RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Gibbsite
Reference: K97c
SCM Type: DDL - Diffuse Double Layer
Ligand: SO4<2-> - sulfate
Site Type: »Al-OH
Equation: »Al-OH + SO4<2-> + H<1+>  ⇔  »Al-OH2-SO4<1->
LogK: 6.85 ± 0.057         LogK°I=0 (Conversion to I = 0):   6.85         LogK2.31 nm−2 (SSD-normalized):   5.46
Experiment: Potentiometric Titration
Ionic Strength: 0.0 mol/L NaNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 14.6 g/L
pH Range: 3.5-7
Ligand Concentration Range: 1.72E-4 mol/L
Fit Method: FITEQL
Comment: model C with two surface groups; model results should be treated cautiously (acidity constants had to be assumed)
 
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