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Experimental Measurements and Correlation of Liquid Extraction of o-Xylene from Octane Using Mixed Solvents Including Dimethyl Sulfoxide and Methanol at 298.15 K

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Abstract

The purpose of the present work is to study the effect of adding different mass quantities of a light alcohol (methanol) to dimethyl sulfoxide, in order to extract o-xylene from octane. Experimental liquid–liquid equilibrium data for the quaternary systems {octane + o-xylene + dimethyl sulfoxide + (0.2, 0.4, 0.6, and 0.8) mass fraction of methanol} were determined at T = 298.15 K under atmospheric pressure. For the four quaternary systems, the selectivity and distribution coefficient of o-xylene were applied to assess the efficacy of (dimethyl sulfoxide + mass fraction of methanol) as mixed solvents. The triangular phase diagrams for all studied systems were sketched. The Non Random Two-Liquid activity coefficient model was employed to correlate experimental results and fitting parameters were reported.

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Acknowledgements

The authors are grateful to the Analyses and Characterization Centre of Kadi AYYAD University, Marrakech-Morocco for their materiel facilities.

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  1. Laboratory: Physical-Chemistry of Processes and Materials, Faculty of Sciences and Technologies, Hassan 1st University, Settat, Morocco

    Fadoua Farghi & Mohammed Kaddami

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  1. Fadoua Farghi
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  2. Mohammed Kaddami
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Correspondence to Fadoua Farghi.

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Farghi, F., Kaddami, M. Experimental Measurements and Correlation of Liquid Extraction of o-Xylene from Octane Using Mixed Solvents Including Dimethyl Sulfoxide and Methanol at 298.15 K. Int J Thermophys 41, 17 (2020). https://doi.org/10.1007/s10765-019-2596-z

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