RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Bentonite
Reference:	HM10
SCM Type:	DDL - Diffuse Double Layer
Ligand:	Eu<3+> - europium(III)
Site Type:	»Si-OH
Equation:	»SiOH + Eu<3+> + 2 H2O ⇔ »SiO-Eu(OH)2 + 3 H<1+>
LogK:	-16.5 LogK°_I=0 (Conversion to I = 0): -15.98
Experiment:	Batch Sorption Experiments
Ionic Strength:	0.053 mol/L ground water
Temperature:	293.15 K
Solid/Liquid Ratio:	4.0 g/L
pH Range:	2 - 12
Ligand Concentration Range:	1E-5 mol/L
Fit Method:
Comment:	also ion exchange reactions given in the study: 3»XNa + Eu<3+> = »X3Eu + 3Na with logK = 6.5 and 2»XNa + Eu<3+> + H2O = »X2EuOH + H<1+> + 2Na<1+> with logK = -2.0

1 data sets were retrieved