Mineral: |
Montmorillonite |
Reference: |
SFBMB22 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
UO2<2+>
- uranyl(VI)
|
Site Type: |
»X(s)-OH |
Equation: |
»X(s)-OH + UO2<2+> + 3 H2O ⇔ »X(s)-O-UO2(OH)3<2-> + 4 H<1+> |
LogK: |
-20.5 ± 0.4
LogK°I=0 (Conversion to I = 0): -20.50
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.0 mol/L
|
Temperature: |
296.15 K |
Solid/Liquid Ratio: |
1.2 g/L |
pH Range: |
3 - 11 |
Ligand Concentration Range: |
1.4E-7 mol/L |
Fit Method: |
PHREEQC |
Comment: |
Fit Method: PHREEQC coupled with UCODE 2014;
cation exchange reactions [BB97b]:
2Na+-clay + Ca2+ = Ca2+-clay + 2Na+, log K = 0.61;
2Na+-clay + UO22+ = UO22+-clay + 2Na+, log K = 0.15;
SSA from [BB97a] |
|