Liquid–Liquid Equilibrium for Cottonseed Biodiesel + Water + Alcohol (Methanol/Ethanol) Systems at (293.15 and 313.15) K: Experimental Data and Thermodynamic Modeling

2015 ◽  
Vol 60 (3) ◽  
pp. 707-713 ◽  
Author(s):  
Aline M. Maia Bessa ◽  
Regiane S. Pinheiro ◽  
Nathan S. Evangelista ◽  
Frederico R. do Carmo ◽  
Hosiberto B. de Sant’Ana ◽  
...  
Keyword(s):  
Experimental Data ◽  
Thermodynamic Modeling ◽  
Liquid Equilibrium ◽  
Water Alcohol

Solid–liquid equilibrium of binary and ternary systems formed by ethyl laurate, ethyl palmitate and n-decane: Experimental data and thermodynamic modeling

2016 ◽  
Vol 426 ◽  
pp. 83-94 ◽  
Author(s):  
Maria Dolores Robustillo ◽  
Duclerc Fernandes Parra ◽  
Antonio José de Almeida Meirelles ◽  
Pedro de Alcântara Pessôa Filho
Keyword(s):  
Experimental Data ◽  
Thermodynamic Modeling ◽  
Ternary Systems ◽  
Liquid Equilibrium ◽  
Ethyl Palmitate ◽  
Solid Liquid ◽  
Binary And Ternary Systems

Experimental data and thermodynamic modeling of solid-liquid equilibrium of binary systems containing representative compounds of biodiesel and fossil fuels: Ethyl esters and n-hexadecane

Fuel ◽  
2018 ◽  
Vol 220 ◽  
pp. 303-317 ◽  
Author(s):  
Maria Dolores Robustillo ◽  
Larissa Castello Branco Almeida Bessa ◽  
Antonio José de Almeida Meirelles ◽  
Pedro de Alcântara Pessôa Filho
Keyword(s):  
Experimental Data ◽  
Thermodynamic Modeling ◽  
Fossil Fuels ◽  
Binary Systems ◽  
Ethyl Esters ◽  
Liquid Equilibrium ◽  
Solid Liquid

scholarly journals A Gibbs free energy minimization based model for liquid–liquid equilibrium calculation of a system containing oil, brine, and surfactant

2020 ◽  
Vol 75 ◽  
pp. 17
Author(s):  
Mostafa Hosseini ◽  
Amir H. Mohammadi
Keyword(s):  
Experimental Data ◽  
Free Energy ◽  
Gibbs Free Energy ◽  
Thermodynamic Modeling ◽  
Sodium Dodecyl ◽  
Binary Interaction ◽  
Ionic Surfactant ◽  
Liquid Equilibrium ◽  
Uniquac Model ◽  
Binary Interaction Parameters

Accurate and reliable phase equilibrium calculations of microemulsion systems are of great importance. This study deals with the thermodynamic modeling of Liquid–Liquid Equilibrium (LLE) of a system including oil (n-decane), brine (containing CaCl2 salt), and ionic surfactant (sodium dodecyl sulfonate). Two models of UNIQUAC and UNIQUAC + Debye–Hückel were used for thermodynamic calculations. The LLE experimental data were utilized to estimate the binary interaction parameters of UNIQUAC model and the adjustable parameter, b, of the Debye–Hückel model. The thermodynamic model calculates the microemulsion phase’s compositions by minimizing the Gibbs free energy of the LLE system using a combination of genetic algorithm and fmincon function in order to prevent local minima. The thermodynamic modeling results show an appropriate agreement with the experimental data. Accordingly, the presented model of this study can be used as a suitable method to investigate the liquid–liquid equilibrium of systems containing oil, water, and surfactant.

Properties of Refrigerants from Cubic Equations of State

2008 ◽  
Vol 59 (5) ◽  
Author(s):  
Viorel Feroiu ◽  
Dan Geana ◽  
Catinca Secuianu
Keyword(s):  
Experimental Data ◽  
Vapor Pressure ◽  
Equations Of State ◽  
Ternary Mixtures ◽  
Volumetric Properties ◽  
Mixing Rules ◽  
Saturation Curve ◽  
Equilibrium Thermodynamic ◽  
Liquid Equilibrium ◽  
Binary And Ternary Mixtures

Vapour � liquid equilibrium, thermodynamic and volumetric properties were predicted for three pure hydrofluorocarbons: difluoromethane (R32), pentafluoroethane (R125) and 1,1,1,2 � tetrafluoroethane (R134a) as well as for binary and ternary mixtures of these refrigerants. Three cubic equations of state GEOS3C, SRK (Soave � Redlich � Kwong) and PR (Peng � Robinson) were used. A wide comparison with literature experimental data was made. For the refrigerant mixtures, classical van der Waals mixing rules without interaction parameters were used. The GEOS3C equation, with three parameters estimated by matching several points on the saturation curve (vapor pressure and corresponding liquid volumes), compares favorably to other equations in literature, being simple enough for applications.

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