Liquid-liquid equilibria and intermolecular interactions for extraction of 2-methyl phenol, 3-methyl phenol and phenol from water by a ternary hydrophobic deep eutectic solvent
Asma Sadrmousavi-Dizaj , Dongmei Xu , Lianzheng Zhang , Jun Gao , Yixin Ma , Yinglong Wang
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引用次数: 0
Abstract
Background
Hydrophobic deep eutectic solvents (HDESs) are environmentally friendly solvents that can be used to extract water pollutants, including phenolic compounds.
Methods
In this research, a ternary HDES (thymol: caprylic acid: capric acid = 1:1:1, molar ratio) has been used for the extraction of 2-methyl phenol, 3-methyl phenol and phenol from water. The effect of the HDES on liquid-liquid phase behavior of the ternary mixtures (2-methyl phenol/ 3-methyl phenol / phenol + HDES + water) at 298.15 K was discussed. The NRTL model has been used to correlate the experimental data. The selectivity and distribution coefficient were calculated as the important indexes for evaluating the extraction potential of the ternary HDES.
Significant Findings
The results showed that the ternary HDES can be used as a good extractant for the extraction of 2-methyl phenol, 3-methyl phenol and phenol. Besides, the ternary HDES could extract 2-methyl phenol and 3-methyl phenol better than phenol from their aqueous solutions. Electrostatic potentials, interaction energies and reduced density gradients were used to further investigate the interactions of 2-methyl phenol, 3-methyl phenol and phenol with the ternary HDES.
期刊介绍:
Journal of the Taiwan Institute of Chemical Engineers (formerly known as Journal of the Chinese Institute of Chemical Engineers) publishes original works, from fundamental principles to practical applications, in the broad field of chemical engineering with special focus on three aspects: Chemical and Biomolecular Science and Technology, Energy and Environmental Science and Technology, and Materials Science and Technology. Authors should choose for their manuscript an appropriate aspect section and a few related classifications when submitting to the journal online.