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: »Al-OH
Equation: »Al-OH + Eu<3+>  ⇔  »Al-O-Eu<2+> + H<1+>
LogK: 1.2        LogK°I=0 (Conversion to I = 0):   1.90         LogK2.31 nm−2 (SSD-normalized):   4.04
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
 
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