Effect of ultrasound on the induction time and the metastable zone widths of potassium sulphate

A study of cooling crystallisation of a potassium sulphate solution in a batch reactor is described in this paper. The effect of ultrasound on primary nucleation was investigated by measures of induction time and metastable zone width of unseeded solutions. The appearance of crystals is detected by...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2002-04, Vol.86 (3), p.233-241
Main Authors: Lyczko, Nathalie, Espitalier, Fabienne, Louisnard, Olivier, Schwartzentruber, Jacques
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Cross-disciplinary physics: materials science
rheology
Crystallization, leaching, miscellaneous separations
Engineering Sciences
Exact sciences and technology
Growth from solutions
Induction time
Materials science
Metastable zone
Methods of crystal growth
physics of crystal growth
Nucleation
Physics
Potassium sulphate
Theory and models of crystal growth
physics of crystal growth, crystal morphology and orientation
Ultrasound
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Summary:A study of cooling crystallisation of a potassium sulphate solution in a batch reactor is described in this paper. The effect of ultrasound on primary nucleation was investigated by measures of induction time and metastable zone width of unseeded solutions. The appearance of crystals is detected by conductivity measurements. The experimental results show that ultrasound has an effect on the primary nucleation of potassium sulphate. Ultrasound allows induction time and metastable zone width to be significantly reduced.
ISSN:1385-8947
1873-3212
DOI:10.1016/S1385-8947(01)00164-4