Research Article

Impact of SO2 on Alteration of Reservoir Rock with Ca-Deficient Conditions and Poor Buffering Capacity under a CO2 Geologic Storage Condition

Table 4

Calculated mineral saturation indices with reaction time.

 Time (days)AnhydriteAluniteCalciteGypsumKaoliniteMontmorillonite-MgSideritePyrite

1% SO2

0.1% SO2

Pure CO2n.d.n.d.n.d.n.d.
n.d.n.d.n.d.n.d.
n.d.n.d.n.d.n.d.
n.d.n.d.n.d.n.d.
n.d.n.d.n.d.n.d.

n.d.: not determined.