Mineral: |
Kaolinite |
Reference: |
AF10 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
Cd<2+>
- cadmium
|
Site Type: |
»X-OH |
Equation: |
»X-OH + Cd<2+> ⇔ »X-O-Cd<1+> + H<1+> |
LogK: |
-2.4 LogK°I=0 (Conversion to I = 0): -2.08
LogK2.31 nm−2 (SSD-normalized): -2.59
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaClO4
|
Solid/Liquid Ratio: |
1.0 g/L |
pH Range: |
2-8 |
Ligand Concentration Range: |
8.9E-5 mol/L |
Fit Method: |
FITEQL |
Comment: |
Cd adsorption is described by complexation both with the amphoteric site »X-OH and an additional permanent negatively charged surface site: »Y-O<1-> + Cd<2+> = »Y-O-Cd<1+>, log K = 3.9 |
|