Mineral: |
Montmorillonite |
Reference: |
TOS14 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
Am<3+>
- americium
|
Site Type: |
»X-OH |
Equation: |
»X-OH + Am<3+> + H2O ⇔ »X-O-Am(OH)<1+> + 2 H<1+> |
LogK: |
-7.62 LogK°I=0 (Conversion to I = 0): -6.87
LogK2.31 nm−2 (SSD-normalized): -4.94
|
Experiment: |
Mean of Different Sources |
Ionic Strength: |
0.1 mol/L
|
pH Range: |
3-11 |
Fit Method: |
FITEQL |
Comment: |
"The equilibrium constants derived from individual optimization runs using a total of six data-sets from [G94b] and [MBB08] were averaged".
Data of [MBB08] were measured for the sorption of Eu(III) on Na-montmorillonite, chemical analogy between Am(III) and Eu(III) is assumed.
Ion exchange reaction: 3ZNa + Am<3+> = Z3Am + 3Na<1+> with log K = 2.05 |
|