Variation of Crystal Dissolution Rate Based on a Dissolution Stepwave Model

Details Variation of Crystal Dissolution Rate Based on a Dissolution Stepwave Model Variation of Crystal Dissolution Rate Based on a Dissolution Stepwave Model

Mar 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001sci...291.2400l&link_type=abstract

Science, Volume 291, Issue 5512, pp. 2400-2405 (2001).

Physics

18

Scientific paper

A formulation based on defect-generated dissolution stepwaves of the variation of dissolution rate with the degree of undersaturation is validated by near-atomic-scale observations of surfaces, Monte Carlo simulations, and experimental bulk dissolution rates. The dissolution stepwaves emanating from etch pits provide a train of steps similar to those of a spiral but with different behavior. Their role in accounting for the bulk dissolution rate of crystals provides a conceptual framework for mineral dissolution far from equilibrium. Furthermore, the law extends research to conditions closer to equilibrium and predicts a nonlinear decrease in the rate of dissolution as equilibrium is approached, which has implications for understanding artificial and natural processes involving solid-fluid reactions.

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