Mineral: |
Ferrihydrite |
Reference: |
DPW02 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
UO2<2+>
- uranyl(VI)
|
Site Type: |
»Fe(w)-OH |
Equation: |
»Fe(w)-(OH)2 + UO2<2+> ⇔ »Fe(w)-O2-UO2 + 2 H<1+> |
LogK: |
-6.28 LogK°I=0 (Conversion to I = 0): -6.07
LogK2.31 nm−2 (SSD-normalized): -4.55
|
Experiment: |
Mean of Different Sources |
Ionic Strength: |
0.1 mol/L
|
Fit Method: |
FITEQL |
Comment: |
TAO extract of W1 sample dissolved 0.88 mg Fe/g sample [PSDW92], assumption that was derived from a poorly crystalline iron oxide phase similar to ferrihydrite, calculated U sorption less than the observed experimentally for W1 sample, although predicted adsorption by ferrihydrite near pH 6 was significant |
|