| Mineral: |
Illite |
| Reference: |
GE07 |
| SCM Type: |
CC - Constant Capacitance |
| Ligand: |
Pb<2+>
- lead
|
| Site Type: |
»X-OH |
| Equation: |
»X-OH + Pb<2+> ⇔ »X-O-Pb<1+> + H<1+> |
| LogK: |
-0.56 LogK°I=0 (Conversion to I = 0): -0.24
LogK2.31 nm−2 (SSD-normalized): 3.21
|
| Experiment: |
Batch Sorption Experiments |
| Ionic Strength: |
0.1 mol/L
NaNO3
|
| Temperature: |
298.15 K |
| Solid/Liquid Ratio: |
2.97 g/L |
| pH Range: |
3-9 |
| Ligand Concentration Range: |
4.96E-5 mol/L |
| Fit Method: |
FITEQL |
| Comment: |
complexation on the edge site; at 0.01 and 0.001M the amount of metal adsorbed on the surface sites was large compared to that on the edge sites, therefore the logK(=XOPb+), calculated by FITEQL, on these edge sites was extremely small; logK of this ionic strength was used for the lower ionic strengths (activity coefficients were adjusted with the aid of the Davies equation): 0.01M: logK=-0.74; 0.001M: logK=-0.82 |
| |
