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If carbon dioxide stored in deep saline aquifers were to leak into an overlying aquifer containing potable groundwater, the intruding CO 2 would change the geochemical conditions and cause secondary effects mainly induced by changes in pH. In particular, hazardous trace elements such as lead and arsenic, which are present in the aquifer host rock, could be mobilized. In an effort to evaluate...
As an effort to evaluate risks associated with geologic sequestration of CO 2 , this work assesses the potential effects of CO 2 leakage on groundwater quality. Reactive transport simulations are performed to study the chemical evolution of aqueous Pb and As after the intrusion of CO 2 from a storage reservoir into a shallow confined groundwater resource. The simulations use...
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