Measurements and Modeling of High-Pressure O2 and CO2 Solubility in Brine (H2O + NaCl) between 303 and 373 K and Pressures up to 36 MPa

• DOI: 10.1021/acs.jced.0c00799
• Publication Date: 2020-11-25T20:50:35Z
• Authors: Salaheddine Chabab; Pezhman Ahmadi; Pascal Théveneau; Christophe Coquelet; Antonin Chapoy; Jérôme Corvisier; Patrice Paricaud
• Keywords: Brine

Knowledge of the solubility oxygen in natural water, which is generally saline, important for several scientific and engineering fields. Applications such as geological storage gas (containing O2, e.g., flue gas) or energy (compressed air storage) operate at high pressure. However, to date, there no high-pressure O2 data brine, has led researchers develop models predict this property. To overcome lack data, brine been measured using two different techniques, molalities between 0.5 4 mol/kgw (NaCl), temperatures 303 373 K, pressures up 36 MPa. In order validate experimental methods, measurements CO2 a highly concentrated (6 NaCl) K 39.5 MPa were performed also work. These allowed evaluation existing well-known Geng Duan model recently developed by Zheng Mao (ZM). The e-PR-CPA, Søreide–Whitson, geochemical used our previous work process new data. last three have parameterized on reported literature optimized parameters ZM proposed. reproduce effect temperature, pressure, NaCl concentration with an average absolute deviation less than 5% from