Mineral: |
Goethite |
Reference: |
CRCO08 |
SCM Type: |
TL - Triple Layer |
Ligand: |
Sr<2+>
- strontium
|
Site Type: |
»Fe-OH |
Equation: |
4 »Fe-OH + Sr<2+> + H2O ⇔ (»Fe-OH)2 (»Fe-O)2-SrOH<1-> + 3 H<1+> |
LogK: |
24.9 LogK°I=0 (Conversion to I = 0): 25.01
LogK2.31 nm−2 (SSD-normalized): 28.65
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaNO3
|
Temperature: |
298.13 K |
Solid/Liquid Ratio: |
10.0 g/L |
pH Range: |
4-10 |
Ligand Concentration Range: |
1E-3 - 1E-6 mol/L |
Fit Method: |
FITEQL |
Comment: |
calulated value equ. 1 according [S05] 1. 4 »Fe-O<1-> + Sr<2+> + H2O = (»Fe-OH)2 (»Fe-O)2-SrOH<1-> + 2 H<1+> logK = 31.3 2. »Fe-OH = »Fe-O<1-> + H<1+> pK2 = -logK = 6.4 3. sum 4 »Fe-OH + Sr<2+>+H2O = »Fe-OH)2 (»Fe-O)2-SrOH<1->+3 H<1+> logK= 31.3 - 6.4 = 24.9 |
|