RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: SIT21
SCM Type: NE - Non-electrostatic
Ligand: Sr<2+> - strontium
Site Type: »X(w2)-OH
Equation: »X(w2)-OH + Sr<2+>  ⇔  »X(w2)-O-Sr<1+> + H<1+>
LogK: -6.5        LogK°I=0 (Conversion to I = 0):   -6.50
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L
pH Range: 4.4 - 12.6
Ligand Concentration Range: 9.4E-5; 9.2E-5 mol/L
Fit Method: PHREEQC
Comment: S/L ratio: 42, 172 g/L;

cation exchange and surface complexation combined
(2XNa + Sr2+ = X2Sr + 2Na+ with log K = 0.65 (I ≤ 0.1 M), log K = 1.1 (I = 0.5 M);
XNa + SrOH+ = XSrOH + Na+ with log K = 3.0 (I ≤ 0.1 M), log K = 3.2 (I = 0.5 M))
 
1 data sets were retrieved