Solubility and phase separation of 4-morpholinepropanesulfonic acid (MOPS), and 3-morpholino-2-hydroxypropanesulfonic acid (MOPSO) in aqueous 1,4-dioxane and ethanol solutions

Application of nature‐inspired algorithms with generalized Pitzer‐Debye‐Hückel (PDH) refinement for liquid liquid equilibria (LLE) correlation in cyclic di‐ether systems

“…The mental LLE data is available. 13,[15][16][17] Due to non-availability of experimental T-x data, lower critical solution temperature (LCST) and upper critical solution temperature (UCST) data for the chosen systems, the present models cannot be used to correlate such phenomena. 49 The obtained binary interaction parameters would be perfectly…”

“…Some of the buffers studied in literature which induce liquidliquid phase splitting in 1,3-dioxolane + water and 1,4-dioxane + water mixtures are n-tris(hydroxymethyl)-methyl-4-amino-butanesulfonic acid (TABS), 4-n-morpholino-butanesulphonic acid (MOBS), 3-n-morpholinopropanesulfonic acid (MOPS), and 3-[4-(2-hydroxymethyl)-1-piperazinyl]propanesulfonic acid (HEPPS). [10][11][12][13][14][15] More recently, application of Good's Buffer Ionic Liquids (GBILs) particularly tetra-methyl ammonium 3-[4-(2hydroxymethyl)-1-piperazinyl]-propanesulfonate [TMA][EPPS] have shown promising results to separate such cyclic di-ether mixtures. 16,17 Multicomponent mixtures of 1,3-dioxolane + water + MOPS/ HEPPS/[TMA][EPPS] and 1,4-dioxane + water + HEPPS/[TMA]…”

Phase Separation of Alcohol (1-Propanol, 2-Propanol, or tert-Butanol) from Its Aqueous Solution in the Presence of Biological Buffer MOPS

“… a Standard uncertainties are u ( T ) = 0.05 K, u ( P ) = 2 kPa, and u ( w i ) = 0.005 (LLE), 0.005 (SLLE), and 0.005 (SLE). b Taken from Taha and Lee …”

“…The phase boundaries, including LLE and SLLE phase boundaries, were determined experimentally with the cloud-point method, which has been described in our previous studies. , Known compositions of alcohol and water mixtures were prepared first in a series of glass vials. A trace amount of MOPS was then added to each vial and increased until the mixture became turbid and formed two liquid phases.…”

“…Although ionic liquids are considered to be green media, currently the cost of ionic liquids is still relative higher than that of conventional entraniers or extractants. Taha and Lee − and Taha et al , reported that liquid–liquid phase splitting can also be induced by introducing biological Good’s buffers into various organic aqueous solutions. Because of the noncorrosive and biocompatible nature of the buffers, these compounds have a high potential to replace the inorganic salts as a green auxiliary agent to recover high pure organic solvents from their aqueous solutions.…”