Mineral: |
Kaolinite |
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: |
31.66 LogK°I=0 (Conversion to I = 0): 32.94
LogK2.31 nm−2 (SSD-normalized): 34.74
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
296.15 K |
Fit Method: |
FITEQL |
Comment: |
optimizing of all logK while pK were constant; temperature 23+-1°C; check equation & coefficients; original reaction equation in the study: »Al-OH + H3AsO4 = »Al-H2AsO4 + H2O with logK = 11.04, formation constant in aqueous solution: AsO4<3-> + 3 H<+> = H3AsO4<0> logK = 20.62 [GFFGN03] |
|