Experimental investigation of the effects of the hydrophilic silica nanoparticles on mass transfer and hydrodynamics of single drop extraction

Goodarzi, Homa Hasani; Esfahany, Mohsen Nasr

doi:10.1016/j.seppur.2016.06.038

Cited by 40 publications

(2 citation statements)

References 35 publications

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“…Several researchers have reported an increase in the nanofluid viscosity with the increase in nanoparticle loading, which in turn has reduced the mass transfer rate. [85][86][87][88][89] The increase in the number of nanoparticles dispersed in the base fluid causes the explicit drag effect on each nanoparticle due to the Brownian motion, which in turn increases the overall drag effect existing in the base fluid. Likewise, the increase in viscosity is explained by the mechanism of the surface charge of particles relating to the suspension base fluid.…”

Section: Enhancement Of K L a With Nanofluidsmentioning

confidence: 99%

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid

Shet,

Shetty K.

2024

Can J Chem Eng

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Volumetric oxygen mass transfer coefficient (kLa) is an important parameter in the design of various reactors and bioreactors. In the present work, the influence of α‐Fe2O3 nanofluid on the enhancement of kLa is studied in a pulsed plate column (PPC). An enhancement factor of greater than one showed that the nanofluid is favourable in enhancing the mass transfer rate. The effect of pulsing velocity on kLa is observed to fall under two regimes: the dispersion regime and emulsion regime. The kLa enhancement factor is found to be higher in TiO2 nanofluid than in α‐Fe2O3 nanofluid, indicating that the type of nanofluid influences the enhancement factor. The order of magnitude analysis showed that localized convection triggered by the Brownian motion of nanoparticles is the phenomenon responsible for kLa enhancement. A dimensionless multiple regression analysis (MRA) model was developed to predict kLa in the nanoparticle loading range of 0.003–0.019 (v/v%), relating the Sherwood number with oscillating Reynolds number (1200 ≤ Reo ≤ 20,000), gas flow Reynolds number (0.135 ≤ Reg ≤0.370), Schmidt number (1300 ≤ Sc ≤2700), and Brownian Reynolds number (2.81 × 10−4 ≤ ReB ≤5 × 10−4). The pseudo‐homogeneous model could accurately predict the enhancement until critical loading conditions.

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Section: Enhancement Of K L a With Nanofluidsmentioning

confidence: 99%

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid

Shet,

Shetty K.

2024

Can J Chem Eng

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“…Vergleichsweise wenige Untersuchungen wurden bisher zu Stofftransport und Fluiddynamik in mit Nanopartikel versetzten Flüssig/flüssig-Systemen durchgeführt. Einzeltropfenuntersuchungen erfolgten hauptsächlich im System Toluol/Wasser mit der Ü bergangskomponente Essigsäure und fast ausschließlich wurde der Stoffübergang von dispers nach kontinuierlich betrachtet [42,43,[45][46][47][48][49][50]. Die eingesetzten Nanopartikel wurden meist in der dispersen Toluolphase vorgelegt.…”

Section: Fallstudie Nanopartikelunclassified

Tropfenbewegung und Stofftransport in technischen Flüssig/flüssig‐Systemen. Teil 2: Auswirkung von Grenzflächeneffekten und Verunreinigungen

Schulz

Petzold

Böhm

et al. 2021

Chemie Ingenieur Technik

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. Fluiddynamik und Stofftransportprozessen kommt bei der Dimensionierung von Flüssig/flüssig-Kontaktapparaten eine entscheidende Bedeutung zu. Die Vorhersage von Betriebsparametern wird durch Schwarm-und Grenzflächeneffekte maßgeblich erschwert. Anhand von Einzeltropfenuntersuchungen kann eine grundlegende Vorhersage für fluiddynamisches Verhalten und Stofftransportleistung auf Basis einfacher Experimente und zahlreicher publizierter Korrelationen und Theorien getroffen werden. Im ersten Teil wurden die Grundlagen zur Beschreibung der Fluiddynamik und des Stofftransports für den Fall unbeeinflusster Grenzflächen erläutert. Hier wird nun ein Ü berblick über relevante Grenzflächenphänomene und den Einfluss verschiedener Stoffklassen gegeben, die als Begleitkomponenten oder Verunreinigung für technische Systeme üblich sind.

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Mass transfer study in eductor liquid–liquid extractor: Dimensional analysis and response surface methodology modeling

Hosseinzadeh

Shirvani

Ghaemi

et al. 2020

Asia-Pacific J Chem Eng

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In this work, the mass transfer performance of a new eductor liquid–liquid extractor is investigated experimentally and modeled by dimensional analysis and response surface methodology (RSM) with the utilization of water/acetic acid/toluene system. A correlation is derived for the overall mass transfer coefficient versus the Reynolds number, throat to nozzle area ratio, projection ratio, and the two phases of flow rates ratio. Based on the obtained results, the Reynolds number is known as the most effective parameter. Also, different hydrodynamic and geometrical parameters, giving the same Sauter mean diameter, have different mass transfer coefficients due to differences in droplet size distribution. In addition, the RSM studies show that the effects of the parameters are in the order of the two phases of flow rates ratio, the venturi throat to nozzle tip distance, nozzle diameter, and venturi throat diameter. The maximum overall mass transfer coefficient obtained equals to 0.000278 m/s for the studied system.

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Experimental investigation of the effects of the hydrophilic silica nanoparticles on mass transfer and hydrodynamics of single drop extraction

Cited by 40 publications

References 35 publications

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid

Tropfenbewegung und Stofftransport in technischen Flüssig/flüssig‐Systemen. Teil 2: Auswirkung von Grenzflächeneffekten und Verunreinigungen

Mass transfer study in eductor liquid–liquid extractor: Dimensional analysis and response surface methodology modeling

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Experimental investigation of the effects of the hydrophilic silica nanoparticles on mass transfer and hydrodynamics of single drop extraction

Cited by 40 publications

References 35 publications

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe2O3 nanofluid

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe2O3 nanofluid

Tropfenbewegung und Stofftransport in technischen Flüssig/flüssig‐Systemen. Teil 2: Auswirkung von Grenzflächeneffekten und Verunreinigungen

Mass transfer study in eductor liquid–liquid extractor: Dimensional analysis and response surface methodology modeling

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Product

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Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid

Experimental investigation, modelling, and order of magnitude analysis of oxygen mass transfer in pulsed plate column with α‐Fe₂O₃ nanofluid