RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	amorphous Silica
Reference:	KTGM11
SCM Type:	DDL - Diffuse Double Layer
Ligand:	Eu<3+> - europium(III)
Site Type:	»Si-OH
Equation:	2 »SiOH + Eu<3+> + 2 Si(OH)4<0> ⇔ (»SiO)2-Eu(OSi(OH)3)2<1-> + 4 H<1+>
LogK:	-33.09 LogK°_I=0 (Conversion to I = 0): -32.55
Experiment:	Batch Sorption Experiments
Ionic Strength:	0.1 mol/L NaClO4
Temperature:	298.15 K
Solid/Liquid Ratio:	10.0 g/L
pH Range:	4 - 8
Ligand Concentration Range:	5E-5 mol/L
Fit Method:	FITEQL
Comment:	original equation in the article: 2 »SiOH + Eu<3+> + 2 SiO(OH)3<1-> = (»SiO)2-Eu(OSi(OH)3)2<1-> + 2 H<1+> with logK = -14.09; Si(OH)4<0> = SiO(OH)3<1-> + H<1+> with logK = -9.5 [SM96a]

1 data sets were retrieved