Measurement and Modeling of Gas Solubility and Literature Review of the Properties for the Carbon Dioxide−Water System

Abstract

New experimental data on the solubility of CO 2 in water are reported in a wide temperature range (i.e., 274.14 up to 351.31 K). The experimental method is based on measurement of the bubble-point pressure of known water-CO 2 binaries at isothermal conditions using a variablevolume PVT cell. An extensive literature review has been conducted on the mutual solubilities of CO 2 -water systems and CO 2 hydrate-forming conditions. A critical evaluation of the literature data has been conducted to identify any inconsistencies in the reported data. The new experimental data generated in this work are also compared with the literature data, demonstrating the reliability of techniques used in this work. The Valderrama modification of the Patel-Teja equation of state combined with non-density-dependent mixing rules is used to model the fluid phases. The hydrate-forming conditions are modeled by the solid solution theory of van der Waals and Platteeuw with previously reported Kihara potential parameters. The fugacity of ice is calculated by correcting the saturation fugacity of water at the same temperature by using the Poynting correction. The new CO 2 solubility data generated in this work together with the most reliable literature data are used for tuning the binary interaction parameters between subcritical CO 2 and water. The previously reported binary interaction parameters for CO 2 and water are used for the supercritical region. The predicted water content and the hydrate dissociation conditions are compared with the experimental data. The model results are in good agreement with independent experimental data, demonstrating reliability of the techniques and model presented in this work.

Progress in the Study on the Phase Equilibria of the CO2-H2O and CO2-H2O-NaCl Systems

“…However, the calculation of the water content has not been verified at higher temperatures ( 348.15K) and pressures ( 5MPa) because of the limited experimental data. Chapoy et al [7] combined the Valderrama modification of the PT EOS with non-density-dependent mixing rules (NDD) to calculate fugacities in all fluid phases, and the hydrate phase was modeled by the solid solution theory of van der Waals and Platteeuw. The fugacity of water in the empty hydrate lattice was calculated using Kihara potential function to describe the encaged guest-water interaction.…”

“…Spycher et al reviewed the mutual solubilities of CO 2 and H 2 O in the range of 285.15 373.15K and 0 60MPa [3]. Chapoy et al reviewed reliable experimental data for CO 2 solubility in water and water content in the CO 2 -H 2 O system at 273.15 373.15K and 0.07 70.9MPa [7]. This paper reviews more extensive experimental data for CO 2 solubility in water and water content for the CO 2 -H 2 O system in a wider range of temperature and pressure (0 473.15K, 0.07 70.9MPa).…”

Measurement and modeling of the phase behavior of the (carbon dioxide+water) mixture at temperatures from 298.15K to 448.15K

“…Additional data were compiled and tabulated in the 1996 IUPAC Solubility Series [9]. More recently, the phase behavior of (CO 2 + H 2 O) has been reviewed by Spycher et al [2], Diamond and Akinfiev [10] and Chapoy et al [11].…”

“…Spycher et al [2] and Chapoy et al [11] evaluated the available data for both the H 2 O-rich and the CO 2 -rich phases, although few data for the latter were found. Diamond and Akinfiev [10] evaluated CO 2 solubility in water at pressure as high as 100 MPa and developed an empirical model for the solubility of CO 2 in water.…”

PVTxy properties of CO2 mixtures relevant for CO2 capture, transport and storage: Review of available experimental data and theoretical models

“…Based on the different oil industry and fuel conversion processes, the possible impurities are summarized in Table 2. Recently, comprehensive reviews on the experimental PVTxy-data of CO 2 /H 2 O and CO 2 /amines have been published [6][7][8][9][10][11][12]. In addition, an extensive review of the available experimental data and models for CO 2 -hydrates has been presented previously [13].…”