Mineral: |
Ferrihydrite |
Reference: |
SBLVD14 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
Ca<2+>
- calcium
|
Site Type: |
»Fe-OH |
Equation: |
»Fe-OH + Ca<2+> + H2O ⇔ (»Fe-O)-Ca(OH) + 2 H<1+> |
LogK: |
-12.4 LogK°I=0 (Conversion to I = 0): -12.19
LogK2.31 nm−2 (SSD-normalized): -8.07
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaClO4
|
Solid/Liquid Ratio: |
10.0 g/L |
pH Range: |
4-11 |
Fit Method: |
PHREEQC |
Comment: |
To model the effect of Ca2+ competition, complexes and equations used by Sverjensky (2006) for sorption of Ca2+ to goethite were used, although the equilibrium constants had to be adapted to obtain the best fit for ferrihydrite
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