Impact of impurities on CO 2 storage in saline aquifers: Modelling of gases solubility in water

Hajiw, Martha; Corvisier, Jérôme; Ahmar, Elise El; Coquelet, Christophe

doi:10.1016/j.ijggc.2017.11.017

Cited by 18 publications

(18 citation statements)

References 107 publications

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“…This may be because of the difference in the solubility and properties of gas in water. The solubility of CO 2 is approximately 26 to 44‐fold higher compared to that of other gases (Hajiw et al., ). CO 2 escaped from the water over time and pH value converged to the pH of the control sample.…”

Section: Resultsmentioning

confidence: 99%

Extraction of Green Tea Phenolics Using Water Bubbled with Gases

Ryu

Kim

Lee

2019

Journal of Food Science

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Water was bubbled with gases including nitrogen (N2), oxygen (O2), hydrogen (H2), carbon dioxide (CO2), and air for 10 min and phenolics from green tea leaves were extracted using the prepared gas‐bubbled water. To retain the gases in water, the extraction conditions were maintained in an air‐tight container at room temperature under magnetic stirring. Radical scavenging ability, total phenolic content, and phenolic profiles of the extracts were analyzed, and gas‐bubbled water was examined to explain the differences in phenolic contents. Overall, green tea infusion prepared from H2‐bubbled water contained significantly high levels of total phenolic compounds and antioxidant activity compared to other gas‐bubbled waters including N2, O2, CO2, and air (P < 0.05).Control samples and those bubbled with CO2 showed the lowest antioxidant activities in green tea infusion. However, green tea extracts with O2 bubbling showed the lowest catechin content. Green tea leaves treated with hydrogen gas‐bubbled water had much greater damage to their surface morphological properties compared to the other groups, which may explain the higher yield of phenolic compounds. Overall, hydrogen gas‐bubbled water showed better extraction yield of phenolics from green tea leaves than other gas‐bubbled water. Practical Application Green tea or green tea infusion has diverse health beneficial functionality due to the presence of phenolic compounds. In this study, different gases including nitrogen, oxygen, hydrogen, and carbon dioxide were treated in water and these gas‐bubbled water were used to extract phenolics from green tea leaves. Among them, hydrogen‐bubbled water extracted the highest phenolic contents from tea leaves and showed the highest in vitro antioxidant ability in green tea infusion compared to other gas‐bubbled water. This new knowledge could help to produce green teas with higher antioxidant activity in beverage industry.

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Section: Resultsmentioning

confidence: 99%

Extraction of Green Tea Phenolics Using Water Bubbled with Gases

Ryu

Kim

Lee

2019

Journal of Food Science

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“…The classic cubic EOS formulation and mixing rule are general, i.e., applicable to every compound. Their ability to accurately represent the CO 2 -H 2 O and CO 2 -H 2 O-NaCl systems was demonstrated (Spycher et al 2003;Spycher and Pruess 2005;Corvisier et al 2014Corvisier et al , 2017Hajiw et al 2018), in addition to other systems that include various compounds and gaseous mixtures. A comparison between experimental data and several other methods yielded good results (Hajiw et al 2018).…”

Section: Equation Of Statementioning

confidence: 99%

“…Henry constants or reference chemical potentials, and their dependence with respect to pressure are also drawn from solubility experimental data (Hajiw et al 2018).…”

Section: Aqueous Activity Correctionmentioning

confidence: 99%

6. Multiphase Multicomponent Reactive Transport and Flow Modeling

Sin¹,

Corvisier²

2019

Reactive Transport in Natural and Engineered Systems

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This chapter is divided into three main parts: (1) governing processes in multiphase multicomponent flow and reactive transport (MMF&RT), (2) mathematical and numerical approaches of MMF&RT modeling, and (3) applications with respect to CO 2 storage. Thereafter, discussion of other applications that illustrate the ability of existing methods to represent general non-ideal multicomponent gaseous systems within a wide range of temperature and pressure conditions, in addition to their possible interactions with water/brine/rock, are presented. GOVERNING PROCESSES The governing processes and present issues of multiphase flow and geochemical modeling are introduced in this section. The definition of wettability is first presented, which is difficult for several systems; followed by the definitions of capillary pressure, residual and capillary trapping, and heterogeneity. In addition, the relative permeability is introduced, which is a characteristic property of multiphase flow. Recently, novel experimental and numerical technologies have provided further insight into different concepts such as residual nonwetting saturation, maximum relative permeability, governing forces, hysteresis, the impact of heterogeneity, and upscaling from pore-and core-scales. The different regimes of gas diffusion are then discussed in conjunction with corresponding modeling methods. Thereafter, basic formulations of multiphase flow are presented, from immiscible to compositional flows.

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“…This creates unfavorable conditions for rock dissolution. CO 2 solubility is also dependent on salinity where the higher the salinity, the lower the CO 2 solubility [54][55][56].…”

Section: Effect Of Confining Pressure On Permeabilitymentioning

confidence: 99%

“…In addition, CO 2 solubility is reduced with salinity. Therefore, acidic strength and rock dissolution are reduced too, which results in lower rock dissolution and permeability with salinity [54,[56][57][58]. In brief, permeability is enhanced by increasing the pressure.…”

Section: Permeability Changes With Pressure Temperature and Salinitymentioning

confidence: 99%

CO2 Storage in Low Permeable Carbonate Reservoirs: Permeability and Interfacial Tension (IFT) Changes During CO2 Injection in an Iranian Carbonate Reservoir

Karaei

Honarvar

Azdarpour

et al. 2019

Period. Polytech. Chem. Eng.

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The lack of fundamental experimental studies on low permeable carbonate reservoirs for CO2 sequestration purposes is essential for further application of CO2 sequestration as a highly-anticipated CO2 mitigation method in deep saline aquifers, specifically those with low permeabilities. The core samples were taken from a carbonate reservoir in Iran and the brine composition was based on that of the same formation. The objective of this study is to investigate permeability alteration during CO2 sequestration in the aquifers of a low permeable Iranian carbonate reservoir. Various parameters have been investigated. The effects of different parameters such as injection pressure, confining pressure, and temperature on permeability alteration of the cores was investigated. Moreover, the interfacial tension (IFT) of CO2/brine was also determined at pressures and temperatures up to 7 MPa and 100 °C, respectively. The experimental results showed CO2 solubility and rock dissolution to be the governing mechanism when CO2 was injected into carbonate cores. The permeability measurements showed that permeability increases by increasing injection pressure and decreases by increasing confining pressure and temperature. The IFT measurement results showed that the IFT decreases significantly when there is an increase in pressure and temperature.

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Impact of impurities on CO 2 storage in saline aquifers: Modelling of gases solubility in water

Cited by 18 publications

References 107 publications

Extraction of Green Tea Phenolics Using Water Bubbled with Gases

Extraction of Green Tea Phenolics Using Water Bubbled with Gases

6. Multiphase Multicomponent Reactive Transport and Flow Modeling

CO2 Storage in Low Permeable Carbonate Reservoirs: Permeability and Interfacial Tension (IFT) Changes During CO2 Injection in an Iranian Carbonate Reservoir

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