Effects of silica nanoparticles on the mean drop size and drop‐size distribution in a Scheibel extraction column

Houshyar, Shahrokh; Torab‐Mostaedi, Meisam; Mousavi, Seyed Hamed; Moosavian, Seyed Mohammad Ali

doi:10.1002/apj.2089

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…Solvent extraction is a highly effective separation method since it provides various advantages including selective separation, high flexibility of operations, various solvents, etc. [1][2][3]. Many different types of column internals and mechanical agitation options have been developed for solvent extraction columns to increase the column efficiency.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Concentration Profiles in an L‐Shaped Pulsed Extraction Column

et al. 2019

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The L-shaped extraction pulsed plate column is believed to be able to perform under operating conditions between those of the vertical and the horizontal pulsed plate columns. It has an extraction efficiency similar to the vertical pulsed plate column. Here, the mass transfer performance of this novel column type was investigated and the application of three different models, i.e., the plug flow, the axial dispersion, and the back flow models, was evaluated to predict the solute concentration profile along the column length. The water-acetone-n-butyl acetate and the water-acetone-toluene systems were used. The influence of the operational parameters on the height of the mass transfer unit and the back flow coefficients was evaluated using the back flow model. New correlations were proposed to predict the height of the mass transfer unit along with the back flow coefficients in each phase, which were in satisfactory agreement with the experimental data.

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Section: Introductionmentioning

confidence: 99%

Prediction of Concentration Profiles in an L‐Shaped Pulsed Extraction Column

et al. 2019

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“…However, they are one of the best options when a high number of stages are required. Houshyar et al [122] investigated the effect of All previous investigations have considered the effects of operating parameters including energy input (pulsation intensity or rotor speed) and the flow rates of the phases on the hydrodynamic and mass transfer performance of extraction columns. However, the operating temperature has also been demonstrated to strongly affect the characteristics and physical properties of nanofluids [123].…”

Section: Contactors With Mechanical Agitationmentioning

confidence: 99%

“…At lower concentrations of silica nanoparticles, the influence of the operating parameters (agitation speed and the flow rates of both phases) was much more significant, while with further increase in nanoparticle concentration, their influence was reduced. The log-normal probability distribution function for the droplet size was found to provide the most accurate prediction[122].…”

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confidence: 99%

A critical review on the use of nanoparticles in liquid–liquid extraction

Amani

Ahmadi

et al. 2018

Chemical Engineering Science

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Recently, the use of nanoparticles in extraction columns has gained increasing attention due to their potential to enhance mass transfer processes. Most of the reported work, however, has been concerned with mass transfer enhancement in gas-liquid systems in the presence of nanoparticles, while limited studies of liquid-liquid systems have been reported. Liquidliquid extraction is an extensively employed separation method that has taken on a substantial role in engineering and industrial applications for recovery processes. Therefore, the aim of this review article is to provide an overview of the state-of-the-art from the available literature on the effect of nanoparticles on the hydrodynamic behavior and mass transfer performance of liquid-liquid systems. Attention is also given to providing an understanding of the mechanisms responsible for the improvements in mass transfer with the use of nanoparticles. In the majority of studies, the presence of nanoparticles was found to be beneficial and to lead to improved mass transfer, although a few investigations reported a detrimental impact of nanoparticles. The literature does not clearly describe the conditions under which the addition of nanoparticles would be unfavorable. Moreover, the addition of nanoparticles always introduces potential drawbacks, such as sedimentation, accumulation, or clogging inside extraction columns, as well as the need to separate the nanoparticles at the outlets. These drawbacks have not been considered in the literature, limiting the practical employment of nanoparticles in this industry.

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