Über die Löslichkeitsverhältnisse des Baryumsulfates

Küster, F. W.

doi:10.1002/zaac.18960120149

Cited by 9 publications

(7 citation statements)

References 2 publications

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“…We conducted BaSO 4 solubility measurements in the difficult temperature range from 373.1 to 440.1 K. The respective pressure is given by the 1 bar greater than water saturation pressure, as listed in Table . The results and values calculated with the extended UNIQUAC are depicted in Figure , along with comparisons with the different sets of data in the literature. − ,,− There are 20 sets data for BaSO 4 solubility in pure water available from different authors covering a wide range of temperature. The majority of published measurement data were obtained at 298.1 K. The solubility observed below 373.1 K increases as a function of temperature as reported by authors.…”

Section: Resultsmentioning

confidence: 99%

“…BaSO 4 solubility (in μmol/kg H 2 O) in water at water saturation pressure compared with the extended UNIQUAC model and reference measurements. − ,,− …”

Section: Resultsmentioning

confidence: 99%

“…Relative deviations of the experimental solubility b exp from values b cal calculated with the extended UNIQUAC. Black circle, data determined in this work; gray multiplication sign, data obtained from the literature. − ,,− …”

Section: Resultsmentioning

confidence: 99%

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Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

et al. 2023

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There are few measurements of barium sulfate (BaSO4) solubility in water above 373 K available in the literature. BaSO4 solubility data at water saturation pressure are scare. The pressure dependence on BaSO4 solubility has not previously been comprehensively reported for the pressure range 100–350 bar. In this work, an experimental apparatus was designed and built to measure BaSO4 solubility in aqueous solutions under high-pressure (HP), high-temperature (HT) conditions. The solubility of BaSO4 was experimentally determined in pure water over the temperature range from T = (323.1 to 440.1) K and pressures ranging from p = (1 to 350) bar. Most of the measurements were done at water saturation pressure: six data points were done above the saturation pressure (323.1–373.1 K) and 10 experiments were conducted at water saturation (373.1–440.1 K). The reliability of the extended UNIQUAC model and results generated in this work was demonstrated by comparing with the scrutinized experimental data reported in the literature. The model gives a very good agreement with BaSO4 equilibrium solubility data, demonstrating the reliability of the extended UNIQUAC model. The accuracy of the model at high temperature and saturated pressure due to data insufficiencies is discussed.

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Section: Resultsmentioning

confidence: 99%

“…BaSO 4 solubility (in μmol/kg H 2 O) in water at water saturation pressure compared with the extended UNIQUAC model and reference measurements. − ,,− …”

Section: Resultsmentioning

confidence: 99%

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Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

et al. 2023

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“…First, the BaSO 4 solubility in pure water at atmospheric pressure and in the temperature range between 298.1 and 368.1 K was studied to validate both the apparatus and experimental procedure through a comparison with a large amount of literature data available from different references. ,,− ,− ,− The experimental data determined in this work and calculated BaSO 4 solubility data in pure water are presented in Table and plotted in Figure with the literature data available under the same temperature. The solubility values are denoted by b BaSO 4 and expressed in micromoles of Ba 2+ per kilogram of water.…”

Section: Resultsmentioning

confidence: 99%

“…Barium sulfate solubility in water at the vapor pressure of water compared to the extended UNIQUAC model results and reference measurements. ,,− ,− ,− …”

Section: Resultsmentioning

confidence: 99%

Barium Sulfate Solubility in Aqueous Solutions Containing Chlorides or Nitrates

Shi

Corrêa

Thomsen

et al. 2023

Ind. Eng. Chem. Res.

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Electrolyte fluids produced during operation in geothermal wells and in natural gas or oil reservoirs involve temperature and composition variations. Crystallization fouling (or scaling) on the surface of industrial equipment happens due to these changes in the thermodynamic state. For this purpose, an experimental apparatus was designed and built to measure the solubility of sparingly soluble salts below the boiling point of water at ambient pressure. This work sheds light on the equilibrium properties of aqueous solutions containing barium sulfate (BaSO 4 ) by reporting its 195 measurements of solubility in a wide range of temperatures and ionic strengths at ambient pressure, of which 143 new solubilities were determined. The equilibrium solubility of BaSO 4 was measured and discussed in pure water or in solutions containing chlorides MCl (M = Na, Mg, K, Ca) or nitrates MNO 3 (M = Na, K) at three temperatures (298.1, 323.1 and 368.1 K) at electrolyte molalities of up to 2 mol/kg water. The experimental solubility results of BaSO 4 were compared with those reported in the literature for an electrolyte solution under the same conditions. The extended UNIQUAC model of Thomsen and Rasmussen was used as a reference to the experimental results of BaSO 4 solubility. The experimental results indicated that generally the solubility of BaSO 4 increases as a function of temperature until it reaches a maximum at around 373.1 K. It has been discovered that the addition of another electrolyte to the system can cause BaSO 4 solubility to increase. A few exceptions are observed: KCl and CaCl 2 beyond a certain value at 298.1 and 323.1 K cause BaSO 4 solubility to decrease. Nitrate salts have a higher impact on solubility compared to chloride salts. The effect seems to be related to the anion. The cation has slightly less impact on solubility. The results presented in this work can facilitate better performance of thermodynamic models, further enabling safe operation and cost reduction for future sustainable energy production.

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Über Dichte und Ausdehnung der Schwefelsäure in wässeriger Lösung, ein Beitrag zu ihrem physikalisch‐chemischen Verhalten

Domke¹,

Bein²

1905

Z. Anorg. Chem.

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Über die Löslichkeitsverhältnisse des Baryumsulfates

Cited by 9 publications

References 2 publications

Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

Barium Sulfate Solubility in Aqueous Solutions Containing Chlorides or Nitrates

Über Dichte und Ausdehnung der Schwefelsäure in wässeriger Lösung, ein Beitrag zu ihrem physikalisch‐chemischen Verhalten

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