Journal ArticleDOI
Solubility of CO2 in aqueous solutions of NaCl at (30 to 60) °C and (10 to 20) MPa
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In this article, the solubility of CO2 in NaCl solutions with mass fractions of 0.01 to 0.03 was measured at (30 to 60) °C and (10 to 20) MPa.Abstract:
The solubility of CO2 in NaCl solutions with mass fractions of 0.01 to 0.03 was measured at (30 to 60) °C and (10 to 20) MPa. The CO2 was dissolved in NaCl solution in a pressurized vessel, and a sample of the saturated solution was removed from the vessel. The solubility was then estimated by measuring the mass of the sample and the pressure of the dissolved gas. On the basis of this experimental data, an equation for predicting the CO2 mole fraction x1 in NaCl solution as a function of temperature t = (30 to 60) °C, pressure P = (10 to 20) MPa, and mass fraction, S, of NaCl = (0.01 to 0.03) was determined. H(P,T,S)/MPa = 36.1P/MPa + 3.87T/K − 1097.1 + (196P/MPa + 26.9T/K − 8810)S, where H is Henry's coefficient, H = Pc/x1, Pc is the partial pressure of carbon dioxide, T is the absolute temperature, and S is the mass fraction of NaCl in the aqueous solution.read more
Citations
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An improved model for the calculation of CO2 solubility in aqueous solutions containing Na+, K+, Ca2+, Mg2+, Cl−, and SO42−
TL;DR: In this paper, an improved model was presented for the calculation of the solubility of carbon dioxide in aqueous solutions containing Na +, K +,C a 2+,M g 2+ ),C l �, and SO4 2� with experimental accuracy.
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CO2-H2O mixtures in the geological sequestration of CO2. II. Partitioning in chloride brines at 12–100°C and up to 600 bar
Nicolas Spycher,Karsten Pruess +1 more
TL;DR: In this article, the authors extended the analysis of the mutual solubilities of CO2 and H2O to include the effect of chloride salts in the aqueous phase.
Journal ArticleDOI
CO2 wettability of seal and reservoir rocks and the implications for carbon geo-sequestration
TL;DR: In this paper, the authors reviewed the literature data published on the topic of CO2 wettability of storage and seal rocks and showed that the current contact angle data have a large uncertainty.
Journal Article
CO2-H2O Mixtures in the Geological Sequestration of CO2. II. Partitioning in Chloride Brines at 12-100oC and up to 600 bar
Nicolas Spycher,Karsten Pruess +1 more
TL;DR: In this paper, the authors extended the analysis of the mutual solubilities of CO2 and H2O to include the effect of chloride salts in the aqueous phase.
Journal ArticleDOI
Residual CO2 imaged with X‐ray micro‐tomography
TL;DR: In this article, the authors used micro-tomography (μ-CT) and measured the distribution of trapped cluster size in a sandstone at elevated temperatures and pressures, representative of storage conditions.
References
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Journal ArticleDOI
Thermodynamic Properties of Aqueous Sodium Chloride Solutions
TL;DR: In this article, the authors derived a semi-empirical equation for the thermodynamic properties of NaCl(aq) at constant pressure, which was combined with results contained in the previous paper on the volumetric properties to yield a complete equation of state valid in the region 273 K≤T≤573 K, saturation pressure ≤P≤1 kbar, 0≤m≤6.0 mol kg−1.
Journal ArticleDOI
The Solubility of Carbon Dioxide in Water at Various Temperatures from 12 to 40° and at Pressures to 500 Atmospheres. Critical Phenomena*
R. Wiebe,V. L. Gaddy +1 more
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The mutual solubilities of water with supercritical and liquid carbon dioxides
TL;DR: In this article, the authors presented new data for phase compositions and phase densities at 15, 20, 25, 35, and 40 °C which extend the coverage of the classic work of Wiebe and Gaddy on the CO 2 /H 2 O system in this region.