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Influence of mixing and ultrasound frequency on antisolvent crystallisation of sodium chloride

Lee, J, Ashokkumar, M and Kentish, SE (2014) Influence of mixing and ultrasound frequency on antisolvent crystallisation of sodium chloride Ultrasonics Sonochemistry, 21 (1). pp. 60-68.

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Ultrasound is known to promote nucleation of crystals and produce a narrower size distribution in a controlled and reproducible manner for the crystallisation process. Although there are various theories that suggest cavitation bubbles are responsible for sonocrystallisation, most studies use power ultrasonic horns that generate both intense shear and cavitation and this can mask the role that cavitation bubbles play. High frequency ultrasound from a plate transducer can be used to examine the effect of cavitation bubbles without the intense shear effect. This study reports the crystal size and morphology with various mixing speeds and ultrasound frequencies. The results show high frequency ultrasound produced sodium chloride crystals of similar size distribution as an ultrasonic horn. In addition, ultrasound generated sodium chloride crystals having a more symmetrical cubic structure compared to crystals produced by a high shear mixer.

Item Type: Article
Subjects : Chemical and Process Engineering
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Ashokkumar, M
Kentish, SE
Date : 1 January 2014
DOI : 10.1016/j.ultsonch.2013.07.005
Copyright Disclaimer : Copyright © 2013 Elsevier B.V.
Uncontrolled Keywords : Science & Technology, Technology, Physical Sciences, Acoustics, Chemistry, Multidisciplinary, Chemistry, ACOUSTICS, CHEMISTRY, MULTIDISCIPLINARY, Sonocrystallisation, Anti-solvent, Sodium chloride, High frequency, FEED SEMIBATCH PRECIPITATION, MICROMIXING EFFICIENCY, REACTION SYSTEM, REACTOR, SONOCRYSTALLIZATION, MORPHOLOGY, PARTICLES, SULFATE, WATER, SIZE
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 19 Jul 2016 14:17
Last Modified : 30 Jul 2020 16:10

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