Mineral: |
Ferrihydrite |
Reference: |
FDZ06 |
SCM Type: |
TL - Triple Layer |
Ligand: |
Ca<2+>
- calcium
|
Site Type: |
»Fe-OH |
Equation: |
2 »Fe-OH + Ca<2+> ⇔ (»Fe-O)2-Ca + 2 H<1+> |
LogK: |
-10.2 LogK°I=0 (Conversion to I = 0): -10.20
LogK2.31 nm−2 (SSD-normalized): -6.22
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.0 mol/L
NaNO3
|
Temperature: |
298.15 K |
pH Range: |
3.5-9 |
Ligand Concentration Range: |
1.78E-3 mol/L |
Fit Method: |
FITEQL |
Comment: |
gas phase air - 2% CO2: experiments in 0.004-0.5M NaNO3; 1E-3 - 1E-4 M Fe for sorption experiments; best fit one inner sphere and one outer sphere species, as also observed by [CZR91]; species cited as (=SO)2Ca<2+> |
|