Brucite [Mg(OH2)] carbonation in wet supercritical CO2: An in situ high pressure X-ray diffraction study

Schaef, Herbert T.; Windisch, Charles F.; McGrail, B. Peter; Martin, Paul F.; Rosso, Kevin M.

doi:10.1016/j.gca.2011.09.029

Cited by 112 publications

(127 citation statements)

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“…Recent work shows a dependency between of carbonation of a magnesium silicate mineral (i.e., forsterite) and brucite on water content in CO 2 [7,10,[31][32][33][34][35]. A key finding indicates threshold behavior where higher water content in the CO 2 phase facilitates greater extent of carbonation, which we speculate relates to the thickness of water films and capillary water.…”

Section: Introductionmentioning

confidence: 75%

“…Capillary condensation of water from scCO 2 and coalescence of water films will also occur; however, little is known about water film behavior, or even thickness, in scCO 2 . Moreover, recent studies [7][8][9][10][11] have shown that the development of a water layer controls the chemical reactivity at the scCO 2 -mineral interface, may be critical to mineral dissolution reactions in scCO 2 .…”

Section: Introductionmentioning

confidence: 99%

“…Previous work in the CO 2 storage literature related to the changing magnitude of the chemical potential of water and/or adsorptive and capillary water focuses mainly on: 1) near-wellbore saline water evaporation and concomitant salt precipitation that may reduce scCO 2 injection rates due to permeability losses [16,17,[28][29][30]; 2) chemical reactivity under humid scCO 2 including precipation-dissolution and water intercalation in clays as a function of water content in scCO 2 [7,10,[31][32][33][34][35][36]; and 3) laboratory observation or theoretical estimation of thickness of water films in scCO 2 [26,27,37]. Common approaches for assessing near-wellbore dry-out, in calculating water activity in the CO 2 -rich phase, typically neglect any effects of capillary potential or surface adsorption potential on the total chemical potential of water [e.g., see 36,38].…”

Section: Introductionmentioning

confidence: 99%

“…FTIR is a spectroscopic technique that looks at adsorptive spectra across a range of frequencies [67]. [10,68] and calciumaluminum cements [69].…”

Section: Introductionmentioning

confidence: 99%

“…Hu et al [88] assessed biotite dissolution in CO 2 -saturated brines, and also found that salinity increased dissolution rates for biotite, and found that rates decreased with decreasing hydrated metal cation size. Other studies that have compared anhydrous and hydrous scCO 2 conditions include studies of brucite [10] and granite [8] mineral substrates, both of which also concluded that hydrous scCO 2 is more reactive with mineral substrates than anhydrous scCO 2 . Lin et al [8] identified the plagioclase phase of the granite specimen as the most reactive with hydrous scCO 2 , and report that its dissolution leads to formation of an unknown aluminosilicate secondary phase on the mineral surface.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Bryan¹,

Dewers²,

Heath³

et al. 2013

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In the supercritical CO 2 -water-mineral systems relevant to subsurface CO 2 sequestration, interfacial processes at the supercritical fluid-mineral interface will strongly affect core-and reservoir-scale hydrologic properties. Experimental and theoretical studies have shown that water films will form on mineral surfaces in supercritical CO 2 , but will be thinner than those that form in vadose zone environments at any given matric potential. The theoretical model presented here allows assessment of water saturation as a function of matric potential, a critical step for evaluating relative permeabilities the CO 2 sequestration environment. The experimental water adsorption studies, using Quartz Crystal Microbalance and Fourier Transform Infrared Spectroscopy methods, confirm the major conclusions of the adsorption/condensation model. Additional data provided by the FTIR study is that CO 2 intercalation into clays, if it occurs, does not involve carbonate or bicarbonate formation, or significant restriction of CO 2 mobility.We have shown that the water film that forms in supercritical CO 2 is reactive with common rock-forming minerals, including albite, orthoclase, labradorite, and muscovite. The experimental data indicate that reactivity is a function of water film thickness; at an activity of water of 0.9, the greatest extent of reaction in scCO 2 occurred in areas (step edges, surface pits) where capillary condensation thickened the water films. This suggests that dissolution/precipitation reactions may occur preferentially in small pores and pore throats, where it may have a disproportionately large effect on rock hydrologic properties.Finally, a theoretical model is presented here that describes the formation and movement of CO 2 ganglia in porous media, allowing assessment of the effect of pore size and structural heterogeneity on capillary trapping efficiency. The model results also suggest possible engineering approaches for optimizing trapping capacity and for monitoring ganglion formation in the subsurface. 6 ACKNOWLEDGMENTS

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…FTIR is a spectroscopic technique that looks at adsorptive spectra across a range of frequencies [67]. [10,68] and calciumaluminum cements [69].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Bryan¹,

Dewers²,

Heath³

et al. 2013

View full text Add to dashboard Cite

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Adsorption and capillary condensation in porous media as a function of the chemical potential of water in carbon dioxide

Heath

Bryan

Matteo

et al. 2014

Water Resources Research

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The chemical potential of water may play an important role in adsorption and capillary condensation of water under multiphase conditions at geologic CO 2 storage sites. Injection of large volumes of anhydrous CO 2 will result in changing values of the chemical potential of water in the supercritical CO 2 phase. We hypothesize that the chemical potential will at first reflect the low concentration of dissolved water in the dry CO 2 . As formation water dissolves into and is transported by the CO 2 phase, the chemical potential of water will increase. We present a pore-scale model of the CO 2 -water interface or menisci configuration based on the augmented Young-Laplace equation, which combines adsorption on flat surfaces and capillary condensation in wedge-shaped pores as a function of chemical potential of water. The results suggest that, at a given chemical potential for triangular and square pores, liquid water saturation will be less in the CO 2 -water system under potential CO 2 sequestration conditions relative to the air-water vadose zone system. The difference derives from lower surface tension of the CO 2 -water system and thinner liquid water films, important at pore sizes <1 3 10 26 m, relative to the air-water system. Water movement due to capillary effects will likely be minimal in reservoir rocks, but still may be important in finer grained, clayey caprocks, where very small pores may retain water and draw water back into the system via adsorption and capillary condensation, if dry-out and then rewetting were to occur.

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Microstructural and Structural Characterization of Materials for CO₂Storage Using Multi‐Scale X‐Ray Scattering Methods

Gadikota

Allen

2018

Materials and Processes for CO2 Capture, Conversion, and Sequestration

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Brucite [Mg(OH2)] carbonation in wet supercritical CO2: An in situ high pressure X-ray diffraction study

Cited by 112 publications

References 45 publications

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Adsorption and capillary condensation in porous media as a function of the chemical potential of water in carbon dioxide

Microstructural and Structural Characterization of Materials for CO₂Storage Using Multi‐Scale X‐Ray Scattering Methods

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Brucite [Mg(OH2)] carbonation in wet supercritical CO2: An in situ high pressure X-ray diffraction study

Cited by 112 publications

References 45 publications

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Fundamental study of CO2-H2O-mineral interactions for carbon sequestration, with emphasis on the nature of the supercritical fluid-mineral interface.

Adsorption and capillary condensation in porous media as a function of the chemical potential of water in carbon dioxide

Microstructural and Structural Characterization of Materials for CO2Storage Using Multi‐Scale X‐Ray Scattering Methods

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Product

Resources

About

Microstructural and Structural Characterization of Materials for CO₂Storage Using Multi‐Scale X‐Ray Scattering Methods