Inhibition of calcite growth by alginate

Lakshtanov, L. Z.; Bovet, N.; Stipp, S. L. S.

doi:10.1016/j.gca.2011.04.014

Cited by 33 publications

(68 citation statements)

References 39 publications

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“…The constant composition-method setup has been used in the previous work 23,38 . Stock solutions of CaCl 2 , NaHCO 3 , Na 2 CO 3 were prepared using reagent grade chemicals from Sigma-Aldrich.…”

Section: Methodsmentioning

confidence: 99%

The mechanisms of crystal growth inhibition by organic and inorganic inhibitors

et al. 2018

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Understanding mineral growth mechanism is a key to understanding biomineralisation, fossilisation and diagenesis. The presence of trace compounds affect the growth and dissolution rates and the form of the crystals produced. Organisms use ions and organic molecules to control the growth of hard parts by inhibition and enhancement. Calcite growth in the presence of Mg2+ is a good example. Its inhibiting role in biomineralisation is well known, but the controlling mechanisms are still debated. Here, we use a microkinetic model for a series of inorganic and organic inhibitors of calcite growth. With one, single, nonempirical parameter per inhibitor, i.e. its adsorption energy, we can quantitatively reproduce the experimental data and unambiguously establish the inhibition mechanism(s) for each inhibitor. Our results provide molecular scale insight into the processes of crystal growth and biomineralisation, and open the door for logical design of mineral growth inhibitors through computational methods.

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Section: Methodsmentioning

confidence: 99%

The mechanisms of crystal growth inhibition by organic and inorganic inhibitors

et al. 2018

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“…Such effects on crystal growth were originally discovered for crystalline oleic acid, 388 paraffin C 36 H 74 with dioctadecylamine, 389 potassium and ammonium dihydrogen phosphates grown with Al 3+ , Fe 3+ , and Cr 3+ , 390−394 potassium sulfate with Cr 3+ , 395,396 ice, 397 and paracetamol. 398 They have been observed with MM additives to ice, 58,59,65,170 lysozyme, 66,376 calcite, 399 and COM. 51,52 A theory of time-dependent growth phenomena was first consid ered by Punin 3 9 1 and e l abo rat e d subsequently.…”

Section: Time Dependencementioning

confidence: 98%

Crystal Growth with Macromolecular Additives

2017

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Interactions of macromolecules with growing crystalline surfaces play an important role in biomineralization, determine survival of some organisms at low temperatures, and offer a range of potential industrial applications. The current understanding of crystal growth processes in the presence of macromolecules, including peptides and proteins, is reviewed, with a focus on interactions between macromolecules and surfaces of crystalline materials, macromolecule adsorption on different types of crystal surfaces, crystallization kinetics in the presence of macromolecular additives, macromolecule incorporation, and defect generation. Throughout, special attention is paid to the selectivity of macromolecule adsorption on, and incorporation within, crystal surfaces. The special role played by the size and complexity of macromolecules as compared to other crystallization additives is emphasized.

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“…The precipitation rate of calcite is of the order of k 0 = 10 −6 mol/m 2 /s (for a relative supersaturation index of 1) [56]. Given our calcite concentration, the calcite surface area per unit volume is S = 5 · 10 3 m 2 /L.…”

Section: Kinetics For Carbonationmentioning

confidence: 99%

Simple ions control the elasticity of calcite gels via interparticle forces

Liberto

Barentin

Colombani

et al. 2019

Journal of Colloid and Interface Science

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Suspensions of calcite in water are employed in many industrial fields such as paper filling, pharmaceutics, heritage conservation or building construction, where the rheological properties of the paste need to be controlled. We measure the impact of simple ions such as calcium, sodium or hydroxide on the elasticity of a nanocalcite paste, which behaves as a colloidal gel. We confront our macroscopic measurements to DLVO interaction potentials, based on chemical speciations and measurements of the zeta potential. By changing the ion type and concentration, we go beyond the small repulsion regime and span two orders of magnitude in shear modulus. Upon addition of calcium hydroxide, we observe a minimum in shear modulus, correlated to a maximum in the DLVO energy barrier, due to two competing effects: Calcium adsorption onto calcite surface rises the zeta potential and consequently the electrostatic repulsion, while increasing salt concentration induces stronger electrostatic screening. We also demonstrate that the addition of sodium hydroxide completely screens the surface charge and leads to a more rigid paste. A second important result is that carbonation of the calcite suspensions by the atmospheric CO 2 leads to a convergent high elasticity of the colloidal gels, whatever their initial value, also well rationalized by DLVO theory and resulting from a decrease in zeta potential and in surface charge density.

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Inhibition of calcite growth by alginate

Cited by 33 publications

References 39 publications

The mechanisms of crystal growth inhibition by organic and inorganic inhibitors

The mechanisms of crystal growth inhibition by organic and inorganic inhibitors

Crystal Growth with Macromolecular Additives

Simple ions control the elasticity of calcite gels via interparticle forces

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