Mineral: |
Ferrihydrite |
Reference: |
G02a |
SCM Type: |
CC - Constant Capacitance |
Ligand: |
AsO3<3->
- arsenite
|
Site Type: |
»Fe-OH |
Equation: |
»Fe-OH + AsO3<3-> + 2 H<1+> ⇔ »Fe-HAsO3<1-> + H2O |
LogK: |
32.43 LogK°I=0 (Conversion to I = 0): 32.92
LogK2.31 nm−2 (SSD-normalized): 33.37
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.01 mol/L
NaCl
|
Fit Method: |
FITEQL |
Comment: |
original reaction equation in the study: »Fe-OH + H3AsO3 = »Fe-HAsO3<1-> + H<1+> + H2O with logK = -2.27, formation constant in aqueous solution: H3AsO3 = AsO3<3-> + 3H<1+> with logK = -34.7 [MBK00] |
|