Mineral: |
Goethite |
Reference: |
SUG10 |
SCM Type: |
CC - Constant Capacitance |
Ligand: |
UO2<2+>
- uranyl(VI)
|
Site Type: |
»Fe-OH |
Equation: |
2 »Fe-OH + UO2<2+> ⇔ (»Fe-O)2-UO2 + 2 H<1+> |
LogK: |
-4.36 LogK°I=0 (Conversion to I = 0): -4.36
LogK2.31 nm−2 (SSD-normalized): -2.49
|
Experiment: |
Not Specified |
Ionic Strength: |
0.0 mol/L
NaNO3
|
Temperature: |
298.15 K |
pH Range: |
3-9 |
Fit Method: |
MINEQL |
Comment: |
equation (»Fe(OH)2 + UO2<2+> = FeO2UO2 + 2H<1+>) changed for RES³T because no site density given for »Fe(OH)2; conditional logKint values (I = 0.1 M) were extrapolated to the true logKint values (I = 0 M) using the Davies equation; equilibrium speciation in the presence of goethite was predicted using a modified version of a surface complexation model developed by [CBRZ04] |
|