RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Kaolinite
Reference: SKLL09
SCM Type: DDL - Diffuse Double Layer
Ligand: Cd<2+> - cadmium
Site Type: »X-OH
Equation: »X-OH + Cd<2+>  ⇔  »X-O-Cd<1+> + H<1+>
LogK: -6.4        LogK°I=0 (Conversion to I = 0):   -6.22         LogK2.31 nm−2 (SSD-normalized):   -6.59
Experiment: Batch Sorption Experiments
Ionic Strength: 0.02 mol/L NaNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 2.0 g/L
pH Range: 3 - 10
Ligand Concentration Range: 1E-4 - 1E-6 mol/L
Fit Method: FITEQL
Comment: Monodentate variable charge + ion exchange site:
2X(Na) + Cd<2+> = X2(Cd) + 2Na<1+> with log K = 3.9;
X(Na) + H<1+> = X(H) + Na<1+> with log K = 2.5;

Supplementary Material, Table S5
 
1 data sets were retrieved