Mineral: |
Ferrihydrite |
Reference: |
HZ16 |
SCM Type: |
ES - Extended Stern |
Ligand: |
PO4<3->
- phosphate
|
Site Type: |
»Fe-singly |
Equation: |
»Fe-OH<-0.5> + PO4<3-> + 2 H<1+> ⇔ »Fe-O<-0.22>-PO2OH<-1.28> + H2O |
LogK: |
26.36 ± 0.2
LogK2.31 nm−2 (SSD-normalized): 26.43
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
NaNO3
|
pH Range: |
4-12 |
Ligand Concentration Range: |
2.77E-4 (1); 7.8E-4 (2); 2.45E-3 (3) mol/L |
Fit Method: |
Unknown |
Comment: |
protonated monodentate complex MH; S/L ratio: ads. isoth. 0.05-2 g/L (0.01 M NaNO3), ads. edge (1) 0.0707 g/L (0.1 and 0.95 M NaNO3) and (2) 0.602 g/L, (3) 0.201g/L (0.5 NaNO3); Log K values for the monodentate species, formed from either ≡FeOH(a) or ≡FeOH(b), are kept equal |
|