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Determination and measurement of solid–liquid equilibrium for binary fatty acid mixtures based on NRTL and UNIQUAC activity models

  • Seyed Mohammadreza Mirpoorian
  • MohammadHassan Vakili
  • Seyed Hossein Noie Baghban
  • Pejman Roohi
Article
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Abstract

The estimation of solid–liquid phase equilibrium is important for the design, development, and operation of many industrial processes because of application in many manufacturing fields such as cosmetic, pharmaceutic, and biotechnology industries. In this work, we measured solid–liquid phase equilibrium of six fatty acid binary mixtures using the DSC technique and developed thermodynamic approaches for binary fatty acid mixtures to estimate melting temperatures as a function of mole fraction in solid–liquid phase equilibrium. Derivation of NRTL and UNIQUAC activity models was developed to predict melting temperatures and latent heat to achieve eutectic points of undecylic acid, pentadecylic acid, margaric acid, and stearic acid six pairwise binary mixtures. The fatty acids eutectic mixtures are appropriate for heat water systems, phase clothes, concrete, and other similar applications. The results showed low deviations from experimental data measured in this study.

Keywords

Fatty acid Wilson model Melting temperature Eutectic point 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Seyed Mohammadreza Mirpoorian
    • 1
  • MohammadHassan Vakili
    • 2
  • Seyed Hossein Noie Baghban
    • 1
  • Pejman Roohi
    • 3
  1. 1.Department Chemical Engineering, Faculty of EngineeringFerdowsi University of MashhadMashhadIran
  2. 2.Department of Chemical Engineering, Shahreza BranchIslamic Azad UniversityShahrezaIran
  3. 3.National Iranian Gas CompanyIsfahanIran

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