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Table 7

Thermodynamic conditions considered for the Lobodice and Diadema formations and calculated water molar fractions in the vapor phase and H2 concentrations in the aqueous phase.

Geological formation Temperature (°C) Pressure (bar) NaCl concentration (mol/kgH2O) Water molar fraction in gas (–) H2 concentration in solution (mol/kgH2O)
Lobodice 34 90 0.6 5.6 × 10−4 0.056
Diadema 50 10 0.6 1.171 × 10−2 0.006

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