CO2 solubility in aqueous solutions containing Na+, Ca2+, Cl−, SO42− and HCO3-: The effects of electrostricted water and ion hydration thermodynamics

Gilbert, Kimberly; Bennett, Philip C.; Wolfe, William W.; Zhang, Tongwei; Romanak, Katherine

doi:10.1016/j.apgeochem.2016.02.002

Cited by 60 publications

(37 citation statements)

References 51 publications

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“…The theoretical details of this approach are explained in Grenthe's wor (Grenthe & Puigdomenech 1997 [53]). The fundamental equation of the SIT model is given by: (10) where the first Debye-Hückel parameter (function of the temperature), the ionic strength of the solution, the charge of the aqueous species i, and binary interaction parameters between aqueous species i and j.…”

Section:  Pure Watermentioning

confidence: 99%

“…At high pressure, the phase equilibria of the CO 2 -H 2 O-NaCl system is less studied. As a result, recently many studies [7][8][9][10][11][12] have been conducted to address the lack of data on this system. In the same way, an experimental apparatus has been developed in this work for the measurement of the solubility of CO 2 in an aqueous solution of sodium chloride, as well as a modeling study for this system was carried out.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic study of the CO2 – H2O – NaCl system: Measurements of CO2 solubility and modeling of phase equilibria using Soreide and Whitson, electrolyte CPA and SIT models

Chabab

Théveneau

Corvisier

et al. 2019

International Journal of Greenhouse Gas Control

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Section:  Pure Watermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermodynamic study of the CO2 – H2O – NaCl system: Measurements of CO2 solubility and modeling of phase equilibria using Soreide and Whitson, electrolyte CPA and SIT models

Chabab

Théveneau

Corvisier

et al. 2019

International Journal of Greenhouse Gas Control

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“…In SC‐CO 2 , carbon dioxide is dissolved in water, promoting the production of carbonic acid. Because the catholyte contains formate ions, which transport hydrogen ions to the double bonds of unsaturated fatty acids, the hydrogen ions and hydrogen carbonate ions ionized by the carbonic acid promote the regeneration of formate ion (Gilbert, Bennett, Wolfe, & Zhang, ). The reaction is described by Equations (5) and (6):…”

Section: Methodsmentioning

confidence: 99%

Electrochemical hydrogenation of soybean oil by filling H ₂ in supercritical CO ₂

Wang

Geng

et al. 2019

J Food Process Preserv

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Electrochemical hydrogenation under a mixed gas environment of CO2 and H2 was studied. It was found that in supercritical CO2 (SC‐CO2), the mole fraction of H2 in both the CO2 and electrolytes increased as H2 pressure increased. CO2 was dissolved in the electrolyte to form unstable carbonic acid, which was easily decomposed into HCO3- and H+. Meanwhile, H2 was electrolyzed to form H+ at the anode, so that the conductivity increased, the hydrogen consumption of the reaction increased, and then tended to be stable at a total pressure of 9.0 MPa. Herein, the electrochemical hydrogenation of soybean oil was accomplished at a current of 120 mA, a temperature of 50°C, and an agitation speed of 300 rpm. The iodine value (IV) of the hydrogenated soybean oil was 90.6 g I2/100 g oil at 7 hr and the trans fatty acid (TFA) content in the oil was 3.32%. Practical applications In the present study, H2 was added to the electrochemical hydrogenation reactor and soybean oil was electrochemically hydrogenated by filling H2 in supercritical CO2. By filling H2, the TFAs of the hydrogenated soybean oil were reduced, and the TFA content was only 3.32%. The reaction rate of the hydrogenation was faster and the hydrogenation time decreased by 5 hr compared with the hydrogenation of soybean oil at a normal pressure. Moreover, the electrochemical hydrogenation reactor used a moderate pressure and a large reaction volume, which is beneficial to industrialization. The electrochemical hydrogenation by filling H2 in SC‐CO2 decreased the hydrogenation time and reduced the industrial production costs. This method can be further applied for industrial purposes.

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“…But the influence on them is different. The dissolution of minerals increases with the increasing temperature 53 while the dissolution of CO 2 gas decreases 54 . In order to address the conflicts between them, high CO 2…”

Section: Ex-situ Direct MCmentioning

confidence: 99%

The technology of CO₂ sequestration by mineral carbonation: current status and future prospects

Wang

Dreisinger

Jarvis³

et al. 2017

Canadian Metallurgical Quarterly

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This paper has been submitted for publication in the Canadian Metallurgical Quarterly (CMQ) journal. The technology of CO 2 sequestration by mineral carbonation: Current status and future prospects Abstract Mineral carbonation (MC) has been extensively researched all over the world since it was found as a natural exothermic process to permanently and safely sequester CO 2. In order to accelerate the natural process, various methods for carbonation of Mg-/Casilicate minerals and other industrial wastes have been studied. It has been found that the MC efficiency will increase with an increase of CO 2 pressure, retention time, temperature, mass ratio of Mg or Ca to Si in minerals, specific surface area, and the slurry concentration in a specific range, and with the introduction of effective catalysts, for example, 1M NaCl and 0.64M NaHCO 3 or carbonic anhydrase. However, there still is not a successful industrial application because of high economic cost and slow reaction rate. It is not economic to exploit Mg-and Ca-silicate minerals deposits or tailings to sequester CO 2 by MC, due to the cost of grinding and heat pre-treatment and in some cases the whole sequestration process may result in more CO 2 emissions than the amount of CO 2 sequestered due to the requirements of energy inputs. The process however, may be profitable as a whole (with carbon credits). It is suggested to combine MC with recovery of valuable metals from ore deposits in order to reduce the cost for MC by cost sharing for mineral recovery.

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CO2 solubility in aqueous solutions containing Na+, Ca2+, Cl−, SO42− and HCO3-: The effects of electrostricted water and ion hydration thermodynamics

Cited by 60 publications

References 51 publications

Thermodynamic study of the CO2 – H2O – NaCl system: Measurements of CO2 solubility and modeling of phase equilibria using Soreide and Whitson, electrolyte CPA and SIT models

Thermodynamic study of the CO2 – H2O – NaCl system: Measurements of CO2 solubility and modeling of phase equilibria using Soreide and Whitson, electrolyte CPA and SIT models

Electrochemical hydrogenation of soybean oil by filling H ₂ in supercritical CO ₂

The technology of CO₂ sequestration by mineral carbonation: current status and future prospects

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CO2 solubility in aqueous solutions containing Na+, Ca2+, Cl−, SO42− and HCO3-: The effects of electrostricted water and ion hydration thermodynamics

Cited by 60 publications

References 51 publications

Thermodynamic study of the CO2 – H2O – NaCl system: Measurements of CO2 solubility and modeling of phase equilibria using Soreide and Whitson, electrolyte CPA and SIT models

Thermodynamic study of the CO2 – H2O – NaCl system: Measurements of CO2 solubility and modeling of phase equilibria using Soreide and Whitson, electrolyte CPA and SIT models

Electrochemical hydrogenation of soybean oil by filling H 2 in supercritical CO 2

The technology of CO2 sequestration by mineral carbonation: current status and future prospects

Contact Info

Product

Resources

About

Electrochemical hydrogenation of soybean oil by filling H ₂ in supercritical CO ₂

The technology of CO₂ sequestration by mineral carbonation: current status and future prospects