| Mineral: |
Montmorillonite |
| Reference: |
HW05a |
| SCM Type: |
DDL - Diffuse Double Layer
|
| Ionic Strength: |
0.0 mol/L of
|
| Site Type: |
»X(s)-OH |
| PZC: |
2.5 |
| pK1: |
4.38 |
pK1°I=0 (Conversion to I = 0): |
4.38 |
pK12.31 nm−2 (normalized): |
1.00 |
| pK2: |
5.26 |
pK2°I=0 (Conversion to I = 0): |
5.26 |
pK22.31 nm−2 (normalized): |
8.64 |
| Site Density in nm-2: |
0.0010 |
| Original Site Density: |
0.000001 mol / L solution
|
| Solid/Liquid Ratio in g/L: |
20.0 |
| pH Range: |
|
| Temperature in K: |
298.15 |
| Method for Site Density: |
Mean of Different Sources |
| Method for Protolysis: | Literature |
| Fit Method: |
| Comment: |
pK from [BDP00] (but there 1g/L); SSD determined by experimental data of TBT adsorption; SSD from [BDP00]: 36.8µmol/g (here incorrect unit mmol/L); PZC <=2-3; surface charge density 1.15 µmol/m^2; ; also ion exchange >XNa + H+ =XH + Na+ logK=8.67; >X(s)OH: selective site, >XOH: nonselective site; to get the best fits, it is suggested to reduce the number of selective sites 1000-fold lower than nonselective ones for TBT adsorprption instead of 100-fold lower, which is usually done for modeling adsorption |
| |
