Mineral: |
Calcite |
Reference: |
SPJL11 |
SCM Type: |
CC - Constant Capacitance |
Ligand: |
Ca<2+>
- calcium
|
Site Type: |
»Ca(w)-CO3<1-> |
Equation: |
»Ca(w)-CO3<1-> + Ca<2+> + PO4<3-> + H<1+> ⇔ »Ca(w)-HPO4-Ca<1+> + CO3<2-> |
LogK: |
13.489 LogK°I=0 (Conversion to I = 0): 13.49
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.0 mol/L
|
Solid/Liquid Ratio: |
100.0 g/L |
pH Range: |
6.5 - 9.1 |
Ligand Concentration Range: |
1.3E-7 - 5E-5 mol/L |
Fit Method: |
PHREEQC |
Comment: |
model 1; original equation in the study: »Ca(w)CO3<1-> + CaHPO4<0> = »Ca(w)HPO4Ca<1+> + CO3<2-> with log K = -1.75±0.07 (Equilibrium constants for aqueous speciation of phosphate taken from wateq4f database (Parkhurst and Appelo, 1999): Ca<2+> + HPO4<2-> = CaHPO4<0>, log K = 2.739; H<1+> + PO4<3-> = HPO4<2->, log K = 12.5±0.03) |
|