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Mechanisms and kinetic modeling of calcium oxalate crystal aggregation in a urinelike liquor. Part I: Mechanisms
Author(s) -
Hartel R. W.,
Gottung B. E.,
Randolph A. D.,
Drach G. W.
Publication year - 1986
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690320715
Subject(s) - calcium oxalate , news aggregator , chemistry , supersaturation , kinetic energy , crystal (programming language) , suspension (topology) , calcium , chemical engineering , mineralogy , thermodynamics , organic chemistry , physics , mathematics , quantum mechanics , homotopy , computer science , pure mathematics , programming language , operating system , engineering
The 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.