Solubility Measurements and Predictions of Gypsum, Anhydrite, and Calcite Over Wide Ranges of Temperature, Pressure, and Ionic Strength with Mixed Electrolytes

Dai, Zhaoyi; Kan, Amy T.; Shi, Wei; Zhang, Nan; Zhang, Fangfu; Yan, Fei; Bhandari, Narayan; Zhang, Zhang; Liu, Ya; Ruan, Gedeng; Tomson, Mason B.

doi:10.1007/s00603-016-1123-9

Cited by 55 publications

(32 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Gypsum solubility under different temperatures is well studied. However, the reported temperature at which it is the stable calcium sulfate mineral widely varies [47,[61][62][63][64][65]. The stability field of the three calcium sulfate minerals is crucial for understanding the natural occurrence of gypsum.…”

Section: Range Of Gypsum Stabilitymentioning

confidence: 99%

Gypsum Precipitation under Saline Conditions: Thermodynamics, Kinetics, Morphology, and Size Distribution

et al. 2021

View full text Add to dashboard Cite

Gypsum (CaSO4·2H2O) is the most common sulfate mineral on Earth and is also found on Mars. It is an evaporitic mineral that predominantly precipitates from brines. In addition to its precipitation in natural environments, gypsum also forms an undesired scale in many industrial processes that utilize or produce brines. Thus, better insights into gypsum formation can contribute to the understanding of natural processes, as well as improving industrial practices. Subsequently, the thermodynamics, nucleation and crystal growth mechanisms and kinetics, and how these factors shape the morphology of gypsum have been widely studied. Over the last decade, the precipitation of gypsum under saline and hypersaline conditions has been the focus of several studies. However, to date, most of the thermodynamic data are derived from experiments with artificial solutions that have limited background electrolytes and have Ca2+/SO42− ratios that are similar to the 1:1 ratio in the mineral. Moreover, direct observations of the nucleation and growth processes of gypsum are still derived from experimental settings that can be described as having low ionic strength. Thus, the mechanisms of gypsum precipitation under conditions from which the mineral precipitates in many natural environments and industrial processes are still less well known. The present review focuses on the precipitation of gypsum from a range of aspects. Special attention is given to brines. The effects of ionic strength, brine composition, and temperature on the thermodynamic settings are broadly discussed. The mechanisms and rates of gypsum nucleation and growth, and the effect the thermodynamic properties of the brine have on these processes is demonstrated by recent microscopic and macroscopic observations. The morphology and size distribution of gypsum crystals precipitation is examined in the light of the precipitation processes that shape these properties. Finally, the present review highlights discrepancies between microscopic and macroscopic observations, and studies carried out under low and high ionic strengths. The special challenges posed by experiments with brines are also discussed. Thus, while this review covers contemporary literature, it also outlines further research that is required in order to improve our understanding of gypsum precipitation in natural environments and industrial settings.

show abstract

Section: Range Of Gypsum Stabilitymentioning

confidence: 99%

Gypsum Precipitation under Saline Conditions: Thermodynamics, Kinetics, Morphology, and Size Distribution

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Gypsum, composed of hydrated calcium sulfate (CaSO 4 , 2H 2 O), is a moderately soluble mineral. Its solubility in water is 2.5 g/L at 25 • C. Gypsum is different from most other solutes in that it reveals retrograde or inverse temperature dependent solubility behavior (Rolnick, 1954;Klimchouk, 1996;Lebedev, 2015;Dai et al, 2016). Gypsum exists in many geological formations.…”

