Abstract The stability of amino acids in solutions containing electrolytes and the effect ambient pH on their biological activity is an important research area. In this work, volumetric transport properties ionic liquid (IL) aqueous solution with special performance 1-(2-carboxyethyl)-3-methylimidazolium chloride ([HOOCEMIM][Cl]) were studied. selected IL acts as electrolyte allows study system...

Experimental solubility curves and tie-line data for the (water + phenol + 2-ethyl-1-hexanol) system was obtained at T = 298.2 K and atmospheric pressure. The tie-line data was determined by techniques karl-fischer and refractometry. This ternary system exhibits type-2 behavior of LLE. Distribution coefficients and separation factors were measured to evaluate the extracting ability of the solve...

We found a quasi-incompressible and liquid mixture of ibuprofen, water acetone, that enables the crystallization ibuprofen particles by decreasing pressure from 15MPa to ambient (~0.1MPa). measured solubility in as function acetone/water-ratio for pressures 0.1MPa, 5.5MPa at 308K using cloud point method. Based on solubilities, binodal compositions ternary system were modelled NRTL-SAC model. T...

An improved understanding of the Non-Random Two Liquid model can improve correlation vapor liquid equilibrium (VLE) phase behavior beyond trial-and-error approach often employed. This work provides a rigorous, systematic evaluation model’s capabilities to contribute unqualified, component-independent findings and recommendations─a limitation previous studies. First, evaluations isobaric isother...

Removal of sulfur from gasoline is one of the major processes in refineries. Designing of removal process requires phase equilibrium data of the sulfur with various hydrocarbon systems. 3-Methylthiphene is an organic sulfur compound found in gasoline. In the present work VLE data of 3-Methylthiophene with various hydrocarbons were modeled using genetic algorithm. VLE data were modeled using Wil...

In this paper we propose a framework for Model-based Sequential Optimal Design of Experiments to assist experimenters involved in Vapor-Liquid equilibrium characterization studies systematically construct thermodynamically consistent models. The approach uses an initial continuous optimal design obtained via semidefinite programming, and then iterates between two stages (i) model fitting using ...