Mineral: |
Bentonite |
Reference: |
ZLQWW16 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
UO2<2+>
- uranyl(VI)
|
Site Type: |
»Al-OH |
Equation: |
»Al-OH + 3 UO2<2+> + 5 H2O ⇔ »Al-O-(UO2)3(OH)5 + 6 H<1+> |
LogK: |
-18.2 LogK°I=0 (Conversion to I = 0): -17.56
LogK2.31 nm−2 (SSD-normalized): -15.50
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
295.0 K |
Solid/Liquid Ratio: |
1.0 g/L |
pH Range: |
2-8 |
Ligand Concentration Range: |
1E-4 mol/L |
Fit Method: |
MINTEQ |
Comment: |
also ion exchange: 2»XNa + UO2<2+> = (»X)2UO2 + 2H<1+> with log K = -0.35; presence of fulvic acid: »AlOH + HFA + UO2<2+> = »AlOUO2HFA<2+>, log K = 9.30 |
|