| Mineral: |
Gibbsite |
| Reference: |
J95 |
| SCM Type: |
DDL - Diffuse Double Layer |
| Ligand: |
UO2<2+>
- uranyl(VI)
|
| Site Type: |
»Al-OH |
| Equation: |
»Al-OH + UO2<2+> + H2O ⇔ »Al-O-UO2(OH) + 2 H<1+> |
| LogK: |
-3.752 ± 0.078
LogK2.31 nm−2 (SSD-normalized): -5.14
|
| Experiment: |
Batch Sorption Experiments |
| Ionic Strength: |
NaClO4
|
| Temperature: |
298.15 K |
| Solid/Liquid Ratio: |
1.0 g/L |
| pH Range: |
2-7 |
| Ligand Concentration Range: |
1E-6 - 1E-4 mol/L |
| Fit Method: |
FITEQL |
| Comment: |
Overall optimum logK value:
Counting only the stability constants generated fitting the three surface complexation models to individual data sets, 27 values were determined for the equilibrium sorption constant. The individual data set log K values obtained from the
diffuse layer model and the triple layer model were used to catculate an overall best fit stability constant using the weighted average technique outlined by Dzombak and Morel (1990). |
| |
