Co-grinding significance for calcium carbonate–calcium ...

Apr 01, 2011  Tadier S, Le Bolay N, Girod Fullana S, Cazalbou S, Charvillat C, Labarrère M, et al. Co-grinding significance for calcium carbonate–calcium phosphate mixed cement. Part II. Effect on cement properties. J Biomed Mater Res Part B: Applied Biomater, submitted for publication.

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Co-grinding significance for calcium carbonate-calcium ...

The grinding with a rotating micromill of monocalcium phosphate monohydrate or anhydrous, dicalcium phosphate dihydrate or anhydrous with calcium oxide, calcium hydroxide, calcium carbonate ...

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Co-grinding significance for calcium carbonate–calcium ...

Co-grinding significance for calcium carbonate–calcium phosphate mixed cement. Part I: effect of particle size and mixing on solid phase reactivity Tadier, Solène and Le Bolay, Nadine and Rey, Christian and Combes, Christèle Co-grinding significance for calcium carbonate–calcium phosphate

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Co-grinding significance for calcium carbonate-calcium ...

Co-grinding significance for calcium carbonate-calcium phosphate mixed cement. Part II: effect on cement properties. Journal of Biomedical Materials Research Part B: Applied Biomaterials, Wiley, 2011, 99B (2), pp.302-312. ￿10.1002/jbm.b.31899￿. ￿hal-01852320￿

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Co-grinding significance for calcium carbonate–calcium ...

Premixed calcium-phosphate cement pastes. (2009). Production, by co-grinding in a media mill, of porous biodegradable polylactic acid–apatite composite materials for bone tissue engineering. (1994). Properties of a mechanically processed polymeric material. Reactivity of calcium phosphate cements.

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(PDF) Control of the Injectability of Calcium Carbonate ...

The purpose of this study was to improve injectability and cohesiveness of original calcium carbonate-calcium phosphate mixed (CaCO3-CaP) self-setting paste for bone filling and repair. With this aim in view dry co-grinding was implemented on the solid phase (vaterite and dicalcium phosphate dihydrate) of

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(PDF) Control of the Injectability of Calcium Carbonate ...

With this aim in view dry co-grinding was implemented on the solid phase (vaterite and dicalcium phosphate dihydrate) of this cement. ... The feasibility of making calcium carbonate-calcium ...

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Comparative Study of Calcium Carbonates and Calcium ...

The aim of this study is to contribute to understanding the mechanisms underlying the formation of biologically relevant minerals by comparing the properties of solid phases formed in calcium phosphate (CaP) or calcium carbonate (CaCO3) precipitation systems, at defined initial experimental conditions: supersaturation, constituent ions ratio, ionic strength, and/or presence of relevant ...

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Co-grinding significance for calcium carbonate-calcium ...

In the present study, we aim to evaluate the contribution of the co-grinding process in controlling calcium carbonate-dicalcium phosphate dihydrate cement properties. We set a method designed to evaluate phase separation, usually occurring during paste extrusion, which is quantitative, reliable, and discriminating and points out the determining role of cogrinding to limit filter-pressing.

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(PDF) Control of the Injectability of Calcium Carbonate ...

The purpose of this study was to improve injectability and cohesiveness of original calcium carbonate-calcium phosphate mixed (CaCO3-CaP) self-setting paste for bone filling and repair. With this aim in view dry co-grinding was implemented on the solid phase (vaterite and dicalcium phosphate dihydrate) of

More

Comparative Study of Calcium Carbonates and Calcium ...

The aim of this study is to contribute to understanding the mechanisms underlying the formation of biologically relevant minerals by comparing the properties of solid phases formed in calcium phosphate (CaP) or calcium carbonate (CaCO 3) precipitation systems, at defined initial experimental conditions: supersaturation, constituent ions ratio, ionic strength, and/or presence of relevant ...

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Calcium Carbonate and Calcium Phosphate Scale Formation ...

In the calcium phosphate formation experiments hydroxyapatite, the thermodynamically most stable phase of calcium phosphate, was formed both in the presence and in the absence of acrylic acid copolymers. Polyacrylic acid at a concentration of 10 ppm was found to be the most effective inhibitor for calcium phosphate with inhibition efficiency of ...

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Precipitation Process of Calcium Phosphate from Calcium ...

calcium carbonate (CaCO3) from the paper, cosmetics, pharmaceuticals, catalyst, ceramics, rubber and paint in-dustries often ends up in landfill (Wen et al., 2007). These CaCO3 wastes can be used as the calcium compound in the synthesis of hydroxyapatite (Ca-HA). Ca-HA, Ca 10(PO4)6(OH 2), is an insoluble calcium phosphate min-eral.

