex systems using a van der Waals volume translated equation of state with a UNIFAC mixing rule

Representation of phase equilibria and densities for complex systems using a van der Waals volume translated equation of state with a UNIFAC mixing rule

This work investigated the applicability of the van der Waals cubic equation of state (EoS) with volume translation (vdWt), using the modified Huron-Vidal (MHV2) mixing rule with the UNIFAC (UNIQUAC Functional Activity Coefficients) model for describing phase equi-librium and density data for a seri...

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Bibliographic Details
Main Authors: Osvaldo Chiavone-Filho, Luiz Roberto Terron, Edson Luiz Foletto
Format: Article
Language:English
Published: Universidad Nacional de Colombia 2014-09-01
Series:Ingeniería e Investigación
Subjects:
Phase equilibrium
equation of state
mixing rule
volume translation
UNIFAC
Online Access:https://revistas.unal.edu.co/index.php/ingeinv/article/view/44721
Description
Summary:This work investigated the applicability of the van der Waals cubic equation of state (EoS) with volume translation (vdWt), using the modified Huron-Vidal (MHV2) mixing rule with the UNIFAC (UNIQUAC Functional Activity Coefficients) model for describing phase equi-librium and density data for a series of complex systems over wide ranges of temperature (T) and pressure (P). Some limitations were identified in the prediction of the experimental data collected, e.g., systems with highly associating components, but in general, the EoS vdWt+MHV was able to satisfactorily represent both phase equilibrium and volumetric behavior.
ISSN:0120-5609
2248-8723

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