Section: Introductionmentioning

confidence: 99%

“…It is therefore important to have a better knowledge on the dissolution mechanisms in the regions of gypsum occurrence and to quantify the key parameters involved in the water-gypsum interaction. Classical experimental methods used to determine dissolution kinetics parameters focus on the concentration of the dissolved species produced in solution from the combined effect of both diffusion and convection using experiments under well-controlled flow conditions such as rotating disk setups or flow cell devices (Barton and Wilde, 1971;Liu and Nancollas, 1971;James and Lupton, 1978;Jeschke et al, 2001;Wang et al, 2010;Lebedev, 2015;Dai et al, 2016). More recent experiments focus on characterizing kinetic processes at a nanometric scale by measuring atomic force (Dove and Platt, 1996;Burgos-Cara et al, 2016;Zareeipolgardan et al, 2017) or holographic interferometry (Colombani and Bert, 2007).…”

Section: Introductionmentioning

confidence: 99%

The dissolution kinetics of natural gypsum: a case study of Eocene facies in the north-eastern suburbs of Paris

et al. 2021

View full text Add to dashboard Cite

The dissolution kinetics of different varieties of natural gypsum samples with different porosity and content of insoluble impurities are experimentally investigated under unsaturated conditions. The main goal of this work is to verify whether and how the petrophysical and petrographic nature of gypsum influence its dissolution rate. Gypsum samples were taken from Priabonian (Ludian) and Lutetian formations located in the north-eastern suburbs of Paris, where the development of sinkholes due to gypsum dissolution is a common phenomenon. Experiments using the rotating disk technique allow us to determine the kinetic rate model parameters of each sample in pure water following the empirical rate expression derived from mixed kinetic theory. The kinetic order n shows a dispersion around a mean value n = 1.2 and k, the pure dissolution rate coefficient varies according to the facies and the experimental conditions (k≈1×10 −6 to 8×10 −6 mmol/cm 2 /s). These results are adjusted according to the specific roughness and texture of each sample, for the results to be more representative of in-situ conditions. Batch experiments are also performed in order to evaluate the extremely low dissolution rates when the solution is close to equilibrium. The results reveal a double kinetics: far from equilibrium, the dissolution rates show that the linear behavior and the kinetic parameters are relatively close with the values found using the rotating disk method. For concentrations greater than 0.94±0.02 of the equilibrium concentration C re f , the dissolution rates show a linear behavior but with greater slope depending on the texture of the mineral. No changes of the dissolution rates were observed on pure gypsum crystals when non soluble solid impurities are added. However, a small degree of uncertainty around the value of C re f show a significant effect on the parameters of the second kinetics.

show abstract

“…Yet, the use of seawater instead of freshwater for this purpose is not straightforward because the high amount of salts and sulfates present in seawater can dramatically alter the reaction paths and rates of both gas capture from point sources and the mineralization of CO 2 injected into the subsurface (e.g., Rosenbauer et al, 2012;Xu et al, 2007). For example, injection of seawater during industrial processes often leads to pipe clogging (e.g., Bader, 2007;Dai et al, 2017), and reactions between seawater and basalts can lead to the formation of permeability-destroying clay minerals in submarine basalt formations (e.g., Wolff-Boenisch and Galeczka, 2018;Wolff-Boenisch et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Mineralization potential of water-dissolved CO2 and H2S injected into basalts as function of temperature: Freshwater versus Seawater

Marieni

Voigt

Clark

et al. 2021

International Journal of Greenhouse Gas Control

View full text Add to dashboard Cite

Solubility Measurements and Predictions of Gypsum, Anhydrite, and Calcite Over Wide Ranges of Temperature, Pressure, and Ionic Strength with Mixed Electrolytes

Cited by 55 publications

References 35 publications

Gypsum Precipitation under Saline Conditions: Thermodynamics, Kinetics, Morphology, and Size Distribution

Gypsum Precipitation under Saline Conditions: Thermodynamics, Kinetics, Morphology, and Size Distribution

The dissolution kinetics of natural gypsum: a case study of Eocene facies in the north-eastern suburbs of Paris

Mineralization potential of water-dissolved CO2 and H2S injected into basalts as function of temperature: Freshwater versus Seawater

Contact Info

Product

Resources

About