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Determination of calcium salt solubility with changes in ...

The solubility of calcium carbonate was also measured at pH 7.5, 6.0 and 4.5 with two CO(2) environments (0.3 and 152 mmHg) above the solution. The precipitation profile of CaCO(3) was calculated using in-vivo data for bicarbonate and pH from literature and equilibrium calculations. As pH increased, the solubility of each calcium salt increased.

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Periodic Nucleation of Calcium Phosphate in a Stirred ...

known kinetics and the ammonia, carbonate and phosphate equilibria (see supplementary information, section 3). In addition, we included precipitation of calcium phosphate and calcium carbonate.Wenote that it is likely there are multiple calcium phosphate species formed and there are Figure 1. Precipitationofcalcium phosphate in acuvette with high

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COPRECIPITATION OF PHOSPHATE WITH CARBONATES IN A

The rate of calcium carbonate precipi- tation from seawater is reduced by mag- nesium (Pytkowicz 1965) and certain dis- solved organic compounds ( Chave and Suess 1970). However, the effect of dis- solved organics on the coprecipitation of phosphate ion with carbonate

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Effect of pH and Phosphate on Calcium Carbonate Polymorphs ...

The effects of pH and phosphate on the precipitation of calcium carbonate polymorphs from aqueous solution were investigated. Experiments were carried out at near-freezing temperature and two different pH conditions (pH 13.4 and 9.0). At each pH condition, solutions having different concentrations of CaCl2 and NaHCO3 were mixed to achieve Ca/CO3 ratios of 1:1 and 10:1 at different pumping ...

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Study of Carbonated Calcium Phosphate Precipitation on ...

Calcium phosphate biocomposites are candidate materials for bone tissue engineering due to their conductivity and biocompatibility. Calcium phosphate could be grown on collagen by precipitation method in long reaction time. Microwave irradiation is rapid method to assist precipitation by reducing reaction time. In order to study carbonated calcium phosphate precipitation on collagen and ...

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Calcium phosphate mineralization is widely applied in ...

Feb 24, 2016  In light of the present study and previous studies 16,17,25, it seems that phosphate is not merely a co-precipitate of the calcium carbonate system but rather that calcium phosphate is

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Preparation of Calcium Phosphate Cement Utilizing ...

Calcium phosphate cement has been widely used as a bone substitute because of its chemical similarity to natural bone. In this study, calcium phosphate cement was prepared using dicalcium phosphate dihydrate (CaHPO4.2H2O) and calcium carbonate (CaCO3) as starting raw materials. The cement pastes were mixed and the chemistry adjusted with two different aqueous solutions of sodium

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Effect of calcium carbonate on clinical compliance of ...

Jul 31, 2002  Clinical requirements for calcium phosphate bone cements were formulated in terms of the initial setting time, the final setting time, the cohesion time, and the ultimate compressive strength. Two cement formulations were tested. Biocement F was made of a powder containing α‐tertiary calcium phosphate, precipitated hydroxyapatite, and monetite.

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How to Keep Calcium Supplements From Causing Constipation ...

Jul 01, 2019  Calcium is one of several essential minerals that you need to consume on a daily basis. This nutrient is best known for being important to bone health, because 99 percent of the body's calcium is stored in the bones. However, calcium plays a variety of other roles in human health, supporting vascular health, muscle function, nerve conduction, the release of hormones and cellular

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Calcium phosphate mineralization is widely applied in ...

Feb 24, 2016  In light of the present study and previous studies 16,17,25, it seems that phosphate is not merely a co-precipitate of the calcium carbonate system but rather that calcium phosphate is

More

How similar are amorphous calcium carbonate and calcium ...

Amorphous calcium carbonate (ACC) and calcium phosphate (ACP) increasingly attract attention as initial solid phases in vertebrate and invertebrate hard tissue formation, as well as in materials science as a possible new synthetic route for advanced materials preparation. Although much is known about these t

More

Periodic Nucleation of Calcium Phosphate in a Stirred ...

known kinetics and the ammonia, carbonate and phosphate equilibria (see supplementary information, section 3). In addition, we included precipitation of calcium phosphate and calcium carbonate.Wenote that it is likely there are multiple calcium phosphate species formed and there are Figure 1. Precipitationofcalcium phosphate in acuvette with high

More

Preparation of Calcium Phosphate Cement Utilizing ...

