Table 4
Kinetic parameters for minerals.
Mineral | A′ (cm2/g) | Parameters for the kinetic rate law |
|||||||
---|---|---|---|---|---|---|---|---|---|
Neutral mechanism |
Acid mechanism |
Base mechanism |
|||||||
k25 (mol/m2/s) | Ea (kJ/mol) | k25 (mol/m2/s) | Ea (kJ/mol) | n H | k25 (mol/m2/s) | Ea (kJ/mol) | n OH | ||
Calcite | 9.8 | 1.549 × 10−6 | 23.5 | 5.012 × 10−1 | 14.4 | 1.0 | 3.311 × 10−4 | 35.1 | 1.0 |
Quartz | 9.1 | 1.023 × 10−14 | 87.7 |