Mechanisms and rates of plagioclase carbonation reactions

Munz, I. A.; Brandvoll, Øyvind; Haug, T.A.; Iden, K.; Smeets, Richard; Kihle, J.; Johansen, H.

doi:10.1016/j.gca.2011.10.036

Cited by 54 publications

(24 citation statements)

References 55 publications

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“…The dependence of the olivine dissolution rate on factors such as pH, CO 2 pressure, salinity, and grain size has been explored through experiments in a high pressure flow reactor operated from 90-150°C and modeling [182,183,214]. In these experiments, the magnesium and silica reactor outlet concentrations were measured in situ with an ion chromatograph and a spectrophotometer.…”

Section: Flow Reactormentioning

confidence: 99%

Mineralization of Carbon Dioxide: A Literature Review

et al. 2015

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Research on carbon capture and storage has been focused on CO 2 storage in geologic formations, with many potential risks. An alternative to conventional geologic storage is carbon mineralization, where CO 2 is reacted with metal cations to form carbonate minerals. Mineralization methods can be broadly divided into two categories: in situ and ex situ. In situ mineralization, or mineral trapping, is a component of underground geologic sequestration, in which a portion of the injected CO 2 reacts with alkaline rock present in the target formation to form solid carbonate species. In ex situ mineralization, the carbonation reaction occurs above ground, within a separate reactor or industrial process. This literature review is meant to provide an update on the current status of research on CO 2 mineralization.

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Section: Flow Reactormentioning

confidence: 99%

Mineralization of Carbon Dioxide: A Literature Review

et al. 2015

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“…Generally, anorthosite is a rock containing more than 90% of feldspar plagioclase minerals. These minerals are the most abundant in the earth's crust (Munz et al, 2012). Feldspar plagioclase is considered a solid solution due to its variable composition between two pure poles: anorthite (calcic pole: CaAl 2 Si 2 O 8 ) and albite (sodic pole: NaAlSi 3 O 8 ).…”

Section: Introductionmentioning

confidence: 99%

“…A general carbonation reaction of the anorthite can be formulated as follows (Hangx and Spiers, 2009;Munz et al, 2012;Oelkers et al, 2008): CaAl 2 Si 2 O 8ðsÞ þ CO 2ðgÞ þ 2H 2 O ðlÞ 4CaCO 3ðsÞ þ Al 2 Si 2 O 5 ðOHÞ 4ðsÞ (8) This reaction occurs during natural weathering and diagenetic processes (Brady and Carroll, 1994;Hangx and Spiers, 2009). It involves plagioclase dissolution coupled with the precipitation of secondary minerals (Munz et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

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CO2 sequestration using waste concrete and anorthosite tailings by direct mineral carbonation in gas–solid–liquid and gas–solid routes

Ghacham

Cecchi

Pasquier

et al. 2015

Journal of Environmental Management

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“…Hangx and Spiers (2009) conducted the carbonation of natural plagioclase feldspars at 200-300°C and CO 2 pressures of 0.4-15 MPa; however, there was little or no carbonate detected even after 7-21 days. Munz et al (2012) studied aqueous carbonation of natural anorthite-rich plagioclase in a flow-through column at 100-250°C and CO 2 pressures of 2-12 MPa. About 11-30 % of the plagioclase was dissolved within 72-168 h.…”

Section: Introductionmentioning

confidence: 99%

Aqueous carbonation of the potassium-depleted residue from potassium feldspar–CaCl2 calcination for CO2 fixation

Sheng

Liang

et al. 2015

Environ Earth Sci

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Based on the academic thought of carbon capture and utilization, a novel process to integrate the potassium extraction from the insoluble potassium feldspar, industrial waste utilization, and the subsequent CO 2 fixation using the resultant potassium-depleted residue was proposed in our previous studies. The potassium-depleted residue comprises several Ca-bearing phases, namely wollastonite (CaSiO 3 ), pseudowollastonite (Ca 3 Si 3 O 9 ), Clmayenite (Ca 12 Al 14 O 32 Cl 2 ), and anorthite (CaAl 2 Si 2 O 8 ), which are potential materials for fixation of CO 2 via carbonation. In this study, carbonation of the residue was examined with focuses on the effects of reaction temperature, initial CO 2 pressure, particle size of the residue, and reaction duration on the carbonation of these Cabearing phases. The results demonstrated that both the temperature and CO 2 pressure significantly affect the carbonation, while the residue particle size has only minor influence. At 1 MPa CO 2 pressure, the carbonation of these components was dominant at different reaction temperatures. Almost complete carbonation of the pseudowollastonite could be achieved at 75°C, while significant carbonation of the wollastonite takes place above 100°C. However, the Cl-mayenite and anorthite are incapable of carbonation even at 200°C. Increasing the CO 2 pressure to 4 MPa can lead to a distinct carbonation of the Cl-mayenite at 150°C but the anorthite remains untouched. At 1.5 MPa CO 2 pressure and 150°C, with the increasing reaction time, the following Ca-bearing species were successively carbonated: first the pseudowollastonite in 5 min after the reaction started, the wollastonite in 5-15 min, and then simultaneously the wollastonite and the pseudowollastonite in 15-45 min, while the carbonation of Cl-mayenite do not begin even after 120 min. A priority sequence of carbonation of these Ca-bearing minerals was determined as follows: pseudowollastonite [ wollastonite [ Cl-mayenite [ anorthite. The trend is in agreement with the results of thermodynamic calculation. Compared to the carbonation of natural wollastonite, the synthesized wollastonite contained in the potassium-depleted residue seems to be more active in carbonation.

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Mechanisms and rates of plagioclase carbonation reactions

Cited by 54 publications

References 55 publications

Mineralization of Carbon Dioxide: A Literature Review

Mineralization of Carbon Dioxide: A Literature Review

CO2 sequestration using waste concrete and anorthosite tailings by direct mineral carbonation in gas–solid–liquid and gas–solid routes

Aqueous carbonation of the potassium-depleted residue from potassium feldspar–CaCl2 calcination for CO2 fixation

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