A comparison of standard thermodynamic properties and solubility data for baryte, Ba2+(aq) and SO42–(aq)

Zhen-Wu, B.Y.; Dideriksen, Knud; Belova, D. A.; Raahauge, Pernille J.; Stipp, S. L. S.

doi:10.1180/minmag.2014.078.6.17

Cited by 11 publications

(5 citation statements)

References 31 publications

(62 reference statements)

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“…The solubility reaches a maximum value near 373 K. The plotted data include those reported by Lyashchenko and Churagulov who calculated the data using a thermodynamic theory applied to the experimental data of Blount . Similar recalculated data in other references has been well discussed by Krumgalz and Stipp and co-workers . These calculated results are not included here.…”

Section: Resultsmentioning

confidence: 82%

“…31 Similar recalculated data in other references has been well discussed by Krumgalz 16 and Stipp and co-workers. 17 These calculated results are not included here. Data from Strübel are scattered and disagree with the tendency shown by other measurements at the whole examined range.…”

Section: Resultsmentioning

confidence: 99%

“…Additional difficulties can arise due to the limited measurements available to support the calculation results for BaSO 4 . The literature contains several publications reporting on phase equilibrium of systems containing BaSO 4 , discussed by Krumgalz, 16 Stipp and co-workers, 17 and Corrêa et al 18 These existing data are restricted to a narrow range of temperature and pressure. For BaSO 4 solubility in pure water, only 56 of the data points reported exceed temperatures of 373 K and pressures greater than 40 bar.…”

Section: Introductionmentioning

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: 82%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

et al. 2023

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“…However, solubility of baryte at temperatures below 300ºC is very low (Blount, 1977;Zhen-Wu et al, 2014). Mimetite is believed to be the source of As 5+ .…”

Section: Discussionmentioning

confidence: 99%

Oberwolfachite, SrFe³⁺₃(AsO₄)(SO₄)(OH)₆, a new alunite-supergroup mineral from the Clara mine, Schwarzwald, Germany and Monterniers mine, Rhône, France

Чуканов

Möhn

et al. 2021

MinMag

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The new beudantite-group mineral oberwolfachite, ideally SrFe3+3(AsO4)(SO4)(OH)6, was discovered in two localities: Clara mine, Oberwolfach, Schwarzwald, Baden-Württemberg, Germany (holotype) and Monterniers mine, Lantignié, Rhône, Auvergne-Rhône-Alpes, France (cotype). The associated minerals are quartz, baryte, hematite, illite, goethite, beudantite and dussertite (Clara) and arsenogoyazite, jarosite, graulichite-(Ce), goethite and hematite (Monterniers). Oberwolfachite forms yellow to brown platy crystals up to 1 mm across or thick outer zones of mixed (oberwolfachite–beudantite) crystals up to 3 mm across. The lustre is adamantine and the streak is yellow. A distinct cleavage on {0001} is observed. Calculated density is 3.874 g⋅cm–3. The infrared spectra are given. The chemical composition of the holotype/cotype samples are (wt.%, b.d.l. = below detection limit): K2O 1.25/1.86, SrO 6.41/11.15, BaO 8.13/0.45, PbO 2.18/b.d.l., Al2O3 0.16/0.23, Fe2O3 38.99/39.98, La2O3 1.68/not determined, Ce2O3 1.28/2.06, P2O5 0.12/b.d.l., As2O5 17.55/16.55, SO3 12.86/14.99, H2O (calculated) 8.72/9.05, total 99.33/96.62. The empirical formula of the holotype sample is (Sr0.38Ba0.33K0.16Pb0.06La0.06Ce0.05)Σ1.04(Fe3+3.03Al0.02)Σ3.05[(SO4)1.00(AsO4)0.95(PO4)0.01](O6.16H6.00). The crystal structures of both samples were determined using single-crystal X-ray diffraction data and refined to R = 3.13% (holotype, 293 K) and 2.65% (cotype, 170 K). Oberwolfachite is trigonal, R ${\bar 3}$ m, with a = 7.3270(3) Å, c = 17.0931(9) Å and V = 794.70(8) Å3 (holotype), and a = 7.298(2) Å, c = 16.908(3) Å and V = 779.8(4) Å3 (cotype); Z = 3. The strongest lines of the powder X-ray diffraction pattern of holotype [d, Å (I, %)(hkl)] are: 5.95 (56)(101), 3.664 (37)(110), 3.117 (16)(021), 3.082 (100)(113), 2.548 (15)(024), 2.280 (22)(107), 1.983 (26)(303) and 1.832 (19)(220).

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“…A comprehensive summary of the published research on BaSO 4 solubility in our previous work , suggests that further experimental measurements with more ions are needed to develop a fine-tuned Extended UNIQUAC parameter set. The existing data in the CaCl 2 /MgCl 2 aqueous solution − are insufficient to confirm the accuracy of the model. This calls for additional data on higher concentrations than 0.5 m at varying temperatures that would undoubtedly advance understanding and improve the model’s performance in these conditions.…”

Section: Introductionmentioning

confidence: 92%

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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A comparison of standard thermodynamic properties and solubility data for baryte, Ba²⁺_(aq) and SO₄^2–_(aq)

Cited by 11 publications

References 31 publications

Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

Oberwolfachite, SrFe³⁺₃(AsO₄)(SO₄)(OH)₆, a new alunite-supergroup mineral from the Clara mine, Schwarzwald, Germany and Monterniers mine, Rhône, France

Barium Sulfate Solubility in Aqueous Solutions Containing Chlorides or Nitrates

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A comparison of standard thermodynamic properties and solubility data for baryte, Ba2+(aq) and SO42–(aq)

Cited by 11 publications

References 31 publications

Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

Solubility of Barium Sulfate in Water at Elevated Temperatures and Pressures

Oberwolfachite, SrFe3+3(AsO4)(SO4)(OH)6, a new alunite-supergroup mineral from the Clara mine, Schwarzwald, Germany and Monterniers mine, Rhône, France

Barium Sulfate Solubility in Aqueous Solutions Containing Chlorides or Nitrates

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A comparison of standard thermodynamic properties and solubility data for baryte, Ba²⁺_(aq) and SO₄^2–_(aq)

Oberwolfachite, SrFe³⁺₃(AsO₄)(SO₄)(OH)₆, a new alunite-supergroup mineral from the Clara mine, Schwarzwald, Germany and Monterniers mine, Rhône, France