Precipitation of Spherical Vaterite Particles via Carbonation Route in the Bubble Column and the Gas-Lift Reactor

Konopacka-Łyskawa, Donata; Kościelska, Barbara; Łapiński, Marcin

doi:10.1007/s11837-018-3307-0

Cited by 11 publications

(2 citation statements)

References 48 publications

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“…In the carbonation method using gaseous CO 2 , mixing is generated by a gas flow. Therefore, an increase in the gas flow rate resulted in an increase in the vaterite precipitation [19,59,78,79].…”

Section: Mixingmentioning

confidence: 99%

Synthesis Methods and Favorable Conditions for Spherical Vaterite Precipitation: A Review

Konopacka-Łyskawa

2019

Crystals

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103

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Vaterite is the least thermodynamically stable anhydrous calcium carbonate polymorph. Its existence is very rare in nature, e.g., in some rock formations or as a component of biominerals produced by some fishes, crustaceans, or birds. Synthetic vaterite particles are proposed as carriers of active substances in medicines, additives in cosmetic preparations as well as adsorbents. Also, their utilization as a pump for microfluidic flow is also tested. In particular, vaterite particles produced as polycrystalline spheres have large potential for application. Various methods are proposed to precipitate vaterite particles, including the conventional solution-solution synthesis, gas-liquid method as well as special routes. Precipitation conditions should be carefully selected to obtain a high concentration of vaterite in all these methods. In this review, classical and new methods used for vaterite precipitation are presented. Furthermore, the key parameters affecting the formation of spherical vaterite are discussed.

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Section: Mixingmentioning

confidence: 99%

Synthesis Methods and Favorable Conditions for Spherical Vaterite Precipitation: A Review

Konopacka-Łyskawa

2019

Crystals

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103

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“…Setting appropriate process parameters, such as reagent concentration, temperature or pH, allows researchers to produce vaterite, calcite and aragonite particles [2,14]. Recently, as an alternative method, the carbonation of aqueous solutions of calcium salts in the presence of an absorption promoter, e.g., ammonia or amine, has been proposed [11,15,16]. In contrast to the carbonation of a Ca(OH) 2 suspension, this method can be used to obtain calcium carbonate in the form of vaterite.…”

Section: Introductionmentioning

confidence: 99%

Precipitation and Transformation of Vaterite Calcium Carbonate in the Presence of Some Organic Solvents

et al. 2020

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In this paper, the production of CaCO3 particles via the carbonation route in the reaction of CaCl2 and CO2, using NH3 as a promoter of CO2 absorption, was studied. The solvents used as the reaction media for CaCO3 precipitation were aqueous solutions of methanol, isopropanol and dimethyl sulfoxide (DMSO), in a concentration range of 0–20% (v/v). It was found that the presence of an organic additive influenced the precipitation rate, the content of vaterite in the obtained product, the morphology and the size of the precipitated CaCO3 particles, as well as the rate of its transformation into calcite. The presence of all added organic solvents reduced the vaterite concentration in the produced CaCO3 both at the end of the reaction and after incubation in the reaction medium for 1 h. However, the transformation of vaterite particles into calcite in the tested solutions was slower when the 4 h and 24 h procedures were compared. The interactions of solvents with calcite and vaterite were compared using HPLC tests. DMSO molecules interacted with vaterite particles the most strongly, while the interaction of isopropanol with this polymorph was the weakest. The opposite effect was observed for interactions with calcite particles, and the affinity decreased in the series: isopropanol, methanol, DMSO.

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Preparation of precipitated calcium carbonate using wollastonite and CO2 from industrial exhaust

Zhao¹,

Yu²,

Wang³

et al. 2022

Braz. J. Chem. Eng.

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Precipitation of Spherical Vaterite Particles via Carbonation Route in the Bubble Column and the Gas-Lift Reactor

Cited by 11 publications

References 48 publications

Synthesis Methods and Favorable Conditions for Spherical Vaterite Precipitation: A Review

Synthesis Methods and Favorable Conditions for Spherical Vaterite Precipitation: A Review

Precipitation and Transformation of Vaterite Calcium Carbonate in the Presence of Some Organic Solvents

Preparation of precipitated calcium carbonate using wollastonite and CO2 from industrial exhaust

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