Hydrodynamic performance of a pulsed extraction column containing ZnO nanoparticles: Drop size and size distribution

Amani, Pouria; Amani, Mohammad; Saidur, R.; Yan, Wei‐Mon

doi:10.1016/j.cherd.2017.03.017

Cited by 23 publications

(9 citation statements)

References 54 publications

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“…The maximum entropy approach is another method which is recently developed in order to evaluate the droplet size distribution in extraction columns [77]. It was found that the maximum entropy method has better ability to predict the experimental data.…”

Section: Hydrodynamic Characteristicsmentioning

confidence: 99%

“…The authors proposed a new correlation for the prediction of mean drop size in terms of the operational parameters, physical properties, and nanoparticle concentration. Furthermore, the maximum entropy principle was found to be an appropriate method for modeling the drop size distribution in pulsed plate columns [77].…”

Section: Effect Of Nanoparticles On Droplets Behaviormentioning

confidence: 99%

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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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Section: Hydrodynamic Characteristicsmentioning

confidence: 99%

Section: Effect Of Nanoparticles On Droplets Behaviormentioning

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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“…In the liquid-liquid extraction step, extraction columns with high removal capability for sulfurcontaining compounds should be applied. Various extraction columns, including a rotating disk contactor (Torab-Mostaedi et al, 2017;Asadollahzadeh et al, 2016), Kuhni column (Hemmati et al, 2015;Arab et al, 2017;Oliveira et al, 2008), packed column (Rahbar-Kelishami and Bahmanyar, 2012;Torab-Mostaedi and Safdari, 2009), pulsed column (Amani et al, 2017;Khooshechin et al, 2013;Usman et al, 2009), tray column (Sincuba et al, 2017), and spray column (Salimi-Khorshidi et al, 2013), are available. Single drop tests can provide valuable insights regarding the hydrodynamics of the complex systems in the liquidliquid extraction.…”

Section: Introductionmentioning

confidence: 99%

Separation of Sulfur-Containing Compounds From Diesel by Oxidation Followed by Solvent Extraction in a Single Drop Column

Dana

Sobati

Shahhosseini

et al. 2019

Braz. J. Chem. Eng.

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Oxidative desulfurization (ODS) is an attractive complementary or alternative process for the hydrodesulfurization (HDS) process due to advantages such as mild operating conditions. In the ODS process, the sulfur-containing compounds are oxidized first to polar sulfoxide and sulfone products and then these polar compounds are separated using solvent extraction or an adsorption process. In the present study, the separation of oxidized sulfur-containing compounds of diesel as a real fuel has been investigated using extraction in a single drop column. The oxidation system was hydrogen peroxide/formic acid. The selected solvent for the extraction of oxidized sulfur-containing compounds was dimethylformamide (DMF). In single drop tests, the effect of various parameters including the drop size (1.70-4.60 mm) and column height (228-550 mm) on the different parameters such as drop velocity and sulfur concentration in the dispersed and continuous phases has been investigated. The outcome of this study provides valuable insights for designing the extraction column for separation of oxidized sulfur-containing compounds from middle distillate fuels in an ODS process.

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“…Drop size and dispersed phase holdup together, determine the interfacial tension required for mass transfer . Therefore, it is important to be able to anticipate the mean drop size as a function of the column geometry, operating parameters and the physical properties of liquid–liquid systems in order to design and analyze the performance of Scheibel extraction column.…”

Section: Introductionmentioning

confidence: 99%

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

Houshyar

Torab‐Mostaedi

Mousavi

et al. 2017

Asia-Pacific J Chem Eng

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In this study, the effect of hydrodynamic parameters such as rotor speed, dispersed phase velocity, continuous phase velocity on the drop size distribution and the Sauter mean-drop diameter (d 32 ) were studied in the absence and presence of silica nanoparticles with the different weight fraction of them (0.01, 0.03 and 0.05 wt%) in a Scheibel extraction column. The experiment was conducted in a toluene/water system, and the results indicated that the effect of the rotor speed on the Sauter mean-drop diameter was far more significant than the effect of the dispersed and continuous phase velocities. Also, the effects of the hydrodynamic parameters are more significant in lower concentration of silica nanoparticles. The log-normal probability distribution function was used to predict the drop-size distribution. Furthermore, some correlations were presented to anticipate the parameters of this function and the mean drop size in terms of the operating parameters and the physical properties of the systems. These equations conformed well to the empirical data. Figure 5. Effect of silica nanoparticles concentration on d 32 (V d = V c = 8.8 × 10 À4 (m/s)).

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Hydrodynamic performance of a pulsed extraction column containing ZnO nanoparticles: Drop size and size distribution

Cited by 23 publications

References 54 publications

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

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

Separation of Sulfur-Containing Compounds From Diesel by Oxidation Followed by Solvent Extraction in a Single Drop Column

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

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