Effect of Methanol Concentration in the Mixed Solvent Dimethyl Sulfoxide + Methanol in the Extraction of Toluene from Heptane: Experimental Measurements and Thermodynamic Modeling

In this paper, liquid–liquid phase equilibrium data were measured for quaternary systems containing dimethyl sulfoxide + mass fraction of methanol as mixed solvent, toluene as aromatic hydrocarbon and heptane as fuel model at 298.15 K under ambient pressure. The selectivity and the distribution coef...

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Bibliographic Details
Published in:International journal of thermophysics 2021, Vol.42 (9), Article 130
Main Authors: Farghi, Fadoua, Larouech, Mohamed, Kaddami, Mohammed
Format: Article
Language:English
Subjects:
Aromatic hydrocarbons
Classical Mechanics
Condensed Matter Physics
Dimethyl sulfoxide
Gas chromatography
Geophysics
Heptanes
Industrial Chemistry/Chemical Engineering
Liquid phases
Methanol
Phase equilibria
Physical Chemistry
Physics
Physics and Astronomy
Pressure
Quaternary systems
Selectivity
Solvents
Stress concentration
Sulfoxides
Thermodynamic models
Thermodynamics
Toluene
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Summary:In this paper, liquid–liquid phase equilibrium data were measured for quaternary systems containing dimethyl sulfoxide + mass fraction of methanol as mixed solvent, toluene as aromatic hydrocarbon and heptane as fuel model at 298.15 K under ambient pressure. The selectivity and the distribution coefficient calculated from the experimental data were used to examine the possibility of adding methanol to dimethyl sulfoxide for extraction of toluene from heptane. Liquid samples were characterized by gas chromatography. The reliability of the experimental LLE data were examined by Othmer–Tobias and Hand methods. The non-random two-liquid model was used to correlate experimental data and fitting parameters were reported.
ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-021-02883-0