Towards the establishment of a general rate law for gypsum nucleation

Reznik, Itay J.; Ganor, Jiwchar; Gruber, Chen; Gavrieli, Ittai

doi:10.1016/j.gca.2012.02.002

Cited by 32 publications

(34 citation statements)

References 26 publications

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“…An inverse relationship between Tind and Ωgypsum was found in DS-SW mixtures. Such a relationship was already described by Reznik et al [4]. This relationship is enhanced when an antiscalant is added (Fig 1).…”

Section: Resultssupporting

confidence: 81%

“…The slow kinetics and low precipitation potential of the mineral in DS brine result in negligible amounts of the mineral being precipitated in the lake. However, experimental work and thermodynamic calculations have shown that mixing between the calcium rich-DS and sulfate rich-SW or RB would lead to an increase in Ωgypsum and gypsum precipitation potential, resulting in an increase in the precipitation rate of gypsum [2][3][4]. It is thus expected that due to the RSDSP, gypsum precipitation in the lake would become much more significant.…”

Section: Case Studymentioning

confidence: 99%

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The effect of a phosphonate-based antiscalant on the morphology and precipitation kinetics of gypsum: The Red Sea – Dead Sea project

2019

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The proposed plan for the 'Red Sea – Dead Sea project' has raised concerns that the surface water of the Dead Sea would turn white due to gypsum precipitation. The occurrence of such an event would depend on the precipitation kinetics and the morphology of the precipitating crystals. Batch experiments were conducted to study the effect of a phosphonate-based antiscalant on the precipitation kinetics and morphology of gypsum under the conditions of this project. Addition of the antiscalant was found to increase the induction time by a factor of 1.2-5 over the entire range of Dead Sea – Seawater mixtures investigated, depending on brine composition. Once nucleation occurred, the antiscalant also slowed the crystal growth by a factor of 1.2-3. However, when the solutions were seeded with gypsum, the rate of crystal growth with and without antiscalant were similar, within uncertainty. More crystals precipitated from unseeded solutions with no antiscalant and the crystals were smaller and less tabular than those precipitated from unseeded solutions with antiscalant.

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Section: Resultssupporting

confidence: 81%

Section: Case Studymentioning

confidence: 99%

The effect of a phosphonate-based antiscalant on the morphology and precipitation kinetics of gypsum: The Red Sea – Dead Sea project

2019

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“…0.444, the considered mixtures become under-saturated with respect to gypsum (Ω gypsum <1). The results of gypsum saturation in the mixtures of Dead Sea water with Red sea water obtained by Reznik et al [33,35] are comparative with the results of Krumgalz and Millero [11] for the mixtures of Dead Sea water with Mediterranean Sea water.…”

Section: Introductionmentioning

confidence: 61%

“…The oversaturation of the Dead Sea with respect to gypsum and the virtual absence of gypsum crystals in suspended matter mean that the gypsum crystallization process in the Dead Sea under present conditions was limited by some kinetic factors. Recently Reznik et al [32][33][34][35] have studied kinetics of gypsum nucleation and crystal growth from Dead Sea brine and from Dead Sea and Red Sea seawater mixtures.…”

Section: Introductionmentioning

confidence: 99%

On the Problem of Gypsum Deposition in the Dead Sea in the Case of Two Seas Canal Construction

Boris¹

2019

AJPC

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The Dead Sea is a terminal lake, being the lowest and one of the most saline lakes on earth. For more than last fifty years the water level of the Dead Sea drastically decreased resulting in a drop of more than 30 m since beginning of sixties of the last century. The present level and size of the Dead Sea and its development are determined by a negative water balance between precipitation, runoff and evaporation. One of the possible ways to stop reducing the surface level of the Dead See and even to reverse this process, it is to supply seawater by connecting the Dead Sea with a world ocean system. The first and the most suitable choice discussed from the seventies of the last century was a canal connecting the Dead Sea with the Mediterranean Sea. However, due to geopolitical situation in this region the project of Dead Sea-Mediterranean Sea canal was abandoned, and another two seas canal variant has been studying for the last several decades, namely a canal between the Dead Sea and the Rea Sea via the Gulf of Eilat/Aqaba. The problems attracting the wide public attention for this canal construction are the ecological effects of mixing the waters of the Dead Sea and seawater from the Red Sea if the canal between these two seas will be built. There are some fears that under certain conditions, a layer of gypsum crystals floating on the Dead Sea surface will be formed causing some undesirable ecological effects in local environment. In the present article the rates of the deposition of gypsum crystals in the mixtures of the Dead Sea water with seawater were estimated by using the experimental viscosity and density values of these waters mixtures. The results of these calculations allowed us to assume that there is no danger that gypsum crystals, which can be formed under certain conditions during mixing of Dead Sea and seawater, will float on the Dead Sea water surface forever and after a relatively short period of time, depending on the dimensions of the crystals, gypsum crystals will sink to the bottom.

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“…O interesse industrial e geoquímico da gipsita resultou em uma quantidade considerável de pesquisas sobre o mecanismo de crescimento da gipsita tanto na presença como na ausência de diferentes tipos de aditivos químicos. [81][82] Também foram realizados estudos da adsorção de diferentes aditivos na gipsita (010). 83 Os estudos anteriores sobre as faces desse cristal foram realizados principalmente por microscopias.…”

Section: Estudos Prévios Na Gipsita (010)unclassified

Estudo da adsorção de monocamadas de água em gipsita(010) através de óptica não linear

Santos¹

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Towards the establishment of a general rate law for gypsum nucleation

Cited by 32 publications

References 26 publications

The effect of a phosphonate-based antiscalant on the morphology and precipitation kinetics of gypsum: The Red Sea – Dead Sea project

The effect of a phosphonate-based antiscalant on the morphology and precipitation kinetics of gypsum: The Red Sea – Dead Sea project

On the Problem of Gypsum Deposition in the Dead Sea in the Case of Two Seas Canal Construction

Estudo da adsorção de monocamadas de água em gipsita(010) através de óptica não linear

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