Effect of Solution Stoichiometry on BaSO4Crystallization from Turbidity Measurements and Modeling

Autor: Peters, V. F. D., Baken, A., Seepma, S. Y. M. H., Koskamp, J. A., Fernández-Martínez, A., van Driessche, A. E. S., Wolthers, M.
Zdroj: Industrial & Engineering Chemistry Research; 20230101, Issue: Preprints
Abstrakt: The impact of solution stoichiometry on the nucleation and growth of BaSO4was studied by measuring solution transmittance and subsequent fitting to a crystallization model. Our results show that a large excess of either Ba2+or SO42–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 BaSO4crystallization, and it could be worthwhile to examine other minerals similarly.
Databáze: Supplemental Index