Mineral: |
Illite |
Reference: |
DLHJG09 |
SCM Type: |
TL - Triple Layer |
Ligand: |
Ca<2+>
- calcium
|
Site Type: |
»X-OH |
Equation: |
2 »X-OH<0.5-> + Ca<2+> ⇔ (»X-O)2-Ca<1-> + 2 H<1+> |
LogK: |
1.5 LogK°I=0 (Conversion to I = 0): 1.71
LogK2.31 nm−2 (SSD-normalized): 1.12
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.1 mol/L
NaCl
|
Temperature: |
298.15 K |
Solid/Liquid Ratio: |
39.94 g/L |
Ligand Concentration Range: |
1E-3 mol/L |
Fit Method: |
MINTEQ |
Comment: |
1 pK Triple Plane Model; SONa<0.5+> logK = -2.7, SOCl<0.5-> logK = 7.5 [GE07]; Table 2: species given as (»X-O)2-Ca but no balance possible in reaction equation with 2 »X-OH<0.5-> and Ca<2+>; also ion exchange reaction given: 2»X<1->·H<1+> + Ca<2+> = 2»X<1->·Ca<2+> + 2H<1+> with logK = 0.62 |
|