Abstract
AbstractThe tendency for aggregation and disruption of aggregates of calcium oxalate dihydrate (CaOx) crystals in urinelike mother liquor was quantitatively studied in a two‐stage mixed‐suspension, mixed‐productremoval crystallizer/Couette‐flow aggregator operated in series. The degree of aggregation was obtained by comparing measured numbersize and volume‐size crystal distributions in the crystallizer and aggregator outlets. Aggregation was a strong function of CaOx supersaturation and may have changed slightly with rotation speed in the Couette‐flow aggregator. Rupture of the aggregates increased as the spindle rotation in the aggregator increased (presumably increasing turbulence). Average shear rates in these experiments were appreciably above estimated physiological levels.
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