Physics
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976gecoa..40..191p&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 40, Issue 2, pp.191-202
Physics
14
Scientific paper
The dissolution of Iceland spar in CO 2 -saturated solutions at 25°C and 1 atm total pressure has been followed by measurement of pH as a function of time. Surface concentrations of reactant and product species have been calculated from bulk fluid data using mass transport theory and a model that accounts for homogeneous reactions in the bulk fluid. The surface concentrations are found to be close to bulk solution values. This indicates that calcite dissolution under the experimental conditions is controlled by the kinetics of surface reaction. The rate of calcite dissolution follows an empirical second order relation with respect to calcium and hydrogen ion from near the initial condition (pH 3.91) to approximately pH 5.9. Beyond pH 5.9 the rate of surface reaction is greatly reduced and higher reaction orders are observed. Calculations show that the rate of calcite dissolution in natural environments may be influenced by both transport and surface-reaction processes. In the absence of inhibition, relatively short times should be sufficient to establish equilibrium.
Plummer Neil L.
Wigley Tom M. L.
No associations
LandOfFree
The dissolution of calcite in CO 2 -saturated solutions at 25°C and 1 atmosphere total pressure does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The dissolution of calcite in CO 2 -saturated solutions at 25°C and 1 atmosphere total pressure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The dissolution of calcite in CO 2 -saturated solutions at 25°C and 1 atmosphere total pressure will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1298121