| Mineral: |
Goethite |
| Reference: |
TS96 |
| SCM Type: |
CC - Constant Capacitance |
| Ligand: |
UO2<2+>
- uranyl(VI)
|
| Site Type: |
»Fe-OH |
| Equation: |
»Fe-OH + UO2<2+> + 4 H2O ⇔ »Fe-OH-UO2(OH)4<2-> + 4 H<1+> |
| LogK: |
-19.68 ± 0.47
LogK°I=0 (Conversion to I = 0): -19.68
LogK2.31 nm−2 (SSD-normalized): -18.74
|
| Experiment: |
Batch Sorption Experiments |
| Ionic Strength: |
0.0 mol/L
NaNO3
|
| pH Range: |
4-9 |
| Ligand Concentration Range: |
1E-7.1 - 1E-5.4 mol/L |
| Fit Method: |
FITEQL |
| Comment: |
weighted constants based on experimental data of [HL85] with [U(VI)] = 1E-5M and [T84] with [U(VI)] = 1E-7.1 M to 1E-5.4 M; experiments at IS = 0.1 M NaNO3, corrected to I = 0; sorption reaction not given, only surface species; sorption edge of [HL85] is ~ 1 pH unit lower than that of [T84], discrepancy may be due to uranium loss to sinks other than goethite; significance level 95% (2sigma); solid concentration 0.41 g/L [T84] and 1 g/L [HL85] |
| |
