Mineral: |
Goethite |
Reference: |
G86a |
SCM Type: |
CC - Constant Capacitance |
Ligand: |
AsO4<3->
- arsenate
|
Site Type: |
»Fe-OH |
Equation: |
»Fe-OH + AsO4<3-> + 2 H<1+> ⇔ »Fe-HAsO4<1-> + H2O |
LogK: |
27.14 LogK°I=0 (Conversion to I = 0): 28.32
LogK2.31 nm−2 (SSD-normalized): 31.69
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
296.15 K |
Solid/Liquid Ratio: |
4.64 g/L |
pH Range: |
3.5-12 |
Ligand Concentration Range: |
5.34E-4 mol/L |
Fit Method: |
FITEQL |
Comment: |
experimental raw data from [H70]; original reaction equation in the study: »Fe-OH + H3AsO4 = »Fe-HAsO4<1-> + H<1+> + H2O with logK = 6.52, formation constant in aqueous solution: AsO4<3-> + 3 H<+> = H3AsO4<0> logK = 20.62 [GFFGN03] |
|