Acetaldehyde diethyl acetal (herein called acetal) is an important pollutant of anhydrous ethanol. Isobaric vapor–liquid equilibrium (VLE) ethanol–acetal binary system was measured using a vapor condensate and liquid circulation VLE still. The experimental data were correlated with Wilson, nonrandom two-liquid (NRTL), universal quasichemical (UNIQUAC) activity coefficient models, which found su...

Isobaric vapor-liquid equilibrium (VLE) data for binary system of water + 2-azido-N,N-dimethylethanamine (DMAZ) was measured at 4 kPa. The results showed an azeotropic point x1 = 0.985 and T 302.17 K. correlated with nonrandom two-liquid (NRTL), Wilson universal quasi-chemical activity coefficient (UNIQUAC) models the liquid phase. A comparison model performances made using criterion average ab...

Accurate modeling of thermodynamic properties for CO2 absorption in aqueous alkanolamine solutions is essential for the simulation and design of such CO2 capture processes. In this study, we use the Electrolyte Nonrandom Two-Liquid activity coefficient model to develop a rigorous and thermodynamically consistent representation for the MDEA-H2O-CO2 system. The vapor-liquid equilibrium (VLE), hea...

The aim of this paper is to bring valuable phase equilibria information for the design and operation biolubricant related biofuel product processes. As a result, Vapor-Liquid Equilibrium (VLE) measurements, at different temperatures, pressures global compositions, ternary systems [Ethanol + 2-Ethyl-1-hexanol 1-Dodecanol] 1-Octanol 1-Dodecanol], as well multicomponent system containing these alc...

Following the work of Austgen et al., the electrolyte nonrandom-two-liquid (NRTL) model was applied in a thermodynamically consistent manner to represent the vapor-liquid equilibrium (VLE) of the aqueous monoethanolamine (MEA)-CO2 system with rigorous chemical equilibrium consideration. Special attention was given to the accurate VLE description of the system at both absorbing and stripping con...

Terpenes are important varietal compounds responsible for the characteristic aromas of alcoholic beverages. Reliable vapor–liquid equilibrium (VLE) data this class aroma in hydroalcoholic media is essential to understand their behavior during distillation and thus achieve a desired quality distilled products. In work, experimental measurements VLE ?-terpineol highly diluted ethanol–water mixtur...

This short note describes an apparatus that has been designed and constructed to allow assessment of the extent of chemical decomposition of fluids and fluid mixtures under high temperature, high pressure conditions. The apparatus is used to screen fluid systems prior to PVT (pressure-volume-temperature) or VLE (vapor-liquid equilibrium) experiments under severe conditions. For a predetermined ...

This work reports high-pressure cloud point data for the quaternary system glycerol + olive oil + n-butane + AOT surfactant. The static synthetic method, using a variable-volume view cell, was employed for obtaining the experimental data at pressures up to 27 MPa. The effects of glycerol/olive oil concentration and surfactant addition on the pressure transition values were evaluated in the temp...

vapor-liquid equilibrium in nh3-co2-h2o system at high pressures has been studied. the uniquac-nrf model for this system was extended by using the goppert 4 maurer reported datas. since the system contains molecules and ionic species the binary interaction parameters considered, where those are of molecule-molecule, molecule-ion and ion-ion types. these interaction parameters are taken as const...