RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Calcite
Reference: SPJL11
SCM Type: CC - Constant Capacitance
Ligand: Ca<2+> - calcium
Site Type: »Ca(s)-CO3<1->
Equation: »Ca(s)-CO3<1-> + Ca<2+> + PO4<3->  ⇔  »Ca(s)-PO4-Ca<0> + CO3<2->
LogK: 8.669        LogK°I=0 (Conversion to I = 0):   8.67
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(s)CO3<1-> + CaPO4<1-> = »Ca(s)PO4Ca<0> + CO3<2-> with log K = 2.21±0.03 (Equilibrium constants for aqueous speciation of phosphate taken from wateq4f database (Parkhurst and Appelo, 1999): Ca<2+> + PO4<3-> = CaPO4<1->, log K = 6.459)
 
1 data sets were retrieved