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Pure Appl. Chem.
74(10), 1801-1810, 2002
Pure and Applied
Vol. 74, Issue 10
Nonlinear mass transfer and hydrodynamic stability in solubility
Institute of Chemical Engineering, Bulgarian Academy
of Sciences, Acad. G. Bontchev Str., Bl.103, 1113 Sofia, Bulgaria
Abstract: The dissolution of gases, liquids,or solids in liquids
is a heterogeneous reaction, and in many cases, the reaction rate is
limited by a diffusive transfer of substance in the boundary layer at
the face interphase. In modern industry, intensive interphase mass transfer
processes are accomplished by large concentration gradients. This can
result in a set of nonlinear effects and the difference between experimental
data and predictions of the linear mass transfer theory. One of the
main nonlinear effects is a result of the induction of a secondary flow
at the interface boundary. This can lead to essential changes of the
dissolution rate and the hydrodynamic stability of the system.
* Lectures presented at the 10th International Symposium
on Solubility Phenomena, Varna, Bulgaria, 22 -26 July 2002. Other
lectures are published in this issue, pp. 1785-1920.
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