Mineral: |
Bentonite |
Reference: |
SVSBC98 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
UO2<2+>
- uranyl(VI)
|
Site Type: |
»X-OH |
Equation: |
»X-OH + UO2<2+> + H2O ⇔ »X-O-UO2(OH) + 2 H<1+> |
LogK: |
-7.25 LogK°I=0 (Conversion to I = 0): -7.04
LogK2.31 nm−2 (SSD-normalized): -3.31
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
granitic water
|
Temperature: |
298.0 K |
Solid/Liquid Ratio: |
1.98 g/L |
pH Range: |
4-11 |
Ligand Concentration Range: |
6.67E-7 mol/L |
Fit Method: |
FITEQL |
Comment: |
recaculation of the given equation: »X-OH = »X-O<1-> + H<1+> -logK1 = pK2; »X-O<1-> + UO2<2+> +OH<1-> = »X-O-UO2OH logK4; UO2<2+>+H2O=UO2OH<1+>+H<1+> logKU1=-5.25; »X-OH+UO2<2+>+H2O=»X-O-UO2(OH)+2H<1+> logK4+logKU1-logK1 |
|