Mass transfer studies on ternary systems in a bench-scale liquid-liquid extraction (LLX) column and a comparison with simulations

Sanpui, Debjit; Singh, Manish K.; Khanna, Ashok

doi:10.1007/bf02705442

Cited by 6 publications

(4 citation statements)

References 7 publications

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“…The ternary system of water (1) + acetic acid (2) + 4-methylpentan-2-one (3) {(water + acetic acid + methyl isobutyl ketone (MIBK)} is one of the three recommended chemical systems by the European Federation of Chemical Engineers for liquid–liquid extraction work . It is known as a medium interfacial tension (about 10 mN·m –1 ), frequently used for liquid–liquid extraction studies. − The mass transfer resistance in this system exists in both phases . The raw data for LLE of these systems at (298.2 and 308.2) K have been reported. , Recently, some experimental data with predicting LLE using the homotopy method for this system at 294.2 K has been reported by Laiadi et al Nevertheless, there is a lack of consistent study about the influence of temperature for this ternary system and modeling them.…”

Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibria for the System Water + 4-Methylpentan-2-one + Acetic Acid at Several Temperatures

2012

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The effect of temperature on the liquid–liquid equilibrium (LLE) of the ternary system of {water (1) + acetic acid (2) + 4-methylpentan-2-one (3)}, a recommended system for liquid–liquid extraction studies, was investigated at (288.2, 313.2, and 333.2) K. The reliability of the experimental tie line data was examined with the Othmer–Tobias and the Hand correlations that represented an excellent agreement. The distribution coefficient of acetic acid between organic and aqueous phases increases significantly with temperature, more than 18 % with low solute concentrations, and its value exceeds 1. Meanwhile, a high separation factor within 3.27 to 43.50 was revealed to extract acetic acid from aqueous phase at different temperatures. Higher separations are relevant for low concentrations of acetic acid at 313.2 K. In addition, the binary molecular interaction parameters for the nonrandom two-liquid (NRTL) and the universal quasichemical (UNIQUAC) models were estimated from the experimental results. Results show that these models with their obtained parameters predict tie lines with root-mean square deviation values of 0.0052 and 0.0245, respectively.

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Section: Introductionmentioning

confidence: 99%

Liquid–Liquid Equilibria for the System Water + 4-Methylpentan-2-one + Acetic Acid at Several Temperatures

2012

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“…The retarding effect of adsorbing ions can result in changing the circulating behavior until leading to the rigid behavior, according to the criterion given by Steiner [26,28] and within the important pH range of 5.5-8. This problem is more serious in the mass transfer direction of continuous to dispersed phase.…”

Section: Discussionmentioning

confidence: 99%

“…Drops were spaced more than 60 mm apart, typically with a range of flow-rate between 20.54-120.23 mL/h. Acetone concentration in the collected samples was measured with a GC (Shimadzu, 14B) with FID detector, calibrated with reference substances of toluene and acetone (Merck) for gas chromatography [12,21,28]. The concentration of acetone in the known samples was within the range of 1.5-44.7 g/L with 14 samples in calibration.…”

Section: Methodsmentioning

confidence: 99%

Modelling mass transfer coefficient for liquid-liquid extraction with the interface adsorption of hydroxyl ions

Saien

Daliri

2009

Korean J. Chem. Eng.

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A combined model was used for prediction of overall mass transfer coefficient of drops in the liquid-liquid extraction process, prone to the deleterious effect of adsorbed hydroxyl ions onto the interface. The importance is due to the use of different pH waters as aqueous phase. The work is based on single drop experiments with a chemical system of toluene-acetone-water where the pH of the continuous aqueous phase was within the range 5.5-8, appropriate to most industrial waters, and can lead to rigid behavior of circulating drops. The combined model in conjunction with the correlation developed here for the ratio of interfacial velocity to drop terminal velocity that links the film mass transfer coefficients of both sides can be used satisfactorily for design purposes. This model gives a maximum relative deviation of less than ±10% for the mass transfer directions of dispersed to continuous phase and vice versa.

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“…These are usually based on either rigid, circulating or oscillating drops, falling or rising in the continuous phase with mass transfer occurring into or out of drops. A list of the published correlations for the mass transfer coefficients of drops has been presented by Sanpui et al [34].…”

Section: Modeling the Mass Transfer Coefficient Datamentioning

confidence: 99%

Effect of uni-univalent salts on the mass transfer of isobutyric acid between cumene and water

Saien

Norouzi

Daliri

2013

Journal of Industrial and Engineering Chemistry

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Mass transfer studies on ternary systems in a bench-scale liquid-liquid extraction (LLX) column and a comparison with simulations

Cited by 6 publications

References 7 publications

Liquid–Liquid Equilibria for the System Water + 4-Methylpentan-2-one + Acetic Acid at Several Temperatures

Liquid–Liquid Equilibria for the System Water + 4-Methylpentan-2-one + Acetic Acid at Several Temperatures

Modelling mass transfer coefficient for liquid-liquid extraction with the interface adsorption of hydroxyl ions

Effect of uni-univalent salts on the mass transfer of isobutyric acid between cumene and water

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