RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Goethite
Reference: DW14
SCM Type: DDL - Diffuse Double Layer
Ligand: Al<3+> - aluminum
Site Type: »Fe-OH
Equation: »Fe-OH<0.5-> + Al<3+> + 2 H2O  ⇔  (»Fe-OH)-Al(OH)2<0.5+> + 2 H<1+>
LogK: -0.61        LogK°I=0 (Conversion to I = 0):   0.14         LogK2.31 nm−2 (SSD-normalized):   0.33
Experiment: Potentiometric Titration
Ionic Strength: 0.1 mol/L NaNO3
Temperature: 298.0 K
Solid/Liquid Ratio: 11.0 g/L
pH Range: 3-6
Ligand Concentration Range: 0.00032 mol/L
Fit Method: PHREEQC
Comment: log K estimated from [LSS90] by converting their two-pK (protonation-deprotonation) model to one-pK model; only valid in combination with other surface reactions and constants (see article)
 
1 data sets were retrieved