Mineral: |
Montmorillonite |
Reference: |
KBBBM21 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
Ra<2+>
- radium
|
Site Type: |
»X(w2)-OH |
Equation: |
»X(w2)-OH + Ra<2+> ⇔ »X(w2)-O-Ra<1+> + H<1+> |
LogK: |
-5.0
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
NaCl
|
Temperature: |
294.15 K |
pH Range: |
5 - 10 |
Ligand Concentration Range: |
2E-7; 1.9E-8; 1.8E-8 mol/L |
Fit Method: |
MINEQL |
Comment: |
I = 0.02, 0.14 and 0.3 M; S/L ratio: 2.21, 8.33 and 13.95; in case pH is below 8 and ionic strength is below 0.1 M, the adsorption by cation exchange (also modeled in the study) is dominant and the contribution by surface complexation becomes negligible |
|