Mineral: |
Calcite |
Reference: |
SPJL08 |
SCM Type: |
CC - Constant Capacitance |
Ligand: |
AsO4<3->
- arsenate
|
Site Type: |
»Ca(w)-CO3<1-> |
Equation: |
»Ca(w)-CO3<1-> + AsO4<3-> + H<1+> ⇔ »Ca(w)-HAsO4<1-> + CO3<2-> |
LogK: |
9.49 LogK°I=0 (Conversion to I = 0): 9.49
|
Experiment: |
Batch Sorption Experiments |
Ionic Strength: |
0.0 mol/L
|
pH Range: |
6 - 9 |
Ligand Concentration Range: |
6.7E-7 - 6.7E-6 mol/L |
Fit Method: |
PHREEQC |
Comment: |
4g of calcite in 13-20 mL solution; original equation in the study: »Ca(w)-CO3<1-> + H2AsO4<1-> = »Ca(w)-HAsO4<1-> + H<1+> + CO3<2-> with log K = -8.97 (Equilibrium constants for aqueous speciation of arsenate taken from Table 2) |
|