Mineral: |
Illite |
Reference: |
CVMC22 |
SCM Type: |
NE - Non-electrostatic |
Ligand: |
Fe<2+>
- iron(II)
|
Site Type: |
»X(s)-OH |
Equation: |
»X(s)-OH + Fe<2+> ⇔ »X(s)-O-Fe<2+> + H<1+> + e<1-> |
LogK: |
-2.2 ± 0.3
LogK°I=0 (Conversion to I = 0): -1.88
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
298.15 K |
Solid/Liquid Ratio: |
1.0 g/L |
pH Range: |
2 - 10 |
Ligand Concentration Range: |
1E-7 mol/L |
Fit Method: |
PHREEQC |
Comment: |
Modified sorption model for illite with oxidative Fe(II) uptake (model B) and extended model B including Fe precipitation;
Cation exchange reaction: 2Na<1+>-illite + Fe<2+> = Fe<2+>-illite + 2Na<1+> with log K = 2.0 ± 0.1 |
|