Mineral: |
Ferrihydrite |
Reference: |
MCJ09 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
UO2<2+>
- uranyl(VI)
|
Site Type: |
»Fe(w)-OH |
Equation: |
»Fe(w)-OH + UO2<2+> ⇔ »Fe(w)-O-UO2<1+> + H<1+> |
LogK: |
2.534 LogK°I=0 (Conversion to I = 0): 2.86
LogK2.31 nm−2 (SSD-normalized): 4.26
|
Experiment: |
Best Estimate |
Ionic Strength: |
0.1 mol/L
NaNO3
|
Temperature: |
298.15 K |
pH Range: |
<7 |
Ligand Concentration Range: |
1E-5 mol/L |
Fit Method: |
UCODE_2005 |
Comment: |
refitted data of [H81] and [HL85]; 2 data sets; source of thermodynamic data: WATEQ4F; S/L ratio was 1 g/L and 0.15 g/L; no carbonate; re-estimation of constants by coupling the geochemical computer code PHREEQC with UCODE_2005 (automated parameter optimization program) |
|