Mineral: |
Ferrihydrite |
Reference: |
BB93 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
NpO2<1+>
- neptunyl(V)
|
Site Type: |
»Fe(s)-OH |
Equation: |
»Fe(s)-OH + NpO2<1+> ⇔ »Fe(s)-O-NpO2 + H<1+> |
LogK: |
-0.98 LogK°I=0 (Conversion to I = 0): -0.98
LogK2.31 nm−2 (SSD-normalized): -0.89
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.00733 mol/L
ground water
|
Temperature: |
293.15 K |
pH Range: |
3-9 |
Ligand Concentration Range: |
4.5E-13 - 4.5E-11 mol/L |
Fit Method: |
FITEQL |
Comment: |
data taken from [GASM91] and reinterpreted using the DDL model; [Np] from 4.5E-13 to 4.5E-11 M; artificial ground water: 2.8E-3M Na+, 1E-4K+, 1.8E-4M Mg2+, 3.6E-4 Ca2+, 2E-3 Cl-, 1E-4M SO42-, 1.8E-3M SUM CO32- |
|