GROWTH RATES OF POTASSIUM SULPHATE CRYSTALS OF DIFFERENT SURFACE QUALITIES IN THE SIZE RANGE FROM 10–100 μm

Ulrich, Joachim; Kruse, Michael; Kallies, B.; Garside, J.

doi:10.1080/00986449108911576

Cited by 3 publications

(2 citation statements)

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“…Growing potassium sulfate crystals exhibit not only size-dependent growth [35][36][37] but also growth rate dispersion. 37,38 Hence, to simplify the growth rate measurements, the growth rates of individual crystals were examined before and after the addition of OSA and BS. By doing this, the relative change in growth rate (caused by OSA or BS) was examined, which should remove or greatly reduce the complications of size-dependent growth or growth rate dispersion.…”

Section: Growth Rate Experiments To Obtain Meaningful Resultsmentioning

confidence: 99%

“…A blank run was conducted using these conditions, over the same approximate time used for additive experiments, and linear growth was observed throughout indicating that the supersaturation was not significantly depleted. Growing potassium sulfate crystals exhibit not only size-dependent growth − but also growth rate dispersion. , Hence, to simplify the growth rate measurements, the growth rates of individual crystals were examined before and after the addition of OSA and BS. By doing this, the relative change in growth rate (caused by OSA or BS) was examined, which should remove or greatly reduce the complications of size-dependent growth or growth rate dispersion.…”

Section: Resultsmentioning

confidence: 99%

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Mechanisms of Dye Incorporation into Potassium Sulfate: Computational and Experimental Studies

2007

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Potassium sulfate crystals orient and overgrow 2-aminobenzenesulfonate (OSA), and many other sulfonated aromatic compounds, on particular facets during growth from solution. The energetics associated with adsorption of OSA and benzenesulfonate (BS) were calculated using both molecular mechanical and density functional methods, in order to assess the surface binding effectiveness of these compounds on various faces of potassium sulfate. It was found that both theoretical techniques predicted that OSA and BS bind to potassium sulfate to a similar extent. The surface binding capacities were also assessed experimentally by studying the growth rates of individual faces of K 2 SO 4 , with results showing similar findings to those from the computational studies.

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