A model of carbon dioxide dissolution and mineral carbonation kinetics

M. J. Mitchell, O. E. Jensen, K. A. Cliffe, M. M. Maroto-Valer
2009 Proceedings of the Royal Society A  
Receive free email alerts when new articles cite this article -sign up in http://rspa.royalsocietypublishing.org/subscriptions go to: Proc. R. Soc. A To subscribe to This journal is The kinetics of the dissolution of carbon dioxide in water and subsequent chemical reactions through to the formation of calcium carbonate, a system of reactions integral to carbon sequestration and anthropogenic ocean acidification, is mathematically modelled using the mass action law. This group of reactions is
more » ... ressed as a system of five coupled nonlinear ordinary differential equations, with 14 independent parameters. The evolution of this system to equilibrium at 25 • C and 1 atm, following an instantaneous injection of gaseous carbon dioxide, is simulated. An asymptotic analysis captures the leading-order behaviour of the system over six disparate time scales, yielding expressions for all species in each time scale. These approximations show excellent agreement with simulations of the full system, and give remarkably simple formulae for the equilibrium concentrations.
doi:10.1098/rspa.2009.0349 fatcat:jdqjxv3eibffzca6u5j3dj3ha4