| Mineral: |
Biotite |
| Reference: |
TS96 |
| SCM Type: |
DDL - Diffuse Double Layer |
| Ligand: |
NpO2<1+>
- neptunyl(V)
|
| Site Type: |
»Si-OH |
| Equation: |
»Si-OH + NpO2<1+> ⇔ »Si-OH-NpO2<1+> |
| LogK: |
2.86 ± 0.06
LogK°I=0 (Conversion to I = 0): 2.86
|
| Experiment: |
Batch Sorption Experiments |
| Ionic Strength: |
0.0 mol/L
NaNO3
|
| Temperature: |
303.15 K |
| Solid/Liquid Ratio: |
1.0 g/L |
| pH Range: |
4-11 |
| Ligand Concentration Range: |
6E-6 mol/L |
| Fit Method: |
FITEQL |
| Comment: |
experimental data from [NS91]; [NS91]: exp.under ambient aerobic conditions; experiments were performed at IS = 0.1 M NaNO3, values were corrected for IS = 0; sorption reaction not given, only surface species; sorption behavior is probably a combination of ion exchange at intercrystalline sites and surface complexation along edge sites; other site types (Fe, Mg) may probably also contribute to pH-dependent surface charge; uncertainty represents standard deviation 1sigma; [NS91]: exp.under ambient aerobic conditions; here assumed that CO2 free!! |
| |
