RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	amorphous Silica
Reference:	KKT12
SCM Type:	DDL - Diffuse Double Layer
Ligand:	UO2<2+> - uranyl(VI)
Site Type:	»Si-OH
Equation:	»SiOH + 3 UO2<2+> + 5 H2O ⇔ »SiO-(UO2)3(OH)5 + 6 H<1+>
LogK:	-32.09 LogK°_I=0 (Conversion to I = 0): -31.45
Experiment:	Batch Sorption Experiments
Ionic Strength:	0.1 mol/L NaClO4
Temperature:	298.15 K
Solid/Liquid Ratio:	5.0 g/L
Ligand Concentration Range:	4.47E-04 mol/L
Fit Method:	FITEQL
Comment:	mononuclear monodentate binding of U(VI) with silica sites (model1); original reaction equation given as »SiOH + (UO2)3(OH)5<1+> = »SiO(UO2)3(OH)5 + H<1+>, logK = -16.69; WSOS/DF = 4.25

1 data sets were retrieved