The Solubility of Carbon Dioxide and Nitrous Oxide in Aqueous Salt Solutions

Markham, Aaron E.; Kobe, Kenneth A.

doi:10.1021/ja01847a027

Cited by 163 publications

(88 citation statements)

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“…The change of the salting-out constant with temperature is 0.002 n7-' deg-' at 25 "C for this work compared with approximately 0.001 from earlier work with nitrous oxide (9, 10) and the inert gases (6). The value of dk/dT falls as temperature is increased, as shown previously (9).…”

Section: Discussionsupporting

confidence: 81%

Aqueous Nonelectrolyte Solutions. Part XI. Mercury Solubility in 6.10 molal Sodium Chloride

Glew¹,

Hames²

1972

Can. J. Chem.

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Section: Discussionsupporting

confidence: 81%

Aqueous Nonelectrolyte Solutions. Part XI. Mercury Solubility in 6.10 molal Sodium Chloride

Glew¹,

Hames²

1972

Can. J. Chem.

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“…For many studies, the range of experimental conditions extends beyond the range listed here for the conditions of interest Table 3 Experimental studies used for the parameterization of activity coefficients for saline solutions Cramer (1982) 25-144 8-21 0.5-2 m NaCl Drummond (1981) 20-305 35-206 1-6 m NaCl Malinin and Kurovskaya (1975) 25-100 48 0.36-5.9 m NaCl Malinin and Savelyeva (1972) 20-100 48 0.44-6 m CaCl 2 Takenouchi and Kennedy (1965) 150-300 100-600 1.1-4.3 m NaCl Prutton and Savage (1945) 76-121 15-610 1.1-4 m CaCl 2 Markham and Kobe (1941) 24-40 1 1-4 m NaCl For many studies, the range of experimental conditions extends beyond the range listed here for the conditions of interest a Excluding points above 4 mol% CO 2 in the critical region fall within a narrow scatter of experimental data points, with a root mean square difference (RMSD 1 ) of about 7% (left side of Figs.1 and 2). Note that at 300 • C, the dew point data of Blencoe et al (2001) are well reproduced up to pressures of about 500 bar, above which the model reliability should be questioned as full miscibility is approached (according to Blencoe et al 2001, the critical line at 300 • C occurs at about 567 bar).…”

Section: Model Parameterization and Resultsmentioning

confidence: 99%

A Phase-Partitioning Model for CO2–Brine Mixtures at Elevated Temperatures and Pressures: Application to CO2-Enhanced Geothermal Systems

2009

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Correlations are presented to compute the mutual solubilities of CO 2 and chloride brines at temperatures 12-300 • C, pressures 1-600 bar (0.1-60 MPa), and salinities 0-6 m NaCl. The formulation is computationally efficient and primarily intended for numerical simulations of CO 2 -water flow in carbon sequestration and geothermal studies. The phase-partitioning model relies on experimental data from literature for phase partitioning between CO 2 and NaCl brines, and extends the previously published correlations to higher temperatures. The model relies on activity coefficients for the H 2 O-rich (aqueous) phase and fugacity coefficients for the CO 2 -rich phase. Activity coefficients are treated using a Margules expression for CO 2 in pure water, and a Pitzer expression for salting-out effects. Fugacity coefficients are computed using a modified Redlich-Kwong equation of state and mixing rules that incorporate asymmetric binary interaction parameters. Parameters for the calculation of activity and fugacity coefficients were fitted to published solubility data over the P-T range of interest. In doing so, mutual solubilities and gas-phase volumetric data are typically reproduced within the scatter of the available data. An example of multiphase flow simulation implementing the mutual solubility model is presented for the case of a hypothetical, enhanced geothermal system where CO 2 is used as the heat extraction fluid. In this simulation, dry supercritical CO 2 at 20 • C is injected into a 200 • C hot-water reservoir. Results show that the injected CO 2 displaces the formation water relatively quickly, but that the produced CO 2 contains significant water for long periods of time. The amount of water in the CO 2 could have implications for reactivity with reservoir rocks and engineered materials.

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“…The reader is referred to Ref. 34 for the sources of all the data, but the most reliable data were generally the ones of Sechenov, 40 Markham and Kobe, 41 Onda et al, 42 and Yasunishi and Yoshida. 43 The data were used to estimate values of k Mcc and k Xcc , as well as their temperature dependence, in a single regression.…”

Section: Thermodynamic Datamentioning

confidence: 99%

IUPAC-NIST Solubility Data Series. 95. Alkaline Earth Carbonates in Aqueous Systems. Part 1. Introduction, Be and Mg

Visscher

Vanderdeelen

Königsberger

et al. 2012

Journal of Physical and Chemical Reference Data

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The alkaline earth carbonates are an important class of minerals. This volume compiles and critically evaluates solubility data of the alkaline earth carbonates in water and in simple aqueous electrolyte solutions. Part 1, the present paper, outlines the procedure adopted in this volume in detail, and presents the beryllium and magnesium carbonates. For the minerals magnesite (MgCO 3 ), nesquehonite (MgCO 3 Á3H 2 O), and lansfordite (MgCO 3 Á5H 2 O), a critical evaluation is presented based on curve fits to empirical and=or thermodynamic models. Useful side products of the compilation and evaluation of the data outlined in the introduction are new relationships for the Henry constant of CO 2 with Sechenov parameters, and for various equilibria in the aqueous phase including the dissociation constants of CO 2 (aq) and the stability constant of the ion pair MCO 0 3 ðaqÞ (M ¼ alkaline earth metal). Thermodynamic data of the alkaline earth carbonates consistent with two thermodynamic model variants are proposed. The model variant that describes the Mg 2þ ÀHCO À 3 ion interaction with Pitzer parameters was more consistent with the solubility data and with other thermodynamic data than the model variant that described the interaction with a stability constant.

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The Solubility of Carbon Dioxide and Nitrous Oxide in Aqueous Salt Solutions

Cited by 163 publications

References 0 publications

Aqueous Nonelectrolyte Solutions. Part XI. Mercury Solubility in 6.10 molal Sodium Chloride

Aqueous Nonelectrolyte Solutions. Part XI. Mercury Solubility in 6.10 molal Sodium Chloride

A Phase-Partitioning Model for CO2–Brine Mixtures at Elevated Temperatures and Pressures: Application to CO2-Enhanced Geothermal Systems

IUPAC-NIST Solubility Data Series. 95. Alkaline Earth Carbonates in Aqueous Systems. Part 1. Introduction, Be and Mg

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