Hydrophobic deep eutectic solvents as extraction agents of nitrophenolic pollutants from aqueous systems

Dynamics of type V menthol-thymol deep eutectic solvents: Do they reveal non-ideality?

“…[13][14][15] As such, they are contemplated for extraction applications that require the use of hydrophobic solvents. [16][17][18][19] Since 2019 and the seminal work of Abranches et al [12], the non-ideal character of type V eutectic mixtures has been mostly investigated for terpene-based solvents. [20][21][22][23][24][25] For the prototypical menthol-thymol mixture, a large negative deviation from ideality was demonstrated from the experimental determination of the solid-liquid equilibrium phase diagram, allowing its classification as deep.…”

Experimental density and volumetric properties of DESs based on tetrabutylammonium bromide and used for effective extraction of naphthol green B and malachite green

“…The factors which affect the extraction efficiency are temperature, initial concentration of solute, shaking time and choice of suitable solvent for bonding with solute and immiscible with water. After performing the liquid–liquid extraction process, the extraction efficiency was computed using the following equation, knowing the initial concentration of aq.NGB/aq.MG in the feed and final concentration of aq.NGB/aq.MG in the raffinate phase: 36,37 where and are the initial and final concentration of aq.NGB/aq.MG in the aqueous feed and raffinate phase, respectively. The removal efficiencies of 25, 50, 75 and 100 ppm of NGB/MG from its aqueous solution using hydrophobic DES, {[TBAB][DA]} and {[TBAB][OA]} at T = 298.15, 308.15, 318.15 and 328.15 K are illustrated in Supporting Information Tables S9 and S10.…”

“…The factors which affect the extraction efficiency are temperature, initial concentration of solute, shaking time and choice of suitable solvent for bonding with solute and immiscible with water. After performing the liquid-liquid extraction process, the extraction efficiency was computed using the following equation, knowing the initial concentration of aq.NGB/aq.MG in the feed and final concentration of aq.NGB/aq.MG in the raffinate phase: 36,37 η=…”