| Mineral: |
Hematite |
| Reference: |
EP20 |
| SCM Type: |
DDL - Diffuse Double Layer |
| Ligand: |
UO2<2+>
- uranyl(VI)
|
| Site Type: |
»Fe-OH |
| Equation: |
2 »Fe-OH + UO2<2+> ⇔ (»Fe-O)2-UO2 + 2 H<1+> |
| LogK: |
20.3 LogK°I=0 (Conversion to I = 0): 20.39
LogK2.31 nm−2 (SSD-normalized): 22.17
|
| Experiment: |
Batch Sorption Experiments |
| Ionic Strength: |
0.01 mol/L
NaCl
|
| Temperature: |
323.15 K |
| Solid/Liquid Ratio: |
0.51 g/L |
| pH Range: |
3 - 6.5 |
| Ligand Concentration Range: |
2.16E-8; 4.35E-8 mol/L |
| Fit Method: |
FITEQL |
| Comment: |
referenced to the site occupancy standard state and calculated with the equation: log K‡ = log KSC + 2 log (NsAs) + log Cs
− log (N‡A‡), where N‡ and A‡ are the theoretical site density (10 × 1018 sites m−2) and surface area (10 m²/g), respectively, suggested by [S03]; Ns...site density (5.7E18 sites/m²), As...BET surface area (30.7 m²/g), Cs...solid-phase concentration (0.51 g/L) |
| |
