Carbonation of Ca-bearing silicates, the case of wollastonite: Experimental investigations and kinetic modeling

Daval, Damien; Martínez, Isabelle; Corvisier, Jérôme; Findling, Nathaniel; Goffé, Bruno; Guyot, F.

doi:10.1016/j.chemgeo.2009.01.022

Cited by 231 publications

(168 citation statements)

References 68 publications

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“…Compared with other CCS technologies, it has the advantage of safely storing CO 2 for a very long, if not infinite, time, by converting CO 2 into a solid phase. Through a reaction between rich calcium and magnesium ions in natural alkaline ores [8][9][10][11][12][13][14][15][16][17][18] and alkaline wastes [19][20][21][22][23], CO 2 could be converted into stable solid carbonates, such as magnesium carbonate and calcium carbonate. Forsterite, with a high CO 2 conversion rate, is the main mineralization material.…”

mentioning

confidence: 99%

Simultaneous mineralization of CO2 and recovery of soluble potassium using earth-abundant potassium feldspar

Xie

Wang

et al. 2012

Chin. Sci. Bull.

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CO 2 capture and storage (CCS) is an important strategy in combatting anthropogenic climate change. However, commercial application of the CCS technique is currently hampered by its high energy expenditure and costs. To overcome this issue, CO 2 capture and utilization (CCU) is a promising CO 2 disposal method. We, for the first time, developed a promising method to mineralize CO 2 using earth-abundant potassium feldspar in order to effectively reduce CO 2 emissions. Our experiments demonstrate that, after adding calcium chloride hexahydrate as an additive, the K-feldspar can be transformed to Ca-silicates at 800C, which can easily mineralize CO 2 to form stable calcium carbonate and recover soluble potassium. The conversion of this process reached 84.7%. With further study, the pretreatment temperature can be reduced to 250C using hydrothermal method by adding the solution of triethanolamine (TEA). The highest conversion can be reached 40.1%. The process of simultaneous mineralization of CO 2 and recovery of soluble potassium can be easily implemented in practice and may provide an economically feasible way to tackle global anthropogenic climate change. CCU, mineralization, potassium feldspar, potassium salts, CCS Citation:Xie H P, Wang Y F, Ju Y, et al. Simultaneous mineralization of CO 2 and recovery of soluble potassium using earth-abundant potassium feldspar. Chin Sci Bull, 2013Bull, , 58: 128132, doi: 10.1007 Carbon dioxide (CO 2 ), produced from the combustion of fossil minerals, is considered to be one of the main factors responsible for global climate change. CO 2 emission reduction has become a significant issue of common concern worldwide. CO 2 capture and storage (CCS) is currently considered one of the most effective techniques for reducing emissions, maintaining the current atmospheric CO 2 concentration, and alleviating greenhouse gas effects [1,2]. While a number of countries or regions have carried out field demonstration projects related to CO 2 geological storage to test CCS, wide application of the CCS is mainly hampered by its high costs. To alleviate the associated costs, appropriate strategy should be focused on carbon capture and utilization (CCU) [3][4][5][6]. By CCU, we mean CO 2 being captured and used as raw material to produce high-value products (or related by-products) thereby reducing CO 2 emissions. In industry, one of method of utilization of CO 2 is transforming CO 2 into organic chemicals or polymers. Another method was regenerate methanol and hydrocarbon from CO 2 and H 2 O which can be used as fuel. These two methods confronted the problem of high material cost, high energy consuming and short lifetime of product. Therefore, many people considered that the CCU method can only transforming small amount of CO 2 , which has little effect on reducing the emission of CO 2 , and the CCU cannot be regarded as the main CO 2 disposal method. CO 2 mineralization is a relatively new technology in the field of CO 2 geological sequestration [7]. Compared with

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confidence: 99%

Simultaneous mineralization of CO2 and recovery of soluble potassium using earth-abundant potassium feldspar

Xie

Wang

et al. 2012

Chin. Sci. Bull.

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“…These divalent cations, in addition to the alkalinity required for CO 2 conversion to carbonate ions can be considered as the main rawmaterials for the mineral CO 2 sequestration process (reaction 2.1). Alkaline silicate minerals such as wollastonite can potentially provide the divalent cation and alkalinity needed for the capture and sequestration of CO 2 at ambient environmental conditions (reaction 2.2) (Daval et al, 2009). There are far more than sufficient alkaline silicate materials available to sequester the equivalent CO 2 of the total known amount of fossil fuels (Graves et al, 2006;Kelemen & Matter, 2008;Lackner et al, 1995).…”

Section: Challenges For Application Of Mineral Co 2 Sequestrationmentioning

confidence: 99%

Mineral CO2 sequestration by environmental biotechnological processes

Salek

Kleerebezem

Jonkers

et al. 2013

Trends in Biotechnology

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“…Despite studies highlighting the mineralogical variation between ISM facilities, 14) the typical reported information is limited to the slag source (e.g., BF, BOF, EAF) and the elemental composition as simple oxides. Work from the silicate rock-based CO 2 mineralization field has shown that the ostensibly similar Mg 2 SiO 4 and CaSiO 3 differ in CO 2 mineralization depth by ~4 orders of magnitude (≤40 nm 16) and ≥ 125 μm, 17) respectively), despite comparable thermodynamic driving forces (ΔG r = − 34.7 kJ/mol and − 39.5 kJ/mol, respectively) and dissolution rates. 18) Though thermodynamics determines the initial surface reactions, the activation energy is structurally-dependent, 19) and the mineralogy determines the PL characteristics which are the primary inhibitory feedback on CO 2 mineralization reactions.…”

Section: Mineralogy and Crystallinitymentioning

confidence: 99%

Effect of Solidification and Cooling Methods on the Efficacy of Slag as a Feedstock for CO<sub>2</sub> Mineralization

Myers

Nakagaki

2018

ISIJ Int.

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Iron and steel making (ISM) slag is often utilized to partially offset CO 2 emissions associated with metal production. Currently, the primary recycling method for slag is as β-Ca 2 SiO 4 utilized in the cement industry, termed ground granulated blast furnace slag (ggbs). However, the cement market is not large enough to exploit the entirety of ISM slag as ggbs, relegating a large quantity of slag to reuse pathways with minor impacts on CO 2 reduction. Recent years have seen an increase in research into mineralizing CO 2 using the Ca and Mg content of ISM slags as a feedstock. Unfortunately, it has not been widely recognized that the solidification and cooling processes of slag dramatically effects its efficacy as a CO 2 mineralizing feedstock via modification of mineralogy, crystallinity, grain size, and micromorphology. This paper clarifies the key properties determining mineralization effectiveness and elucidates how to control these properties during the solidification and cooling process. The effect of solidification and cooling method on net CO 2 reduction is shown to be strongly dependent on solidification and cooling method along with the CO 2 intensity of energy generation.

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Carbonation of Ca-bearing silicates, the case of wollastonite: Experimental investigations and kinetic modeling

Cited by 231 publications

References 68 publications

Simultaneous mineralization of CO2 and recovery of soluble potassium using earth-abundant potassium feldspar

Simultaneous mineralization of CO2 and recovery of soluble potassium using earth-abundant potassium feldspar

Mineral CO2 sequestration by environmental biotechnological processes

Effect of Solidification and Cooling Methods on the Efficacy of Slag as a Feedstock for CO<sub>2</sub> Mineralization

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