Liquid−Liquid Equilibrium for Systems of Canola Oil, Oleic Acid, and Short-Chain Alcohols

Batista, Eduardo Augusto Caldas; Monnerat, Sandra Mourão; Kato, Kênia; Stragevitch, Luiz; Meirelles, Antônio J. A.

doi:10.1021/je990015g

Cited by 117 publications

(155 citation statements)

References 7 publications

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“…This partitioning had already been observed in earlier studies (Batista et al, 1999;Shiozawa et al, 2015). The liquid-liquid extraction by ethanol has been especially studied as an alternative method of vegetable oil deacidification (Mariano et al, 2011, Rodrigues et al, 2006, Cuevas et al, 2009.…”

Section: Lipid Compositionsupporting

confidence: 59%

Improved rapeseed oil extraction yield and qualityviacold separation of ethanol miscella

Citeau

Slabi

Joffre

et al. 2018

OCL

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-In the extraction of vegetable oils, the idea of using ethanol as a solvent, allowing solvent recycling without distillation, can be attested as early as 1948 (Beckel), yet it is now seldom envisaged. The development of organic farming and a growing demand for a more natural diet prompted us to revisit this approach, which takes advantage of the relatively low affinity of ethanol for lipids to produce pure crude oils and meal with higher protein content. This method is based on the change of oil solubility in ethanol with temperature. Rapeseed oil extraction was carried out by hot pressurized ethanol (subcritical extraction condition). Oil was then recovered by cooling the miscella and demixing of two phases, an oil-rich phase and a solvent-rich phase. This study, after verifying the kinetics of extraction, focused on the optimization of the demixing temperature based on the amount and quality of recovered oil. The results show that ethanol extraction followed by cold demixing of the miscella makes it possible to obtain a high quality oil, free of free fatty acids and phospholipids.

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Section: Lipid Compositionsupporting

confidence: 59%

Improved rapeseed oil extraction yield and qualityviacold separation of ethanol miscella

Citeau

Slabi

Joffre

et al. 2018

OCL

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show abstract

“…Instead, mass fraction, as originally proposed by Oishi and Prausnitz (1978) can be used for the calculation of the activity coefficient of a solvent in polymeric solutions with the UNIQUAC and the UNIFAC methods. Stragevitch (1997), Velezmoro-Sánchez (1999), Batista et al (1999), Lintomen et al (2000) and Sé andAznar (2002a, 2002b) …”

Section: Thermodynamic Modelmentioning

confidence: 99%

Liquid-liquid equilibrium of water + PEG 8000 + magnesium sulfate or sodium sulfate aqueous two-phase systems at 35°C: experimental determination and thermodynamic modeling

Castro

Aznar

2005

Braz. J. Chem. Eng.

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-Liquid-liquid extraction using aqueous two-phase systems is a highly efficient technique for separation and purification of biomolecules due to the mild properties of both liquid phases. Reliable data on the phase behavior of these systems are essential for the design and operation of new separation processes; several authors reported phase diagrams for polymer-polymer systems, but data on polymer-salt systems are still relatively scarce. In this work, experimental liquid-liquid equilibrium data on water + polyethylene glycol 8000 + magnesium sulfate and water + polyethylene glycol 8000 + sodium sulfate aqueous two-phase systems were obtained at 35°C. Both equilibrium phases were analyzed by lyophilization and ashing. Experimental results were correlated with a mass-fraction-based NRTL activity coefficient model. New interaction parameters were estimated with the Simplex method. The mean deviations between the experimental and calculated compositions in both equilibrium phases is about 2%.

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“…Instead, mass fraction can be used, as originally proposed by Oishi and Prausnitz (1978), for calculation of the activity coefficient of a solvent in polymeric solutions with the UNIQUAC and the UNIFAC methods. Stragevitch (1997), Velezmoro-Sánchez (1999), Batista et al (1999), Lintomen (1999) and Lintomen et al (2000) used this approach with the NRTL model. When mass fractions are used, the model is…”

Section: Thermodynamic Modelmentioning

confidence: 99%

Thermodynamic modelling of phase equilibrium for water + poly(Ethylene glycol) + salt aqueous two-phase systems

Sé

Aznar

2002

Braz. J. Chem. Eng.

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-The NRTL (nonrandom, two-liquid) model, expressed in mass fraction instead of mole fraction, was used to correlate liquid-liquid equilibria for aqueous two-phase polymer-salt solutions. New interaction energy parameters for this model were determined using reported data on the water + poly(ethylene glycol) + salt systems, with different molecular masses for PEG and the salts potassium phosphate, sodium sulfate, sodium carbonate and magnesium sulfate. The correlation of liquid-liquid equilibrium is quite satisfactory.

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Liquid−Liquid Equilibrium for Systems of Canola Oil, Oleic Acid, and Short-Chain Alcohols

Cited by 117 publications

References 7 publications

Improved rapeseed oil extraction yield and qualityviacold separation of ethanol miscella

Improved rapeseed oil extraction yield and qualityviacold separation of ethanol miscella

Liquid-liquid equilibrium of water + PEG 8000 + magnesium sulfate or sodium sulfate aqueous two-phase systems at 35°C: experimental determination and thermodynamic modeling

Thermodynamic modelling of phase equilibrium for water + poly(Ethylene glycol) + salt aqueous two-phase systems

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