Phase equilibria for carbon dioxide-ethanol-water system at elevated pressures

Lim, Jong Sung; Lee, Youn Yong; Chun, Honggu

doi:10.1016/0896-8446(94)90009-4

Cited by 112 publications

(59 citation statements)

References 13 publications

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“…The maximum addition of ethanol in this study was below the suggested level. However, the lower extra point of pressure operated at 69.3, 45 • C and 10 vol% ethanol did not form a homogeneous CO 2 -ethanol system [14]. Furthermore, the upper extra point of pressure operated at 220.7 bar was over the pressure limitation of the HPLC pump.…”

Section: Experimental Designmentioning

confidence: 98%

Extraction of vetiver essential oil by ethanol-modified supercritical carbon dioxide

Danh

Truong²,

Mammucari

et al. 2010

Chemical Engineering Journal

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Section: Experimental Designmentioning

confidence: 98%

Extraction of vetiver essential oil by ethanol-modified supercritical carbon dioxide

Danh

Truong²,

Mammucari

et al. 2010

Chemical Engineering Journal

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“…Mixtures of ethanol with other fluids form highly nonideal systems, for example, excess molar properties and critical lines for ethanol solute mixtures exhibit unusually large deviations from ideal mixture behavior. Ethanol is also used as a polar co-solvent in supercritical fluid technologies to enhance the solubility of a solute and to improve the selectivity of the supercritical solvent (effective polar modifiers) [1][2][3][4][5][6][7][8]. Ethanol can be used as a renewable bio-fuel.…”

Section: Introductionmentioning

confidence: 99%

PVT Measurements for Pure Ethanol in the Near-Critical and Supercritical Regions

et al. 2007

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The P V T properties of pure ethanol were measured in the near-critical and supercritical regions. Measurements were made using a constant-volume piezometer immersed in a precision thermostat. The uncertainty of the density measurements was estimated to be 0.15%. The uncertainties of the temperature and pressure measurements were, respectively, 15 mK and 0.05%. Measurements were made along various near-critical isotherms between 373 and 673 K and at densities from 91.81 to 497.67 kg · m −3 . The pressure range was from 0.226 to 40.292 MPa. Using two-phase P V T results, the values of the saturated-liquid and -vapor densities and the vapor pressure for temperatures between 373.15 and 513.15 K were obtained by means of an analytical extrapolation technique. The measured P V T data and saturated properties for pure ethanol were compared with values calculated from a fundamental equation of state and correlations, and with experimental data reported by other authors. The values of the critical parameters (T C ,P C ,ρ C ) were derived from the measured values of saturated densities and vapor pressure near the critical point. The derived values of the saturated densities near the critical point for ethanol were interpreted in term of the "complete scaling" theory.

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“…Additionally,figure 4shows the triangular phase diagram for the same ternary system. Data reported in the literature[22,[50][51][52][53] are also included in figures 3 and 4 for comparison. The discrepancies, observed between this work and the values reported in the literature, of the mole fraction of the liquid and vapour phases were <4% and <2%, respectively.…”

mentioning

confidence: 99%

High-pressure (vapour+liquid) equilibria for ternary systems composed by {(E)-2-hexenal or hexanal+carbon dioxide+water}: Partition coefficient measurement

Bejarano

López

Valle

et al. 2015

The Journal of Chemical Thermodynamics

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Phase equilibria for carbon dioxide-ethanol-water system at elevated pressures

Cited by 112 publications

References 13 publications

Extraction of vetiver essential oil by ethanol-modified supercritical carbon dioxide

Extraction of vetiver essential oil by ethanol-modified supercritical carbon dioxide

PVT Measurements for Pure Ethanol in the Near-Critical and Supercritical Regions

High-pressure (vapour+liquid) equilibria for ternary systems composed by {(E)-2-hexenal or hexanal+carbon dioxide+water}: Partition coefficient measurement

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