Mineral: |
Montmorillonite |
Reference: |
BB06 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
NpO2<1+>
- neptunyl(V)
|
Site Type: |
»X-OH |
Equation: |
»X-OH + NpO2<1+> + H2O ⇔ »X-O-NpO2(OH)<1-> + 2 H<1+> |
LogK: |
-12.0
LogK2.31 nm−2 (SSD-normalized): -7.95
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
NaClO4
|
pH Range: |
2.5-10.5 |
Ligand Concentration Range: |
<1E-13 mol/L |
Fit Method: |
MINSORB |
Comment: |
Na-montmorillonite, 0.01 and 0.1 M NaClO4; solid concentration 0.61-3.2 (0.01M) and 1.2 (0.1M NaClO4), resp., MINSORB code (2-site protolysis no electrostatics surface complexation and cation exchange model developed and incorporated into MINEQL); selectivity coefficient for cation exchange Na-Np=1.1: Na-mont. + NpO2+ = NpO2-mont. + Na+ |
|