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+>  ⇔  »X-O-Al<2+> + H<1+>
LogK: 0.5        LogK°I=0 (Conversion to I = 0):   1.36         LogK2.31 nm−2 (SSD-normalized):   3.79
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; 1E-3 mol/L
Fit Method: MINTEQA2
Comment: same log K for 1 × 10−4 M Al(III)/SiO 2(s) system and 1 × 10−3 M Al(III)/SiO 2(s) system; also log K for surface precipitation given
 
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