High-salinity brine desalination with amine-based temperature swing solvent extraction: A molecular dynamics study

نویسندگان

چکیده

Solvent extraction desalination (SED) is a promising technique for efficiently treating high salinity brines. However, only few studies in the literature have investigated influence of molecular characteristics organic solvents on emergent performance separation process. Thus, this work we investigate structure four different secondary amines process concentrated aqueous solution NaCl. Molecular dynamics simulations and free energy calculations are used to obtain thermodynamic structural properties pure solvent bulk phase, as well homogeneous solvent-water mixture. Furthermore, solvent-brine interfacial systems explicitly analyze water partitioning behavior relevant temperature range SED. The solubilization these found be an exothermic Additionally, although hydrogen-bonding interaction between molecules beneficial, not necessarily dominant factor ranking solubility solvents. excess volume mixing mixture, electrostatic surface features also provide important clues screening behavior.

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ژورنال

عنوان ژورنال: Journal of Molecular Liquids

سال: 2021

ISSN: ['0167-7322', '1873-3166']

DOI: https://doi.org/10.1016/j.molliq.2021.117359