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The Effect of Ultrasound on Crystallisation‐Precipitation Processes: Some Examples and a New Segregation Model
Author(s) -
Dodds John,
Espitalier Fabienne,
Louisnard Olivier,
Grossier Romain,
David René,
Hassoun Myriam,
Baillon Fabien,
Gatumel Cendrine,
Lyczko Nathalie
Publication year - 2007
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.200601046
Subject(s) - nucleation , crystallization , metastability , precipitation , ultrasound , materials science , chemical engineering , chemical physics , crystallography , thermodynamics , chemistry , physics , meteorology , organic chemistry , engineering , acoustics
This paper discusses the effects of ultrasound on the production of particles by precipitation and crystallization. Examples are given from the formation of crystals of BaSO 4 , K 2 SO 4 , TiO 2 and sucrose. It is shown that ultrasound reduces the induction time, narrows the width of the metastable zone and leads to the production of more, finer, and more uniform crystals in some cases. The reasons for these effects of ultrasound on the nucleation of crystals are discussed and a possible mechanism is presented.