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Utilizing Low-Voltage Pulsed Electric Fields for Mass Transfer Intensification of Drops in Liquid–Liquid Extraction

Cite this: Ind. Eng. Chem. Res. 2021, 60, 4, 1532–1541
Publication Date (Web):January 19, 2021
https://doi.org/10.1021/acs.iecr.0c05952
Copyright © 2021 American Chemical Society

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    Abstract

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    Low-voltage pulsed electric fields, corresponding to field strengths of 2–16 V/cm, were utilized for mass transfer intensification of drops in a liquid–liquid extraction process. The chemical system of kerosene–acetic acid–water was used in which mass transfer resistance lies mainly in the kerosene phase. The applied frequencies were within 100–1000 Hz. In a hydrodynamic study, the circulating state of drops was confirmed based on different criteria and their terminal velocity precisely followed the Grace model. A mass transfer study of drops, on the other hand, revealed the strong impact of a pulsed electric field with the average and maximum enhancements of 30.3 and 70.5%. This can be attributed to the interfacial instability due to switching poles in the pulsed electric field. An optimum frequency of about 300 Hz corresponded to the applied voltages. Applying a direct electric field also had desired effects but in a lower extent. The provided mass transfer coefficient data were reproduced based on the Kumar and Hartland correlation together with a developed correlation of the enhancement factor in terms of dimensionless field strength, frequency, and the drops’ Reynolds number. The maximum deviation between experimental and predicted Sherwood numbers was ±5%.

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    Cited By

    This article is cited by 7 publications.

    1. Samaneh Parvaneh, Sina Shekarsaraee. Liquid–Liquid Equilibrium Study of the Ternary Systems (Water + Propionic or Butyric Acids + Kerosene) at T = (293.2, 303.2, and 313.2) K and Ambient Pressure. Journal of Chemical & Engineering Data 2024, 69 (4) , 1685-1698. https://doi.org/10.1021/acs.jced.3c00701
    2. Shuchun Zhao, Guixuan Shan, Xinhui Yang, Kangkang Ma, Wei Li, Jinli Zhang. Study of liquid-liquid extraction and mass transfer process with solid particles in the inline teethed high shear mixer. Separation and Purification Technology 2023, 314 , 123559. https://doi.org/10.1016/j.seppur.2023.123559
    3. Mohit Trivedi, Aakriti Sharma, Kalyani Agarwal, Rajendra P. Chhabra, Neelkanth Nirmalkar. On enhancing interfacial mass transport through microextraction in dispersed droplet systems. International Journal of Heat and Mass Transfer 2023, 203 , 123776. https://doi.org/10.1016/j.ijheatmasstransfer.2022.123776
    4. Nan Wang, Laurence Weatherley. Electric field-intensified chemical processes and reaction chemistry. Current Opinion in Chemical Engineering 2023, 39 , 100895. https://doi.org/10.1016/j.coche.2022.100895
    5. Elham Ansarifar, Sara Hedayati, Seid Mahdi Jafari. Thawing equipment for the food industry. 2023, 175-224. https://doi.org/10.1016/B978-0-12-818618-3.00010-0
    6. Farnaz Jafari, Javad Saien, Alimorad Rashidi. Mass transfer intensification for carbon quantum dot nanofluid drops under pulsed electric fields. Scientific Reports 2022, 12 (1) https://doi.org/10.1038/s41598-022-16663-9
    7. Farnaz Jafari, Javad Saien. Experimental and model study for liquid–liquid extraction of conductive nanofluid drops under low voltage pulsed electric fields. Chemical Engineering Science 2022, 258 , 117762. https://doi.org/10.1016/j.ces.2022.117762

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