RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: amorphous Silica
Reference: KLW04
SCM Type: DDL - Diffuse Double Layer
Ligand: Al<3+> - aluminum
Site Type: »X-OH
Equation: »X-OH + Al<3+> + H2O  ⇔  »X-O-Al(OH)<1+> + 2 H<1+>
LogK: -3.0        LogK°I=0 (Conversion to I = 0):   -2.25         LogK2.31 nm−2 (SSD-normalized):   0.29
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L KNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 1.0 g/L
pH Range: 1-7
Ligand Concentration Range: 1E-4 mol/L
Fit Method: MINTEQA2
Comment: 1 × 10−4 M Al(III)/SiO 2(s) system; SCM/SPM; log K intPS = −4.8 (intrinsic equilibrium constant for Al(III) precipitation)
 
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