Calcium phosphate cement has been widely used as a bone substitute because of its chemical similarity to natural bone. In this study, calcium phosphate cement was prepared using dicalcium phosphate dihydrate (CaHPO4.2H2O) and calcium carbonate (CaCO3) as starting raw materials. The cement pastes were mixed and the chemistry adjusted with two different aqueous solutions of sodium

More

COPRECIPITATION OF PHOSPHATE WITH CARBONATES IN A

The rate of calcium carbonate precipi- tation from seawater is reduced by mag- nesium (Pytkowicz 1965) and certain dis- solved organic compounds ( Chave and Suess 1970). However, the effect of dis- solved organics on the coprecipitation of phosphate ion with carbonate

More

Effect of calcium carbonate on clinical compliance of ...

Jul 31, 2002  Clinical requirements for calcium phosphate bone cements were formulated in terms of the initial setting time, the final setting time, the cohesion time, and the ultimate compressive strength. Two cement formulations were tested. Biocement F was made of a powder containing α‐tertiary calcium phosphate, precipitated hydroxyapatite, and monetite.

More

Synthesis and Mechanism of Tetracalcium Phosphate from ...

Tetracalcium phosphate (TTCP, Ca 4 (PO 4 ) 2 O) was prepared by the calcination of coprecipitated mixture of nanoscale hydroxyapatite (HA, Ca 10 (PO 4 ) 6 (OH) 2 ) and calcium carbonate crystal (CaCO 3 ), followed by cooling in the air or furnace. The effect of calcination temperature on crystal structure and phase composition of the coprecipitation mixture was characterized by transmission ...

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Calcium carbonate reacts with phosphoric acid to produce ...

Answer to: Calcium carbonate reacts with phosphoric acid to produce calcium phosphate, carbon dioxide, and water. 3 CaCO_3(s) + 2 H_3PO_4(aq)...

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Solved: Calcium carbonate reacts with phosphoric acid to ...

The mass of calcium phosphate is 3.74 g. The molar mass of calcium phosphate is 310.18 g. The molar mass of phosphoric acid is 97.99 g. To calculate the grams of phosphoric acid needed to react and produce 3.74 grams calcium phosphate (), use a stoichiometric calculation.

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How to Keep Calcium Supplements From Causing Constipation ...

Jul 01, 2019  Calcium is one of several essential minerals that you need to consume on a daily basis. This nutrient is best known for being important to bone health, because 99 percent of the body's calcium is stored in the bones. However, calcium plays a variety of other roles in human health, supporting vascular health, muscle function, nerve conduction, the release of hormones and cellular

More

Calcium Carbonate Precipitation for CO 2 Storage and ...

Jul 10, 2017  In conclusion, pH condition affects the formation of polymorphs of calcium carbonate by shifting the equilibrium concentration of coronate species (e.g., HCO 3 −, C O 3 2 −) or changing the Ca−CO 3 binding strength, but other operating factors such as temperature, CO 2 flow rate, presence of acid and bases, and carbonation time also ...

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Calcium carbonate CaCO3 - PubChem

Calcium Carbonate is the carbonic salt of calcium (CaCO3). Calcium carbonate is used therapeutically as a phosphate buffer in hemodialysis, as an antacid in gastric hyperacidity for temporary relief of indigestion and heartburn, and as a calcium supplement for preventing and treating osteoporosis. (NCI04)

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Cogrinding significance for calcium carbonate-calcium ...

Sep 27, 2011  Co-grinding significance for calcium carbonate-calcium phosphate mixed cement. Part I: effect of particle size and mixing on solid phase reactivity. Tadier S, Le Bolay N, Rey C, Combes C. Acta Biomater, 7(4):1817-1826, 13 Dec 2010 Cited by: 3 articles PMID: 21147278

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Characterization of titanium surfaces with calcium and ...

The titanium surfaces containing calcium, phosphate ions and the carbonate apatite were characterized. The effect of surface chemistry on the initial rabbit osteoblast response on these surfaces was investigated. The cell count and alkaline phosphatase (ALP) specific activity assay were used for bio

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Cogrinding significance for calcium carbonate–calcium ...

Jan 01, 2011  Co‐grinding significance for calcium carbonate‐calcium phosphate mixed cement, Part 1: Effect of particle size and mixing on solid phase reactivity Tadier, S; Le Bolay, N; Rey, C; Combes, C Calcium carbonate‐calcium phosphate mixed cement compositions for bone reconstruction

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Cogrinding significance for calcium carbonate-calcium ...

Sep 27, 2011  Co-grinding significance for calcium carbonate-calcium phosphate mixed cement. Part I: effect of particle size and mixing on solid phase reactivity. Tadier S, Le Bolay N, Rey C, Combes C. Acta Biomater, 7(4):1817-1826, 13 Dec 2010 Cited by: 3 articles PMID: 21147278

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How similar are amorphous calcium carbonate and calcium ...

