Mineral: |
Bentonite |
Reference: |
CJGMW14 |
SCM Type: |
DDL - Diffuse Double Layer |
Ligand: |
PO4<3->
- phosphate
|
Site Type: |
»Al-OH |
Equation: |
»Al-OH + PO4<3-> + 2 H2O ⇔ »Al-H2-PO4 + 3OH<1-> |
LogK: |
-13.788 LogK°I=0 (Conversion to I = 0): -12.82
LogK2.31 nm−2 (SSD-normalized): -15.39
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
295.0 K |
Ligand Concentration Range: |
2E-5; 2E-4 mol/L |
Fit Method: |
PHREEQC |
Comment: |
Model 1 and Model 2; S/L ratio = 0.5, 1, 3 g/L; original equation in the article: »Al-OH + H2PO4<1-> = »Al-H2-PO4 + OH<1-> with logK = -5.35, conversion on the basis of logK values from the Nagra/PSI Chemical Thermodynamic Data Base
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