Phase equilibrium studying for the supercritical fluid extraction process using carbon dioxide solvent with 1.35 mole ratio of octane to ethanol mixture

Kassim, K. M.; Davarnejad, Reza; Zainal, A.

doi:10.1016/j.cej.2007.09.040

Cited by 7 publications

(10 citation statements)

References 5 publications

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“…As can be seen from these figures, there are two regions of partial miscibility. A similar behaviour was found by Kassim et al [26] for the binary system (CO 2 + n-hexadecane). According to these authors, the first region terminates at an upper critical solution pressure and the second at lower critical solution pressure and persists at much higher pressures.…”

Section: Resultssupporting

confidence: 78%

High-pressure phase equilibrium data for systems with carbon dioxide, α-humulene and trans-caryophyllene

Michielin

Rosso

Franceschi

et al. 2009

The Journal of Chemical Thermodynamics

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Section: Resultssupporting

confidence: 78%

High-pressure phase equilibrium data for systems with carbon dioxide, α-humulene and trans-caryophyllene

Michielin

Rosso

Franceschi

et al. 2009

The Journal of Chemical Thermodynamics

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“…However, percentage of octane and ethanol extraction by high pressure CO 2 solvent increases with a decrease of pressure in the binary systems of CO 2 -octane and CO 2 -ethanol, respectively, but extraction percentage of ethanol is more than octane at the same conditions (Kassim, Davarnejad, and Zainal 2008). Furthermore, the…”

Section: Introductionmentioning

confidence: 90%

“…Many researchers have proven that carbon dioxide is chemically reactive toward alcohols and general oxygen-containing compounds and it also produces weak complexation in condensed mixtures of these substances (Hildebrand and Scott 1964;Gupta, Lesslie, and King 1973;Kassim and Davarnejad 2006a,b;Kassim, Davarnejad, and Zainal 2008;Davarnejad et al 2008a).…”

Section: Introductionmentioning

confidence: 99%

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Phase Equilibrium Study in Supercritical Fluid Extraction of Ethanol to Octane Mixture Using CO2

Davarnejad

Kassim

Zainal

et al. 2007

AJChE

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Solubility data was measured for carbon dioxide with ethanol and octane using a phase equilibrium loading re-circulating high-pressure type apparatus at a pressure up to 100.75 bar and a temperature of 348.15K for ethanol and octane mixture involved with 25% ethanol and 75% octane. Experimental data was compared with the calculated regular solution theory data. A procedure is employed to each phase by applying activity coefficient expressions based on regular solution theory. Calculations along these lines are described and the physical bases for applying this method under the relevant conditions are discussed. The regular solution theory approach has been found to be encouraging for the prediction of phase equilibria solubilities though the interaction parameters must be regarded as pressure dependent.

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“…The RST, which is adapted as a model for any system, is based on the activity coefficients by applying the following equations. The procedure for obtaining these final equations is described in detail in the literature. – However, the derived equations are slightly similar to some well-known equations such as UNIFAC, but UNIFAC equations were also obtained from the RST. (Both of them are based on the random mixing assumption.)…”

Section: Thermodynamic Modelmentioning

confidence: 99%

Solubility of β-Carotene from Crude Palm Oil in High-Temperature and High-Pressure Carbon Dioxide

et al. 2009

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The solubility of β-carotene from crude palm oil using a phase equilibrium loading recirculating highpressure-type apparatus at temperatures of (353.2, 373.2, and 393.2) K was studied. The experimental data showed that the mole fraction solubility of β-carotene was 2.27 • 10 -2 at a temperature of 393.2 K and at pressure of 5.4 MPa. The experimental data were compared with a set of theoretical data that was calculated using the regular solution theory model (RSTM). The theoretical data showed that the RSTM was able to correlate the solubility of β-carotene from crude palm oil in carbon dioxide. The mole fraction solubility of β-carotene based on the RSTM was 5.30 • 10 -3 at temperature of 393.2 K and at pressure of 3.3 MPa.

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Phase equilibrium studying for the supercritical fluid extraction process using carbon dioxide solvent with 1.35 mole ratio of octane to ethanol mixture

Cited by 7 publications

References 5 publications

High-pressure phase equilibrium data for systems with carbon dioxide, α-humulene and trans-caryophyllene

High-pressure phase equilibrium data for systems with carbon dioxide, α-humulene and trans-caryophyllene

Phase Equilibrium Study in Supercritical Fluid Extraction of Ethanol to Octane Mixture Using CO2

Solubility of β-Carotene from Crude Palm Oil in High-Temperature and High-Pressure Carbon Dioxide

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