Novel Binary Mixtures of Alkanolamine Based Deep Eutectic Solvents with Water—Thermodynamic Calculation and Correlation of Crucial Physicochemical Properties

Abstract

This paper demonstrates the assessment of physicochemical and thermodynamic properties of aqueous solutions of novel deep eutectic solvent (DES) built of tetrabutylammonium chloride and 3-amino-1-propanol or tetrabutylammonium bromide and 3-amino-1-propanol or 2-(methylamino)ethanol or 2-(butylamino)ethanol. Densities, speeds of sound, refractive indices, and viscosities for both pure and aqueous mixtures of DES were investigated over the entire range of compositions at atmospheric pressure and T = (293.15 ‒ 313.15) K. It was concluded that the experimental data were successfully fitted using the Jouyban–Acree model with respect to the concentration. Obtained results showed that this mathematical equation is an accurate correlation for the prediction of aqueous DES properties. Key physicochemical properties of the mixtures—such as excess molar volumes, excess isentropic compressibilities, deviations in viscosity, and deviations in refractive indices—were calculated and correlated by the Redlich–Kister equation with temperature-dependent parameters. The non-ideal behavior of the studied systems were also evaluated by using the Prigogine−Flory−Patterson theory and the results were interpreted in terms of interactions between the mixture components.

Extraction and separation studies of Nd/Fe and Sm/Co by deep eutectic solvent containing Aliquat 336 and glycerol

“…The lower the dielectric constant, the more hydrophobic the character 39 and the higher the extraction. The refractive index of the diluted DES continued decreasing with increases in the DES molarity since the interaction of photons became less strong with the constituents of the solution 40 . Because of this, light moves with a higher velocity in the more diluted Ali‐Gly DES.…”

“…The refractive index of the diluted DES continued decreasing with increases in the DES molarity since the interaction of photons became less strong with the constituents of the solution. 40 Because of this, light moves with a higher velocity in the more diluted Ali-Gly DES. With increasing temperature due to the higher thermal energy of molecules (as stated earlier), the speed of light in the hydrophobic DES extractant slows and the refractive index increases.…”

Recent advances in aqueous virus removal technologies

“…Careful selection of nanoparticles leads to uniformity in the pore size making the membrane controllable for the removal of any contaminants whatever their size. The occurrence of particulate fouling is a function of the membrane surface properties (i.e., morphology and topography), feedwater characteristics (i.e., the type of fouling agents present, their concentrations, and their physicochemical properties such as size and surface charge), the chemistry of feed (i.e., solution pH, ionic strength and charge interactions), as well as the operating conditions (i.e., temperature, pressure, flux and cross-flow velocity (CFV)) ( Seidi et al, 2020b ; Vatanpour et al, 2021b ; Nowosielski et al, 2022 ). Generally, smoother membranes with enhanced hydrophilic characteristics and lower charge surfaces are less likely to experience particulate fouling.…”

Critical Properties of Ternary Deep Eutectic Solvents Using Group Contribution with Extended Lee–Kesler Mixing Rules

“…Such properties can be tailored by modifying the HBA and HBD structure and their corresponding molar ratios. , Like any solvent, the physicochemical properties of DESs play a pivotal role in the feasibility and applicability of a specific chemical or physical process. − For example, the density of a solvent is of great importance in the separation between the aqueous and organic phases for hydrophobic DESs, , and the efficiency of solid–liquid extraction processes ( e.g ., sugar extraction). Likewise, the viscosity of a solvent affects the mass transfer from and to the solvent. , For a balanced process operation and design, careful choice of the DES and its constituent should be considered . Such efforts considered combining more than two components of DESs or even diluting them with water (ternary DESs), adding another degree of freedom to the overall solvent design .…”

“…Likewise, the viscosity of a solvent affects the mass transfer from and to the solvent. 18 , 19 For a balanced process operation and design, careful choice of the DES and its constituent should be considered. 15 Such efforts considered combining more than two components of DESs or even diluting them with water (ternary DESs), adding another degree of freedom to the overall solvent design.…”