Journal ArticleDOI
The crystallization of calcite in the presence of orthophosphate
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TLDR
In this paper, the kinetics of crystal growth of calcite seed crystals were investigated at pH 8.50, 25°C, in stable calcium carbonate supersaturated solutions, and it was found that phosphate adsorbs on calcite and the Langmuir equation gave a satisfactory fit of the data at ionic strength 0.1 mole dm−3.About:
This article is published in Journal of Colloid and Interface Science.The article was published on 1987-04-01. It has received 105 citations till now. The article focuses on the topics: Ionic strength & Seed crystal.read more
Citations
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Calcite precipitation mechanisms and inhibition by orthophosphate: In situ observations by Scanning Force Microscopy
TL;DR: In this paper, the authors used scanning force microscopy (SFM) to observe near-equilibrium calcite growth processes in solutions of known composition and saturation state and observed that when solution saturations with respect to calcite were greater than 1-2, precipitation began with the formation of surface nuclei.
Calcite precipitation mechanisms and inhibition by orthophosphate: In situ observations by scanning force microscopy
TL;DR: In this paper, a pH-stat method was used to detect calcite seeds in solutions of known calcite saturation state at 25 C for 1--2 days before transferring to an SFM fluid cell for continued reaction in the same solutions.
Journal ArticleDOI
The transformation of vaterite to calcite: effect of the conditions of the solutions in contact with the mineral phase
N. Spanos,Petros G. Koutsoukos +1 more
TL;DR: In this paper, the transformation of vaterite into calcite was investigated under conditions of constant supersaturation at 25, 35 and 45°C and pHs 8.5, 9.0 and 10.0.
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Influence of low-molecular-weight and macromolecular organic additives on the morphology of calcium carbonate
Jon M. Didymus,P. M. Oliver,Stephen Mann,Arthur L. DeVries,Peter V. Hauschka,Peter Westbroek +5 more
TL;DR: The influence of a range of soluble biological and related molecules on the crystallization of CaCO3 from aqueous supersaturated solution has been studied by optical and scanning electron microscopy and X-ray diffraction as discussed by the authors.
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Kinetics of Precipitation of Calcium Carbonate in Alkaline pH at Constant Supersaturation. Spontaneous and Seeded Growth
N. Spanos,Petros G. Koutsoukos +1 more
TL;DR: In this article, the seeded and unseeded precipitation of calcium carbonate from supersaturated aqueous solutions was investigated in a closed system under conditions of constant supersaturation (supersaturation 1.88−3.39) at 25 °C and at pH 9.0 and 10.0.
References
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Calculation of the electrophoretic mobility of a spherical colloid particle
TL;DR: In this article, a new calculation of the relation between the electrophoretic mobility and the ζ-potential of a spherical colloid particle is presented, which consists of a rigid, electrically insulating sphere surrounded by a Gouy-Chapman double layer.
Calculation of the Electrophoretic Mobility of a Spherical
TL;DR: In this paper, a new calculation of the relation between the electrophoretic mobility and the/potential of a spherical colloid particle is presented, which consists of a rigid, electrically insulating sphere surrounded by a Gouy-Chapman double layer.
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Crystallization of calcium phosphates. A constant composition study
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The crystallization of calcium carbonate. II. Calcite growth mechanism
TL;DR: In this paper, the activation energy for crystal growth is 11.0 ± 1.0 kcal mole−1, and the rate is independent of the stirring rate, and photomicrographic evidence is presented in support of the suggestion that the initial surge in the growth curves results from additional nucleation at the surface of the added calcite crystals and in the bulk of the supersaturated solution.
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The crystallization of calcium carbonate
TL;DR: In this paper, the kinetics of calcite at 25°C were examined by following the changes in calcium and hydrogen ion concentration when stable supersaturated solutions are inoculated with calcite seed crystals.