Mineral: |
Montmorillonite |
Reference: |
SIT21 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
Sr<2+>
- strontium
|
Site Type: |
»X(w2)-OH |
Equation: |
»X(w2)-OH + Sr<2+> ⇔ »X(w2)-O-Sr<1+> + H<1+> |
LogK: |
-6.5 LogK°I=0 (Conversion to I = 0): -6.50
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.0 mol/L
|
pH Range: |
4.4 - 12.6 |
Ligand Concentration Range: |
9.4E-5; 9.2E-5 mol/L |
Fit Method: |
PHREEQC |
Comment: |
S/L ratio: 42, 172 g/L;
cation exchange and surface complexation combined
(2XNa + Sr2+ = X2Sr + 2Na+ with log K = 0.65 (I ≤ 0.1 M), log K = 1.1 (I = 0.5 M);
XNa + SrOH+ = XSrOH + Na+ with log K = 3.0 (I ≤ 0.1 M), log K = 3.2 (I = 0.5 M)) |
|