Phase behaviour at different temperatures of an aqueous two-phase ionic liquid containing ([Bmim]BF4+manganese sulfate+water)

Phase diagrams of aqueous two-phase systems formed by polyethylene glycol+ammonium sulfate+water: equilibrium data and thermodynamic modeling

“…in which α α α α i , β β β β i and γ γ γ γ i , with i = 0 and 1, are fitting parameters and independent of temperature [12]. In equations (5)-(7), T 0 is assumed to be the reference temperature, here Othmer-Tobias, as can be seen also in Table 8.…”

“…ATPS is traditionally formed by a mixture of aqueous solutions of two mutually incompatible polymers [10], by a polymer and a salt [11] ,or even by two salts [12]. The phase split results in a polymer-enriched top phase and a salt-enriched bottom phase (or one enriched with the other polymer), or the converse.…”

Partition study of textile dye Remazol Yellow Gold RNL in aqueous two-phase systems

“…Most of the phase diagrams pertinent to this study have been previously reported in the literature [21][22][23][24][25][26][27]. Phase diagrams for the PEG 4000 + magnesium sulfate + water system at 298.15 K were obtained and utilized in YR partitioning studies.…”

“…To achieve the desired compositional ratio for each ATPS [21][22][23][24][25][26], appropriate amounts of [Bmim]BF 4 or PEG, salt stock solutions and water were taken into a graduated centrifuge tubes. The tubes were shaken and left to stand in a thermostatic bath at 298.15 K, for a minimum of 48 h (Marconi, MA 184, with an uncertainty of AE0.1 K).…”

“…This surprising partitioning behavior can be rationalized by considering that this system exhibits phase inversion. Therefore, the IL-enriched phase which is the less dense top phase, becomes the bottom phase for TLL 3-5 [21].…”