This chapter addresses the use of multicomponent reactive transport modeling (MCRTM) in an attempt to understand and quantify the interaction between acid water and rocks or Portland cement (mortar, concrete) during and after the injection of CO2 in deep aquifers (geological CO2 storage) and in the treatment of acid mine drainage (AMD). Anthropogenic acidification of water occurs in the two cases (Gunter et al. 1993; Nordstrom and Alpers 1999).

In the first case, CO2-rich water is acidic and out of equilibrium with the reservoir and seal rocks of a geological CO2 storage...

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