Journal ArticleDOI
Crystal growth of calcium sulphate dihydrate at low supersaturation
TLDR
In this article, the growth rate of calcium sulphate dihydrate crystals, gypsum, in aqueous suspension has been shown to be screw dislocation controlled in the supersaturation range 1.03 C C s.About:
This article is published in Journal of Crystal Growth.The article was published on 1982-08-01. It has received 84 citations till now. The article focuses on the topics: Supersaturation & Growth rate.read more
Citations
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Scale Formation and Control in High Pressure Membrane Water Treatment Systems: A Review
TL;DR: In this paper, the authors consider the mechanism of scale formation and the properties of alkaline, non-alkaline and silica based scales that are encountered when reverse osmosis is used in desalination, brackish water and wastewater recycling applications.
Journal ArticleDOI
Concentration of Mn and separation from Fe in sediments—I. Kinetics and stoichiometry of the reaction between birnessite and dissolved Fe(II) at 10°C
TL;DR: In this article, the authors studied the reaction between dissolved Fe2+ and synthetically prepared birnessite (Mn7O13·5H2O) in the pH range 3-6.
Journal ArticleDOI
Determination of interfacial tension from crystallization and dissolution data: a comparison with other methods
Wenju Wu,George H. Nancollas +1 more
TL;DR: Methods for the determination of interfacial tension between a solid and a liquid are reviewed including solubility/particle size, crystallization and dissolution kinetics, and the use ofsolubility as a function of particle size may be unjustified.
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Removal of sulfate from high-strength wastewater by crystallisation
TL;DR: Given the lack of complex precipitates, and relatively high solubility, gypsum crystallisation cannot practically be used to remove sulfate to very low levels, and gas-sulfide treatment will likely still be required.
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Crystallization of calcium sulfate dihydrate in the presence of some metal ions
TL;DR: In this paper, the authors showed that the addition of metal ions, even at relatively low concentration (10 −6 ǫl −1 ), markedly retard the rate of crystallization of gypsum.
References
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Journal ArticleDOI
The Growth of Crystals and the Equilibrium Structure of their Surfaces
TL;DR: In this paper, it was shown that the rate of growth of a surface containing dislocations is proportional to the square of the supersaturation for low values and to the first power for high values of the latter.
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Interfacial tensions electrolyte crystal-aqueous solution, from nucleation data
Arne E. Nielsen,O. Söhnel +1 more
TL;DR: This paper showed that the hydration of ions and the wetting of the surface of an electrolyte crystal are very similar phenomena that can be described by the same interfacial tension, which supports the theory that ion hydration and surface wetting are similar phenomena.
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The kinetics of crystal growth of calcium sulfate dihydrate
TL;DR: In this paper, the authors studied the crystallization of calcium sulfate dihydrate on the addition of seed crystals to stable supersaturated solutions at various temperatures between 15 and 45 °C.
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The kinetics of dissolution of calcium sulphate dihydrate in water
TL;DR: In this article, a method for analyzing data from dissolution experiments during which there is a large variation in the sizes and in the number of crystals is developed, where the rate dependence on concentration is the same for all the crystals and they maintain their original geometries, and the dependence of the rate of dissolution on concentration independent of the size distribution of the crystals.
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The crystallization of calcium sulfate dihydrate
B.R Smith,Frank Sweett +1 more
TL;DR: In this paper, a dilatometric study of the crystallization of calcium sulfate dihydrate from aqueous solution at 30°C in the absence of added seed crystals indicated that nucleation was heterogeneous.