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: 2 »X-OH + Cd<2+>  ⇔  (»X-O)2-Cd + 2 H<1+>
LogK: -8.0        LogK°I=0 (Conversion to I = 0):   -7.96         LogK2.31 nm−2 (SSD-normalized):   -8.38
Experiment: Batch Sorption Experiments
Ionic Strength: 0.002 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: Bidentate variable charge + ion exchange site:
2X(Na) + Cd<2+> = X2(Cd) + 2Na<1+> with log K = 3.5;
X(Na) + H<1+> = X(H) + Na<1+> with log K = 2.1;

Supplementary Material, Table S5
 
1 data sets were retrieved