Application of a simple cubic regularity for liquid density predictions and comparison with GMA EOS

Document Type : Original Article

Authors

1 Department of chemical engineering, Faculty of engineering, Ferdowsi University of Mashhad, Mashhad, Iran

2 Chemical Engineering Department, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran

Abstract

Based on a cubic regularity, (2Z-1)v is nearly linear versus molar density at isothermal condition for each liquids, where Z and v is compressibility factor and molar volume, respectively. Using the regularity, a cubic equation of state can be obtained. The temperature-dependent parameters of the cubic EOS are obtained through correlation of pu..re liquid density of several substances at various pressures and temperatures. The results of the cubic EOS are in good agreement with the experimental data. In addition, the results of the cubic EOS are compared with the Goharshadi-Morsali-Abbaspour (GMA) EOS.

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