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A Review on Possible Mechanisms of Sonocrystallisation in Solution

Nalesso, Silvia, Bussemaker, Madeleine J., Sear, Richard P., Hodnett, Mark and Lee, Judy (2019) A Review on Possible Mechanisms of Sonocrystallisation in Solution Ultrasonics Sonochemistry.

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Sonocrystallisation is the application of ultrasound to the crystallisation process. The benefits obtained by sonication have been widely studied since the beginning of the 20th century and so far it is clear that ultrasound can be a very useful tool for enhancing crystallisation and controlling the properties of the final product. Crystal size, polymorphs, purity, process repeatability and lower induction time are only some of the advantages of sonocrystallisation. Even though the effects of sonication on crystallisation are quite clear, the physical explanation of the phenomena involved is still lacking. Is the presence of cavitation necessary for the process? Or is only the bubbles surface responsible for enhancing crystallisation? Are the strong local increases in pressure and temperature induced by cavitation the main cause of all the observed effects? Or is it the strong turbulence induced in the system, instead? Many questions still remain and can only be appreciated with an understanding of the complexity behind the individual processes of crystallisation and acoustic cavitation. Therefore, this review will first summarise the theories behind crystallisation and acoustic cavitation, followed by a description of all the current proposed sonocrystallisation mechanisms, and conclude with an overview on future prospects of sonocrystallisation applications.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Bussemaker, Madeleine
Sear, Richard
Hodnett, Mark
Date : 2019
DOI : 10.1016/j.ultsonch.2019.04.020
Copyright Disclaimer : © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Uncontrolled Keywords : Sonocrystallization Mechanisms; Acoustic cavitation; Crystal nucleation; Sono-deagglomeration, Sono-agglomeration; Sono-fragmentation
Depositing User : Clive Harris
Date Deposited : 10 May 2019 11:39
Last Modified : 10 May 2019 11:39

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