Study of droplet behaviour along a pulsed liquid–liquid extraction column in the presence of nanoparticles |
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| Authors: | Nafiseh Khoobi Amir Bahmanyar Hoda Molavi Dariush Bastani Mohammad Reza Mozdianfard Hossein Bahmanyar |
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| Affiliation: | 1. Department of Chemical Engineering, Sharif University of Technology, Tehran, Iran;2. Separation Processes Research Group (SPRG), Department of Engineering, University of Kashan, Kashan, Iran;3. Niroo Research Institute, Tehran, Iran;4. Surface Phenomena and Liquid–Liquid Extraction Research Laboratory, University of Tehran, Tehran, Iran |
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| Abstract: | In this article, droplet size and its distribution along a pulsed liquid–liquid extraction column, is studied where SiO2 nanoparticles with concentrations of 0.01, 0.05 and 0.1 vol.% and different hydrophobicities are applied to the dispersed phase. Using ultrasonication, nanoparticles were dispersed in kerosene as the base fluid. Nanofluids' stability was ensured using a UV–vis spectrophotometer. Some 22,000 droplets were measured by photographic technique and results were compared with systems containing no‐nanoparticles (Water–Acetic acid–Kerosene). Addition of nanoparticles changed the droplet shape from ellipsoidal to spherical. Also, there was a marked influence on droplet breakage and droplet coalescence at 0.01 vol.%, and 0.05 vol.% or higher volume fractions, respectively. © 2012 Canadian Society for Chemical Engineering |
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| Keywords: | pulsed column drop size distribution pulse intensity nanofluids |
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