Mineral: |
Gibbsite |
Reference: |
G86a |
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: |
27.21 LogK°I=0 (Conversion to I = 0): 28.49
LogK2.31 nm−2 (SSD-normalized): 29.79
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
293.15 K |
Solid/Liquid Ratio: |
2.12 g/L |
pH Range: |
3.5-10 |
Ligand Concentration Range: |
2.7E-4 mol/L |
Fit Method: |
FITEQL |
Comment: |
experimental raw data from [HPQ71]; constant for the ternary system with PO4<3->; original reaction equation in the study: »Al-OH + H3AsO4 = »Al-H2AsO4 + H2O with logK = 6.59, formation constant in aqueous solution: H3AsO4 = AsO4<3-> + 3H<1+> with logK = -20.62 [GFFGN03] |
|