Mineral: |
Ferrihydrite |
Reference: |
TG16 |
SCM Type: |
CDM - (CD-)MUSIC |
Ligand: |
Cd<2+>
- cadmium
|
Site Type: |
»Fe-singly |
Equation: |
2 »Fe-OH<0.5-> + Cd<2+> + PO4<3-> + 2 H<1+> ⇔ (»Fe-O)2-H-CdPO3-H + H2O |
LogK: |
30.5 ± 0.06
LogK°I=0 (Conversion to I = 0): 31.17
LogK2.31 nm−2 (SSD-normalized): 30.65
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.01 mol/L
NaNO3
|
Temperature: |
294.15 K |
pH Range: |
4 - 8 |
Ligand Concentration Range: |
3E-7; 3E-6; 3E-5 mol/L |
Fit Method: |
MINTEQ |
Comment: |
3 mmol/L ferrihydrite and 0.3, 3 or 30 µmol/L Cd and 600 µmol/l PO4;
0.3 mmol/L ferrihydrite and 30 µmol/L Cd and 60 µmol/L PO4;
Phosphate surface complexation constants were optimized by [TSPG13] |
|