Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6123
Title: Stability of CaCO3 in Ca(OH)2 solution
Authors: Kılıç, Sevgi
Toprak, Görkem
Özdemir, Ekrem
Keywords: Ca(OH)2
CaCO3
Calcium carbonate
Zeta potential
Calcium hydroxide
Issue Date: 10-Feb-2016
Publisher: Elsevier Ltd.
Source: Kılıç, S., Toprak, G., and Özdemir, E. (2016). Stability of CaCO3 in Ca(OH)2 solution. International Journal of Mineral Processing, 147, 1-9. doi:10.1016/j.minpro.2015.12.006
Abstract: The effect of calcium hydroxide (Ca(OH)2) on the stability of calcium carbonate (CaCO3) particles was investigated with respect to the surface potential and particle size. Both CaCO3 and Ca(OH)2 were dissolved in ultrapure water at concentrations up to 100 mM. The solubility limits were about 18 mM for Ca(OH)2 and about 0.13 mM for CaCO3 at 23 °C in water. Dissolution of commercial CaCO3 in 10 mM of Ca(OH)2 solution and dissolution of Ca(OH)2 in 10 mM of CaCO3 slurry were also studied at similar conditions. Conductivity, pH, zeta potential, and average particle sizes were measured for each solution. The morphological characteristics of the particles were analyzed by the SEM images. It was found that the zeta potential of CaCO3 particles was greater than + 30 mV when they were placed in the Ca(OH)2 solution compared to a zeta potential value of - 10 mV in water. It was concluded that the Ca(OH)2 solution is a stabilizer for the CaCO3 particles.
URI: http://doi.org/10.1016/j.minpro.2015.12.006
http://hdl.handle.net/11147/6123
ISSN: 0301-7516
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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