Effect of polyacrylic acid and polyethylene glycol on the crystallization of calcium carbonates in the presence of magnesium ions

Shestak, I. V.; Vorob’ev, P. D.; Cherednichenko, D. V.; Vorob’eva, E. V.; Bondareva, G. V.; Strnadová, Nina

doi:10.1134/s0036023611020288

Cited by 8 publications

(3 citation statements)

References 5 publications

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“…Therefore, final products are in high purity for direct industrial applications. However, the presence of Mg 2+ ions in final product can interfere and slow down the crystallization rate of CaCO 3 by sorption on the crystal forming faces of CaCO 3 .…”

Section: Resultsmentioning

confidence: 99%

“…Several research studies have been reported on the synthesis and properties of PCC nanostructures using various organic additives as stabilizers . However, there are only a few recent studies that have been reported on the synthesis of PCC nanostructures using PEG as a template . Furthermore, to best of our knowledge, no study has been reported on the synthesis of PCC on PEG templates by the carbonation method and the effects of the concentration and pH of PEG, and the temperature of the feed solution on the polymorph, morphology, nucleation and crystal growth of PCC.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of high purity calcium carbonate micro‐ and nano‐structures on polyethylene glycol templates using dolomite

Somarathna

Mantilaka

Karunaratne

et al. 2016

Crystal Research and Technology

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This research paper describes the synthesis of nano-and micro-structures of high purity precipitated calcium carbonate (PCC) on poly(ethylene glycol)(PEG) templates for broadrange industrial applications, using readily available and cheap impure dolomitic marbles. In the method, calcium components of impure dolomitic marbles are extracted as calcium sucrate which is then bubbled with carbon dioxide gas using a carbonation column in the presence of PEG. The effects of concentration of PEG, pH of calcium sucrate solution and temperature on the final yield, morphology and polymorphism of PCC have been studied. Vaterite and calcite are the crystalline forms of calcium carbonate found in final PCC products. The vaterite is observed as hollow spheres with particle diameter of 1.5-2 μm which is formed by aggregation of vaterite nanoparticles with particle size of 20 nm on PEG templates. Optimum conditions for the highest PCC yield of 79.94% are 0.4 mol dm −3 of PEG, pH of 6.5 and temperature of 80°C. The purity of PCC products is about 99%. Therefore, the synthesized PCC products are of required purity and quality for industrial applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of high purity calcium carbonate micro‐ and nano‐structures on polyethylene glycol templates using dolomite

Somarathna

Mantilaka

Karunaratne

et al. 2016

Crystal Research and Technology

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“…Aragonite is formed either by physical effects, e.g., magnetic treatment, or by addition of water soluble organic compounds such as polyacrylic acid and polyethylene glycol 5,6 .…”

Section: Introductionmentioning

confidence: 99%

The Application of Ammonium Hydroxide and Sodium Hydroxide for Reagent Softening of Water

2014

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The calcium carbonate crystallization from aqueous solutions in the presence of alkali additives such as sodium hydroxide and ammonium hydroxide has been researched. It is found CaCO[3] crystallizes predominantly in the modification of aragonite in the presence of ammonium hydroxide. The calcium carbonate formation rate in an alkaline medium and the gaseous reaction products due to sorption of gas bubbles on crystal surfaces, affect the aragonite structure formation. It is shown use of ammonium hydroxide for water treatment can solve two urgent tasks such as water softening and exclusion sediment of deposits on the equipment surfaces by a calcium carbonate crystallization in the form of aragonite

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Environmentally safe oil-field reagents for development and operation of oil-gas deposits

Fakhreeva

Manaure

Докичев

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Effect of polyacrylic acid and polyethylene glycol on the crystallization of calcium carbonates in the presence of magnesium ions

Cited by 8 publications

References 5 publications

Synthesis of high purity calcium carbonate micro‐ and nano‐structures on polyethylene glycol templates using dolomite

Synthesis of high purity calcium carbonate micro‐ and nano‐structures on polyethylene glycol templates using dolomite

The Application of Ammonium Hydroxide and Sodium Hydroxide for Reagent Softening of Water

Environmentally safe oil-field reagents for development and operation of oil-gas deposits

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