Effect of Solution Stoichiometry on BaSO4 Crystallization from Turbidity Measurements and Modeling

The impact of solution stoichiometry on the nucleation and growth of BaSO4 was studied by measuring solution transmittance and subsequent fitting to a crystallization model. Our results show that a large excess of either Ba2+ or SO4 2– ions inhibits both the nucleation and growth of BaSO4. However,...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2024-01, Vol.63 (1), p.78-88
Main Authors: Peters, V. F. D., Baken, A., Seepma, S. Y. M. H., Koskamp, J. A., Fernández-Martínez, A., van Driessche, A. E. S., Wolthers, M.
Format: Article
Language:English
Subjects:
Applied Chemistry
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Summary:The impact of solution stoichiometry on the nucleation and growth of BaSO4 was studied by measuring solution transmittance and subsequent fitting to a crystallization model. Our results show that a large excess of either Ba2+ or SO4 2– ions inhibits both the nucleation and growth of BaSO4. However, for a small excess of Ba2+, the growth is enhanced. The dependence of nucleation and growth rates on supersaturation and solution stoichiometry was captured by a semiempirical rate model. Hence, the solution stoichiometry is a highly relevant parameter while studying all aspects of BaSO4 crystallization, and it could be worthwhile to examine other minerals similarly.
ISSN:0888-5885
1520-5045
DOI:10.1021/acs.iecr.3c03612