Amorphous calcium carbonate (ACC) and calcium phosphate (ACP) increasingly attract attention as initial solid phases in vertebrate and invertebrate hard tissue formation, as well as in materials science as a possible new synthetic route for advanced materials preparation. Although much is known about these t

More

Periodic Nucleation of Calcium Phosphate in a Stirred ...

known kinetics and the ammonia, carbonate and phosphate equilibria (see supplementary information, section 3). In addition, we included precipitation of calcium phosphate and calcium carbonate.Wenote that it is likely there are multiple calcium phosphate species formed and there are Figure 1. Precipitationofcalcium phosphate in acuvette with high

More

US8568696B2 - Grinding method for the manipulation or ...

US8568696B2 US12/186,940 US18694008A US8568696B2 US 8568696 B2 US8568696 B2 US 8568696B2 US 18694008 A US18694008 A US 18694008A US 8568696 B2 US8568696 B2 US 8568696B2 Authority US United States Prior art keywords hybrid calcium phosphate dental fluoride crystalline Prior art date 2008-08-06 Legal status (The legal status is an assumption and is not a legal

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Calcium carbonate CaCO3 - PubChem

Calcium Carbonate is the carbonic salt of calcium (CaCO3). Calcium carbonate is used therapeutically as a phosphate buffer in hemodialysis, as an antacid in gastric hyperacidity for temporary relief of indigestion and heartburn, and as a calcium supplement for preventing and treating osteoporosis. (NCI04)

More

Calcium carbonate reacts with phosphoric acid to produce ...

Answer to: Calcium carbonate reacts with phosphoric acid to produce calcium phosphate, carbon dioxide, and water. 3 CaCO_3(s) + 2 H_3PO_4(aq)...

More

Synthesis and Mechanism of Tetracalcium Phosphate from ...

Tetracalcium phosphate (TTCP, Ca 4 (PO 4 ) 2 O) was prepared by the calcination of coprecipitated mixture of nanoscale hydroxyapatite (HA, Ca 10 (PO 4 ) 6 (OH) 2 ) and calcium carbonate crystal (CaCO 3 ), followed by cooling in the air or furnace. The effect of calcination temperature on crystal structure and phase composition of the coprecipitation mixture was characterized by transmission ...

More

Calcium Carbonate Precipitation for CO 2 Storage and ...

Jul 10, 2017  In conclusion, pH condition affects the formation of polymorphs of calcium carbonate by shifting the equilibrium concentration of coronate species (e.g., HCO 3 −, C O 3 2 −) or changing the Ca−CO 3 binding strength, but other operating factors such as temperature, CO 2 flow rate, presence of acid and bases, and carbonation time also ...

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Calcium Supplements Tips and Answers

Aug 29, 2020  Calcium carbonate is the more common of the two main types of calcium supplements. You should also eat something when you take it to help your body use it best. You should also eat something when ...

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Variation in crystallinity of hydroxyapatite and the ...

The crystallinity of hydroxyapatite (HAp) and the related calcium phosphates for regenerating hard tissues was controlled by the mechanical grinding (MG) method and subsequent heat treatment. The HAp, carbonate-apatite (CO 3 Ap), fluorapatite (FAp), and α- and β-tricalcium phosphates ( α-TCP and β-TCP, respectively) and tetracalcium diphosphate monoxide (TTCP) were used as initial materials.

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Calcium sulfate - Wikipedia

Calcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO 4 and related hydrates.In the form of γ-anhydrite (the anhydrous form), it is used as a desiccant.One particular hydrate is better known as plaster of Paris, and another occurs naturally as the mineral gypsum.It has many uses in industry. All forms are white solids that are poorly soluble in water.

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CA2284224C - Apparatus and process for the preparation of ...

The invention concerns a process and an apparatus for the preparation of precipitated calcium carbonate. In the process, calcium hydroxide is carbonated using gaseous carbon dioxide, whereby the carbonation is performed in gaseous phase by mixing calcium-hydroxide-containing liquor mist with the carbon dioxide gas in a turbulence having an energy intensity in excess of 1000 kW/m3.

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Calcium Phosphate Bone Cements IntechOpen

Oct 16, 2017  The powder of the original calcium phosphate cement formulation proposed by Brown and Chow consists of an equimolar mixture of TTCP and DCP. The setting reaction of calcium phosphate cements starts with ordered dissolution of the salts in the aqueous system. This supplies Ca 2+ and PO 4 3− ions, which precipitate in the form of HA.

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