Mineral: |
Ferrihydrite |
Reference: |
AVTC02 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
CO3<2->
- carbonate
|
Site Type: |
»Fe(w)-OH |
Equation: |
»Fe(w)-OH + CO3<2-> + 2 H<1+> ⇔ »Fe(w)-O-CO2H + H2O |
LogK: |
20.37 ± 0.2
LogK°I=0 (Conversion to I = 0): 21.01
LogK2.31 nm−2 (SSD-normalized): 22.10
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaNO3
|
Solid/Liquid Ratio: |
0.078 g/L |
Fit Method: |
PEST |
Comment: |
PEST in combination with PHREEQC-2; values from batch sorption experiments of [ZGSR87]; uncertainty interval indicates the aproximate 95% confidence limits; pK from [DM90] with 0.87mM Fe=78mg ferrihydrite/L with 0.174 mM sites; for anions only the weak sites are active |
|