Solubility of hydrogen in sodium chloride brine at high pressures

•New synthetic apparatus for gas-solubility measurements.•Detailed model of the experimental method.•Hydrogen solubility measured in water and NaCl brine.•Results correlated with Krichevsky-Kasarnovsky model.•Salting out described by Sechenov coefficient. We report measurements of the solubility of...

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Bibliographic Details
Published in:Fluid phase equilibria 2021-07, Vol.539, p.113025, Article 113025
Main Authors: Torín-Ollarves, Geraldine A., Trusler, J.P. Martin
Format: Article
Language:English
Subjects:
Brine
Geological storage
High pressure
Hydrogen
Sodium chloride
Solubility
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Summary:•New synthetic apparatus for gas-solubility measurements.•Detailed model of the experimental method.•Hydrogen solubility measured in water and NaCl brine.•Results correlated with Krichevsky-Kasarnovsky model.•Salting out described by Sechenov coefficient. We report measurements of the solubility of hydrogen in pure water and in sodium chloride brine of molality 2.5 mol/kg at temperatures between 323.15 K and 423.15 K and at pressures up to about 40 MPa. The estimated expanded relative uncertainty of the hydrogen solubility at given temperature and pressure is 3%, with a coverage factor of 2. The new results, together with data from the literature for hydrogen solubility in water and brine, are used to construct a simple model to predict hydrogen solubility in water and sodium chloride brines as a function of temperature, pressure and salt molality. [Display omitted]
ISSN:0378-3812
1879-0224
DOI:10.1016/j.fluid.2021.113025