On the effect of carbonate on barite growth at elevated temperatures

Sánchez-Pastor, Nuria; Kaliwoda, Melanie; Veintemillas-Verdaguer, Sabino; Jordan, Guntram

doi:10.2138/am.2013.4420

Cited by 6 publications

(12 citation statements)

References 42 publications

(46 reference statements)

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“…According to these authors, the distribution of the "foreign" ions will be predetermined by the structure of the underlying layer and the interactions between the ions, resulting in a decrease in the activation entropy for the growth of this layer and, as a consequence, in a decrease in the growth rate or even the complete arrest of growth. This may as well explain observations by Sánchez-Pastor et al (2013), who found that carbonate ions have different effects on successive layers formed on barite during growth. In this work, the spreading rate of the first layer grown on a pristine barite surface increases slightly with carbonate content, while the growth of the second layer is notably inhibited at a carbonate activity of 6.6·10 −5 M. This effect is ascribed to carbonate incorporation into barite (shown by Raman spectroscopic analysis).…”

Section: Self-inhibiting Layer and Surface Precipitatessupporting

confidence: 84%

“…This effect is interpreted to be related to the chemisorption of hydroxyl or carbonate ions onto specific faces (Sánchez-Pastor et al, 2013). According to previous work, barite crystals with equidimensional morphologies may result from the overdevelopment of the (001) face Massi et al, 2010).…”

Section: Effect Of Ph On 3d Nucleation (Bulk Experiments)mentioning

confidence: 82%

“…According to previous work, barite crystals with equidimensional morphologies may result from the overdevelopment of the (001) face Massi et al, 2010). This could be the result of retarded growth rate of this face relative to other barite faces due to the chemisorption of foreign ions, possibly hydroxyl or carbonate ions (Sánchez-Pastor et al, 2013) that would make this face more important in the final habit of the crystal.…”

Section: Effect Of Ph On 3d Nucleation (Bulk Experiments)mentioning

confidence: 95%

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The influence of pH on barite nucleation and growth

et al. 2015

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Section: Self-inhibiting Layer and Surface Precipitatessupporting

confidence: 84%

Section: Effect Of Ph On 3d Nucleation (Bulk Experiments)mentioning

confidence: 82%

Section: Effect Of Ph On 3d Nucleation (Bulk Experiments)mentioning

confidence: 95%

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The influence of pH on barite nucleation and growth

et al. 2015

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“…Solution compositions (calculated at 108 °C) can be found in Table 2 ([i] denotes concentration of i th species). Atmospheric CO 2 was not removed from solutions as it does not significantly affect saturation states, and predicted concentrations of CO 2 were significantly lower than those required to inhibit growth (Sanchez-Pastor et al, 2013). The saturation indices ( , (i) denotes activity of species i) studied were SI = 0.12, 0.33, and 0.52 and the pH was not intentionally fixed, though the pH calculated using PHREEQC was 6.2 for all solutions.…”

Section: Materials and Solution Preparationmentioning

confidence: 99%

Hydrothermal atomic force microscopy observations of barite step growth rates as a function of the aqueous barium-to-sulfate ratio

Bracco

Gooijer

Higgins

2016

Geochimica et Cosmochimica Acta

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The rate of growth of ionic minerals from solutions with varying aqueous cation:anion ratios may result in significant errors in mineralization rates predicted by commonly-used affinitybased rate equations. To assess the potential influence of solute stoichiometry on barite growth, step velocities on the barite (001) surface have been measured at 108°C using hydrothermal atomic force microscopy (HAFM) at moderate supersaturation and as a function of the aqueous barium:sulfate ratio (r). Barite growth hillocks at r ~ 1 were bounded by steps, however at r < 1, kink site densities increased, steps followed a direction vicinal to , and the [010] steps developed. At r > 1, steps roughened and rounded as the kink site density increased. Step velocities peaked at r = 1 and decreased roughly symmetrically as a function of r, indicating the attachment rates of barium and sulfate ions are similar under these conditions. We hypothesize that the differences in our observations at high and low r arise from differences in the attachment rate constants for the obtuse and acute steps. Based on results at low r, the data suggests the attachment rate constant for barium ions is similar for obtuse and acute steps. Based on results at high r, the data suggests the attachment rate constant for sulfate is greater for obtuse steps than acute steps. Utilizing a step growth model developed by Stack and Grantham (2010)

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“…Carbonate (CO 3 2-, [20]) is the main inorganic anion (other than the halogens reported in [14][15][16]) that has been investigated. It was found that carbonate inhibits barium sulfate crystallization.…”

Section: Introductionmentioning

confidence: 99%

The impact of sulfite ions on barium sulfate crystallization

Jones

Ogden

Radomirovic

2019

Journal of Crystal Growth

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In this manuscript we investigate an inorganic, anionic promoter of barium sulfate crystallization. Sulfite ions are found to promote barium sulfate crystallization at low concentrations. Turbidimetric experiments show homogenous nucleation promotion and AFM results show possible 2D nucleation promotion in the presence of sulfite ions. Growth promotion appears to be mainly in the c-axis relative to the other faces according to morphology results at low S values. Analysis of the sulfite ion impact by assuming it completely oxidizes to sulfate did not adequately explain all experimental results, suggesting that these ions also interact in some other way. One mechanism by which sulfite might promote barium sulfate crystallization is by promoting de-solvation of the barium ion by weakly complexing with it.

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On the effect of carbonate on barite growth at elevated temperatures

Cited by 6 publications

References 42 publications

The influence of pH on barite nucleation and growth

The influence of pH on barite nucleation and growth

Hydrothermal atomic force microscopy observations of barite step growth rates as a function of the aqueous barium-to-sulfate ratio

The impact of sulfite ions on barium sulfate crystallization

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