Corrigendum to “Dissociation constants and speciation in aqueous Li2SO4 and K2SO4 from measurements of electrical conductance to 673 K and 29 MPa” [Geochim. Cosmochim. Acta 70 (2006) 5169–5182]

Sharygin, Andrei V.; Grafton, Brian K.; Xiao, Caibin; Wood, Robert H.; Balashov, Victor N.

doi:10.1016/j.gca.2017.01.039

Cited by 4 publications

(21 citation statements)

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“…This is arguably the reason that all the above mentioned SAFT-like equations of state, which used DH theory or MSA, behave somewhat similar for the modeling of CO 2 solubility in electrolyte solutions. The MSA theory has been extensively used to study aqueous electrolyte solutions and model the CO 2 sequestration process in brines (Friedman and Dale, 1977;Balashov et al, 2013;Hnedkovsky, L., 2005;Sharygin, 2006).…”

Section: Introductionmentioning

confidence: 99%

Modeling of CO2 solubility in single and mixed electrolyte solutions using statistical associating fluid theory

Jiang

Panagiotopoulos

Economou

2016

Geochimica et Cosmochimica Acta

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Statistical associating fluid theory (SAFT) is used to model CO 2 solubilities in single and mixed electrolyte solutions. The proposed SAFT model implements an improved mean spherical approximation in the primitive model to represent the electrostatic interactions between ions, using a parameter K to correct the excess energies ("KMSA" for short). With the KMSA formalism, the proposed model is able to describe accurately mean ionic activity coefficients and liquid densities of electrolyte solutions including Na + , K + , Ca 2+ , Mg 2+ , Cl -, Br -and SO 4 2-from 298.15 K to 473.15 K using mostly temperature independent parameters, with sole exception being the volume of anions.CO 2 is modeled as a non-associating molecule, and temperature-dependent CO 2 -H 2 O and CO 2 -Ion cross interactions are used to obtain CO 2 solubilities in H 2 O and in single ion electrolyte solutions. Without any additional fitting parameters, CO 2 solubilities in mixed electrolyte solutions and synthetic brines are predicted, in good agreement with experimental measurements.

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Section: Introductionmentioning

confidence: 99%

Modeling of CO2 solubility in single and mixed electrolyte solutions using statistical associating fluid theory

Jiang

Panagiotopoulos

Economou

2016

Geochimica et Cosmochimica Acta

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“…In works of Hnedkovsky et al [14] and Sharygin et al [15] two equations were proposed for an accurate representation the NaCl limiting equivalent conductance . One for the temperature range 290 -520 K and the water density 800 -1000 kg m -3 with AAD of 0.25%, and another for 520 -700 K and 200 -800 kg m -3 or at 700 -800 K and 500 -800 kg m -3 with AAD of 0.35%.…”

Section: Homentioning

confidence: 99%

“…It can be stated that Equation (6) has too many parameters which causes parameter precision problem. Unfortunately, the published coefficients of Equation (6) in [14,15] were rounded in an unacceptable degree for 0…”

Section: Naclmentioning

confidence: 99%

Electrical conductances of aqueous electrolytes at high temperatures: Limiting mobilities of several ions including the proton and HCl dissociation constant

Balashov

Hnědkovský

Wood

2017

Journal of Molecular Liquids

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The empirical equation of R.H.Wood for limiting equivalent NaCl conductance and a set of equations for a proton and other ions in the aqueous solutions HCl, LiCl, NaCl, KCl, Li 2 SO4, K 2 SO4 and mixtures H 2 SO4-Na 2 SO4-H 2 O are revisited and compared with equations of other authors. The Wood equation is unique in an accurate description of the region close to the critical point of water. In this region the decrease in limiting ion mobilities correlate with the increase in water compressibility. In a remarkable way this effect corresponds to the decisive drop in the limiting proton mobility making it similar to the other univalent ions mobilities. Probably, in this water region the critical decrease in the number of hydrogen bonds per water molecule takes place and finally impeding the jump mechanism of proton mobility. The new high temperature data on electrical conductance of aqueous HCl are represented for molalities 10-5-10-3 mol kg-1 at temperatures 298-673 K and pressures up to 28 MPa. The HCl conductivities have been fitted to the Turq, Blum, Bernard and Kunz equation using Wood mixing rule and mean spherical approximation activity coefficients. At 573-663 K the adjustable parameters are the proton limiting equivalent conductance and the HCl dissociation constant. At the measured state point of lowest water density (228.8 kg m-3 ; 673 K) the additional account of ion triplets gives good fit to the data.

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“…The viscosity is derived also from published values (Sengers and Watson, 1986), as is the ionization constant (Johnson et al, 1992). Holland and Powell (1992) model #1 e Calculated by Chermak and Rimstidt (1990a) algorithm f Duan and Sun (2003) g Pokrovskii and Helgeson (1995) h Gibbs apparent free energy Hnedkovsky et al (2005) i Gibbs apparent free energy Sharygin et al (2006) j Smectite for the baseline sandstone…”

Section: Mineralogy Thermodynamics and Kineticsmentioning

confidence: 99%

“…The MSA expressions (Blum and Høye, 1977) for the electrostatic and hard sphere parts were previously discussed (Sharygin et al, 2002). The practice of MSA for electrolyte solutions (Sharygin et al, 2002(Sharygin et al, , 2006Hnedkovsky et al, 2005) showed that a good choice for the hard sphere ionic radii is to use the crystallographic radii (Marcus, 1985) in the equations so that there are no adjustable parameters. The radii of ion complexes and associates m n A B were calculated (Table 3) as…”

Section: Mineralogy Thermodynamics and Kineticsmentioning

confidence: 99%

Predictive Modeling of CO<sub>2</sub> Sequestration and Storage in Deep Saline Sandstone Reservoirs: Sensitivity Analysis of Mineral Rates in Reactive Transport

Balashov

Brantley

Guthrie

et al. 2017

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Corrigendum to “Dissociation constants and speciation in aqueous Li2SO4 and K2SO4 from measurements of electrical conductance to 673 K and 29 MPa” [Geochim. Cosmochim. Acta 70 (2006) 5169–5182]

Cited by 4 publications

References 0 publications

Modeling of CO2 solubility in single and mixed electrolyte solutions using statistical associating fluid theory

Modeling of CO2 solubility in single and mixed electrolyte solutions using statistical associating fluid theory

Electrical conductances of aqueous electrolytes at high temperatures: Limiting mobilities of several ions including the proton and HCl dissociation constant

Predictive Modeling of CO<sub>2</sub> Sequestration and Storage in Deep Saline Sandstone Reservoirs: Sensitivity Analysis of Mineral Rates in Reactive Transport

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