The inhibition of calcium carbonate crystal growth by the cysteine-rich Mdm2 peptide

Dalas, E.; Chalias, A.; Gatos, Dimitrios; Barlos, Kleomenis

doi:10.1016/j.jcis.2006.04.003

Cited by 17 publications

(14 citation statements)

References 55 publications

(90 reference statements)

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“…coalescence of initially stabilized nanocrystals that grow together and form one larger particle [15,19]. Several studies have demonstrated that the incorporation and sorption of inorganic/organic impurities inhibit the crystal growth process of calcite [20][21][22][23]. Conversely, the nucleation process may be enhanced, leading to a complex aggregation/agglomeration process of small particles, resulting in clusters of crystallites, as observed in the present study.…”

Section: Introductionsupporting

confidence: 72%

Simulation, aggregation and thermal analysis of nanostructured calcite obtained in a controlled multiphase process

Wszelaka‐Rylik

Piotrowska

Gierycz

2014

J Therm Anal Calorim

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In the present experiments, the carbonation process in multiphase system was carried out using the reactor with rotating discs. Calcite was produced by controlled fast precipitation through gaseous CO 2 adsorption in Ca(OH) 2 slurry. Furthermore, the reaction kinetics' were controlled by disc's revolution speed in the range from 80 rpm through 120 to 160 rpm. Initial concentration of the slurry ranged between 54 and 110 mM L -1 . The aggregates of crystals precipitated in the aqueous solution were of sub-micrometric size. Dynamic light scattering method showed that mean aggregate diameter decreased with the higher mixing rate as long as the mixing condition was homogenous (up to 160 rpm). Thermogravimetric analysis revealed that the surface of calcite was polluted by unwanted, different compounds amount of which depends on the initial concentration of the slurry. Therefore, in order to obtain chemically pure calcite, CaCO 3 powder was heated up in the laboratory oven. In order to explain the mechanism of calcite particles' aggregation, the simulation of the aggregates formation has been performed based on the new model taking into account kinetics of the multiphase reaction, crystal growth and their agglomeration. The obtained data on crystal morphology during the precipitation process have been compared with the model simulation results. The internally consistent model very well describes both the formation and the aggregation of the calcite nanoparticles, and the same can be used and recommended for accurate calculations of the particle and aggregates' sizes as well as their distribution in the reactor.

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Section: Introductionsupporting

confidence: 72%

Simulation, aggregation and thermal analysis of nanostructured calcite obtained in a controlled multiphase process

Wszelaka‐Rylik

Piotrowska

Gierycz

2014

J Therm Anal Calorim

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“…The calculations using Eq. (17) show that the calcium carbonate production rate in the 55 bar-30 1C system (798.6 kg/m 3 h, v 0,p ¼ 15.9 mol/h) is higher than the production rate in the 90 bar-90 1C system (213.17 kg/m 3 h, v 0,p ¼ 4.3 mol/h). This confirms the qualitative observations discussed above.…”

Section: Article In Pressmentioning

confidence: 79%

“…Refs. [4][5][6][7][8][9][10][11][12][13][14][15][16][17]). In general, calcite in a supersaturated solution can be precipitated by nucleation in an early stage and subsequent crystal growth in later stages.…”

Section: Introductionmentioning

confidence: 99%

Calcite precipitation from CO2–H2O–Ca(OH)2 slurry under high pressure of CO2

Montes-Hernandez¹,

Renard²,

Geoffroy³

et al. 2007

Journal of Crystal Growth

113

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The formation of solid calcium carbonate (CaCO 3 ) from aqueous solutions or slurries containing calcium and carbon dioxide (CO 2 ) is a complex process of considerable importance in the ecological, geochemical and biological areas. Moreover, the demand for powdered CaCO 3 has recently increased considerably in various fields of industry. The aim of this study was therefore to synthesize fine particles of calcite with controlled morphology by hydrothermal carbonation of calcium hydroxide at high CO 2 pressure ðinitial P CO 2 ¼ 55 barÞ and at moderate and high temperatures (30 and 90 1C). The morphology of precipitated particles was identified by transmission electron microscopy (TEM/EDS) and scanning electron microscopy (SEM/EDS). In addition, an X-ray diffraction analysis was performed to investigate the carbonation efficiency and purity of the solid product.Carbonation of dispersed calcium hydroxide (Ca(OH) 2(s) +CO 2(aq) -CaCO 3(s) +H 2 O) in the presence of supercritical (P T ¼ 90 bar, T ¼ 90 1C) or gaseous (P T ¼ 55 bar, T ¼ 30 1C) CO 2 led to the precipitation of sub-micrometric isolated particles (o1 mm) and micrometric agglomerates (o5 mm) of calcite. For this study, the carbonation efficiency (Ca(OH) 2 -CaCO 3 conversion) was not significantly affected by pressure-temperature (PT) conditions after 24 h of reaction. In contrast, the initial rate of calcium carbonate precipitation increased from 4.3 mol/h in the ''90 bar-90 1C'' system to 15.9 mol/h in the ''55 bar-30 1C'' system. The use of high CO 2 pressure may therefore be desirable for increasing the production rate of CaCO 3 , carbonation efficiency and purity, to approximately 48 kg/m 3 h, 95% and 96.3%, respectively, in this study. The dissipated heat for this exothermic reaction was estimated by calorimetry to be À32 kJ/mol in the ''90 bar-90 1C'' system and À42 kJ/mol in the ''55 bar-30 1C'' system. r 2007 Published by Elsevier B.V.

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“…In order to compare it to conventional additive, phosphino-polycarboxylic acid (PPCA) was studied too because it is often used in the anti-scale treatment of water [8,9]. The molecular structures of the additives …”

Section: Chemicalsmentioning

confidence: 99%

Experimental investigation of scaling control by a non-phosphorous polymer: polyaspartic acid

Martinod

Neville

Euvrard

2009

Desalination and Water Treatment

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The inhibition of calcium carbonate crystal growth by the cysteine-rich Mdm2 peptide

Cited by 17 publications

References 55 publications

Simulation, aggregation and thermal analysis of nanostructured calcite obtained in a controlled multiphase process

Simulation, aggregation and thermal analysis of nanostructured calcite obtained in a controlled multiphase process

Calcite precipitation from CO2–H2O–Ca(OH)2 slurry under high pressure of CO2

Experimental investigation of scaling control by a non-phosphorous polymer: polyaspartic acid

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