Mineral: |
Montmorillonite |
Reference: |
GG88b |
SCM Type: |
CC - Constant Capacitance |
Ligand: |
AsO4<3->
- arsenate
|
Site Type: |
»Al-OH |
Equation: |
»Al-OH + AsO4<3-> + 3 H<1+> ⇔ »Al-H2AsO4 + H2O |
LogK: |
27.74 LogK°I=0 (Conversion to I = 0): 29.02
LogK2.31 nm−2 (SSD-normalized):
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
296.15 K |
pH Range: |
9 |
Fit Method: |
FITEQL |
Comment: |
optimizing of all logK and pK simultaneously; temperature 23+-1°C; original reaction equation in the study: »Al-OH + H3AsO4 = »Al-H2AsO4 + H2O with logK = 7.12, formation constant in aqueous solution: AsO4<3-> + 3 H<+> = H3AsO4<0> logK = 20.62 [GFFGN03] |
|