Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jcrysgro.2009.09.041
DC FieldValue
dc.titleEffect of Mg2+ on the kinetics of calcite crystal growth
dc.contributor.authorLin, Y.-P.
dc.contributor.authorSinger, P.C.
dc.date.accessioned2014-10-08T08:32:09Z
dc.date.available2014-10-08T08:32:09Z
dc.date.issued2009-12-15
dc.identifier.citationLin, Y.-P., Singer, P.C. (2009-12-15). Effect of Mg2+ on the kinetics of calcite crystal growth. Journal of Crystal Growth 312 (1) : 136-140. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jcrysgro.2009.09.041
dc.identifier.issn00220248
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/87491
dc.description.abstractThe effect of Mg2+ on the kinetics of calcite crystal growth was investigated using calcite-seeded solutions with a pH-stat system. Five different solution compositions with the same degree of supersaturation with respect to calcite but different CO3 2-/Ca2+ molar ratios were employed in this study. In the presence of Mg2+, calcite crystal growth rates showed a linear decrease with increasing Mg2+ concentration for the five different solutions employed. By normalizing the crystal growth rate in the presence of Mg2+ to that in the absence of Mg2+, the rate reductions in the five solutions converge to a single line when plotted against the molar ratio of Mg2+/Ca2+. The widely used "empirical degree of supersaturation model" and the simple "Langmuir adsorption model" cannot explain the observed effects of the Mg2+/Ca2+ ratio on the inhibition of calcite crystal growth. Instead, a competitive Langmuir adsorption model involving Ca2+ and Mg2+ was shown to better fit the experimental data. © 2009 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.jcrysgro.2009.09.041
dc.sourceScopus
dc.subjectA1. Inhibition
dc.subjectA1. Langmuir model
dc.subjectB1. Calcite
dc.subjectB1. Magnesium
dc.subjectB3. Crystal growth
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.description.doi10.1016/j.jcrysgro.2009.09.041
dc.description.sourcetitleJournal of Crystal Growth
dc.description.volume312
dc.description.issue1
dc.description.page136-140
dc.description.codenJCRGA
dc.identifier.isiut000272900800025
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