Sequestering CO2 by Mineralization into Useful Nesquehonite-Based Products

Glasser, F. P.; Jauffret, Guillaume; Morrison, Jennie; Gálvez‐Martos, José‐Luis; Patterson, N; Imbabi, M.S.

doi:10.3389/fenrg.2016.00003

Cited by 48 publications

(38 citation statements)

References 30 publications

(31 reference statements)

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“…Chemicals such as NaOH can be added to accelerate and enhance the process even further [7]. Most recent research developments in producing CO 2 uptake cements depart from calcium (and magnesium)-rich materials and relate to 1) accelerated curing of concrete [8][9][10], 2) carbonation of brines [11][12][13], 3) carbonation of hydrated lime [14,15] and 4) carbonation of calcium silicates [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Carbonate-bonded construction materials from alkaline residues

Nielsen¹,

Baciocchi²,

Costa³

et al. 2017

RILEM Tech Lett

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Accelerated carbonation is a rapidly developing technology that is attracting attention as it uses CO 2 as a binder to make construction materials. Originally stemming from geochemical and environmental research into CO 2 sequestration or waste remediation, accelerated carbonation has been developed into a technology that enables to transform alkaline precursors into products that meet technical requirements for use as aggregates or shaped blocks. Alkaline precursors can be manufactured from primary resources or derived from industrial residues: a.o. metallurgical slags, incineration ashes and concrete recycling residues are prone to carbonate under controlled conditions. Moist carbonation of shaped Ca-silicate rich precursors at elevated curing temperature and CO 2 concentration or pressure has delivered the most promising results so far. This letter presents an overview of current accelerated carbonation approaches to make carbonate-bonded construction materials from alkaline residues. The general carbonation mechanism is explained and two application routes are exemplified: i.e. production of lightweight aggregates and compact blocks by accelerated moist carbonation.

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Section: Introductionmentioning

confidence: 99%

Carbonate-bonded construction materials from alkaline residues

Nielsen¹,

Baciocchi²,

Costa³

et al. 2017

RILEM Tech Lett

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“…Hence, the nesquehonite (MgCO 3 .3H 2 O) decomposition can produce dypingite (Mg 5 (CO 3 ) 4 (OH) 2 .5H 2 O) and hydromagnesite (Mg 5 (CO 3 ) 4 (OH) 2 .4H 2 O) [46]. Additionally Glasser et al [8] indicated that the increase of dypingite and hydromagnesite from nesquehonite depends on the quantities of H 2 O and CO 2 in the reaction. Studies related to pH-swing mineral carbonation indicated that dypingite can be produced when initial temperature of carbonation is about 60°C [27].…”

Section: Carbonates Precipitationmentioning

confidence: 99%

CO2 sequestration by pH-swing mineral carbonation based on HCl/NH4OH system using iron-rich lizardite 1T

Ferrufino

Okamoto

Santos

et al. 2018

Journal of CO2 Utilization

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In pH-swing mineral carbonation, several acid/base systems has been investigated. Currently the main acid/base systems employed are HCl/NaOH and NH 4 HSO 4 /NH 4 OH. However, the use of a HCl/NH 4 OH system was not yet elucidated. This study proposes to evaluate the feasibility of a pH-swing mineral carbonation based on HCl/ NH 4 OH system at atmospheric pressure and moderate temperatures using mining waste from asbestos production from Goiás State, Brazil (S-GO) for two conditions (i.e. stoichiometric conditions (T2E) and acid excess (T2)). Results indicated that the Fe 3+ content in S-GO acted as a catalyst, due to FeCl 3 hydrolysis in aqueous solutions. Thus, high Mg and Fe extraction efficiency (95 ± 2%), were achieved in the leaching stage for both conditions. The S 1 solid residue was mainly SiO 2 with 90 ± 1% purity content. In the purification stage 91.7 ± 1.9% of Fe t were removed, however, a loss of Mg of 13.6 ± 2.3% was also detected. On the carbonation stage, high purity hydromagnesite was formed in T2E; this stage had a 85% efficiency, thus, 36.7% of CO 2 was fixed. On T2, excess H 2 O and CO 2 promoted dypingite formation and reduced hydromagnesite formation. After carbonation, the formation of crystals was observed in the NH 4 Cl aqueous solution at 25°C, indicating NH 4 Cl supersaturation. The results of mass balance indicate that 4 ton of mineral waste will be employed for each ton of captured CO 2 , as well as 2.6 ton of HCl, and 4.5 ton of NH 4 OH. However, 1.7 ton of SiO 2 , 0.55 ton of iron oxides, and 2.7 ton of hydromagnesite could be produced.

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“…Dypingite-like Mg-carbonates can serve as a flame-retardant or fire-retardant additive for polymers [81][82][83] or simply as backfill [84]. Hydromagnesite is also a promising material to replace CaO in calcium-based cement, which usually has a net release of CO 2 , as opposed to Mg-based cement, which could potentially absorb nearly as much CO 2 during its service life as was emitted during its manufacture (carbon-neutral) [85].…”

Section: Implications For Industrial Applicationsmentioning

confidence: 99%

CO2 Absorption and Magnesium Carbonate Precipitation in MgCl2–NH3–NH4Cl Solutions: Implications for Carbon Capture and Storage

Zhu

Wang

et al. 2017

Minerals

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CO 2 absorption and carbonate precipitation are the two core processes controlling the reaction rate and path of CO 2 mineral sequestration. Whereas previous studies have focused on testing reactive crystallization and precipitation kinetics, much less attention has been paid to absorption, the key process determining the removal efficiency of CO 2 . In this study, adopting a novel wetted wall column reactor, we systematically explore the rates and mechanisms of carbon transformation from CO 2 gas to carbonates in MgCl 2 -NH 3 -NH 4 Cl solutions. We find that reactive diffusion in liquid film of the wetted wall column is the rate-limiting step of CO 2 absorption when proceeding chiefly through interactions between CO 2 (aq) and NH 3 (aq). We further quantified the reaction kinetic constant of the CO 2 -NH 3 reaction. Our results indicate that higher initial concentration of NH 4 Cl (≥ 2 mol·L −1 ) leads to the precipitation of roguinite, while nesquehonite appears to be the dominant Mg-carbonate without NH 4 Cl addition. We also noticed dypingite formation via phase transformation in hot water. This study provides new insight into the reaction kinetics of CO 2 mineral carbonation that indicates the potential of this technique for future application to industrial-scale CO 2 sequestration.

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Sequestering CO2 by Mineralization into Useful Nesquehonite-Based Products

Cited by 48 publications

References 30 publications

Carbonate-bonded construction materials from alkaline residues

Carbonate-bonded construction materials from alkaline residues

CO2 sequestration by pH-swing mineral carbonation based on HCl/NH4OH system using iron-rich lizardite 1T

CO2 Absorption and Magnesium Carbonate Precipitation in MgCl2–NH3–NH4Cl Solutions: Implications for Carbon Capture and Storage

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