Mineral: |
Goethite |
Reference: |
MG96b |
SCM Type: |
CC - Constant Capacitance |
Ligand: |
AsO4<3->
- arsenate
|
Site Type: |
»Fe-OH |
Equation: |
»Fe-OH + AsO4<3-> + 3 H<1+> ⇔ »Fe-H2AsO4 + H2O |
LogK: |
29.02 LogK°I=0 (Conversion to I = 0): 30.30
LogK2.31 nm−2 (SSD-normalized): 33.70
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
296.15 K |
Solid/Liquid Ratio: |
2.5 g/L |
pH Range: |
2.5-11 |
Ligand Concentration Range: |
2.66E-4 mol/L |
Fit Method: |
FITEQL |
Comment: |
one-site approach (monodentate only); original reaction equation in the study: »Fe-OH + H3AsO4 = »Fe-H2AsO4 + H2O with logK = 8.4, formation constant in aqueous solution: AsO4<3-> + 3 H<+> = H3AsO4<0> logK = 20.62 [GFFGN03] |
|