Multicomponent and Contamination Effects on Mass Transfer in a Liquid–Liquid Extraction Rotating Disc Contactor

Brodkorb, M.J.; Slater, M.J.

doi:10.1205/026387601750281699

Cited by 14 publications

(6 citation statements)

References 5 publications

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“…The empirical correlation was developed based on the experimental measurements with the shutdown procedure. As Brodkorb and Slater expounded, this procedure always gives low holdup results because some droplets can be trapped under stators, which is known as the static holdup. Usually, the static holdup is very small.…”

Section: Resultsmentioning

confidence: 99%

Key Parameter Prediction and Validation for a Pilot-Scale Rotating-Disk Contactor by CFD–PBM Simulation

Chen

Sun

Song

et al. 2014

Ind. Eng. Chem. Res.

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Compared with traditional methods, computational fluid dynamics−population balance model (CFD−PBM) simulations are much more efficient for the design of extractors. In this study, the CFD−PBM framework was established for a pilot-scale rotating-disk contactor. The Euler−Euler approach incorporated with the realizable k−ε model was used for the twophase simulation. For droplet coalescence and breakage, predictive closures based on the model of Luo and Svendsen were employed for further verification. The species transport model was also solved to estimate axial mixing. The model was validated first by comparing the flow field with referenced particle image velocimetry data. Then the predicted key parameters of droplet diameter, dispersed-phase holdup, and Peclet number were compared with empirical correlations for a comprehensive validation.The results indicate that the predictive CFD−PBM is suitable for the design of extraction columns. Its average deviations on the three parameters are 15.7%, 12.9%, and 15.2%, respectively. The model also successfully predicts the regular variations of the droplet diameter and holdup with the rising agitation rate, which contribute to the validation.

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Section: Resultsmentioning

confidence: 99%

Key Parameter Prediction and Validation for a Pilot-Scale Rotating-Disk Contactor by CFD–PBM Simulation

Chen

Sun

Song

et al. 2014

Ind. Eng. Chem. Res.

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“…A toluene/acetone/MIPK/water mixture, which constitutes the quaternary system, was chosen because of the different solubilities of both transferring components in toluene and water. Multicomponent effects are usually more pronounced in such systems 7. In earlier works,3, 7 in which another quaternary system—toluene/acetone/phenol/water—was studied, the authors found that in systems with similar transport behavior of both transferring components characteristic multicomponent effects could not be observed.…”

Section: Introductionmentioning

confidence: 95%

A CFD model for mass transfer and interfacial phenomena on single droplets

Burghoff

Kenig

2006

AIChE Journal

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in Wiley InterScience (www.interscience.wiley.com).Mass transfer and interfacial phenomena during simultaneous extraction of two components from a single spherical droplet to a surrounding continuous phase were investigated both experimentally and theoretically. The experiments were carried out in a single droplet measuring cell in which the mass transfer of acetone and methylisopropylketone from the disperse toluene phase to the continuous aqueous phase was investigated. The developed model takes into consideration the cross-effects of multicomponent mass transfer and the onset of Marangoni convection induced by mass transfer. The influence of Marangoni convection on the velocity field around the droplet was analyzed. The developed model was implemented into the commercial computational fluid dynamics software package CFX4.3. The results of the performed simulations agree well with experimental data. Influences of Reynolds numbers of the continuous phase and initial mass fraction on the extraction process were analyzed. Furthermore, the effect of multicomponent mass transfer on the onset of Marangoni convection was studied.

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“…The surface tension of a liquid mixture is not a simple function of the surface tension of the pure components, because in a mixture the composition of the surface is not the same as that of the bulk. − Alcohols, either alone or in solutions (water, acetonitrile), are very widely used in the chemical, pharmaceutical, chromatography, and cosmetic industries. − In the present paper we report surface tensions of the ternary system water/acetonitrile/2-propanol and of the corresponding binary mixtures, that is, water/acetonitrile, water/2-propanol, and acetonitrile/2-propanol at 298.15 K and atmospheric pressure. The ternary system water/acetonitrile/2-propanol covers a large range of polarity from the highly polar water and acetonitrile to mildly polar 2-propanol.…”

Section: Introductionmentioning

confidence: 96%

Experimental Data and Correlation of Surface Tensions of the Binary and Ternary Systems of Water + Acetonitrile + 2-Propanol at 298.15 K and Atmospheric Pressure

2010

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This paper reports the results of a new experimental study of surface tension for the ternary mixtures of water/acetonitrile/2-propanol. Correlating the excess surface tension of the above-mentioned binary and ternary systems was performed with empirical and thermodynamic based models. The methods of Pando et al. and Ku et al. were used to correlate the ternary surface tension data. The ternary surface tension data were well-correlated using pair additivity and rational functions as the ternary term. The results provide information on the molecular interactions between the unlike molecules that exist at the surface and the bulk.

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Multicomponent and Contamination Effects on Mass Transfer in a Liquid–Liquid Extraction Rotating Disc Contactor

Cited by 14 publications

References 5 publications

Key Parameter Prediction and Validation for a Pilot-Scale Rotating-Disk Contactor by CFD–PBM Simulation

Key Parameter Prediction and Validation for a Pilot-Scale Rotating-Disk Contactor by CFD–PBM Simulation

A CFD model for mass transfer and interfacial phenomena on single droplets

Experimental Data and Correlation of Surface Tensions of the Binary and Ternary Systems of Water + Acetonitrile + 2-Propanol at 298.15 K and Atmospheric Pressure

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