Mineral: |
Montmorillonite |
Reference: |
PKKDR18 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
Eu<3+>
- europium(III)
|
Site Type: |
»X(s)-OH |
Equation: |
»X(s)-OH + Eu<3+> + CO3<2-> ⇔ »X(s)-O-EuCO3 + H<1+> |
LogK: |
7.97 LogK°I=0 (Conversion to I = 0): 9.25
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
298.0 K |
Solid/Liquid Ratio: |
1.0 g/L |
pH Range: |
3-9 |
Ligand Concentration Range: |
1.5E-6 mol/L |
Fit Method: |
FITEQL |
Comment: |
2SPNE (2 sites protolysis with no electrostatic term) model (DDL without electrostatics); ion exchange: 3(≡XNa) + Eu3+ <=> ≡X3Eu + 3Na+ with logK = 8.32, (≡XNa) + Eu3+ + SO42- <=> ≡XEuSO4 + 3Na+ with logK = 6.19 |
|