RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Bentonite
Reference: ZLQWW16
SCM Type: DDL - Diffuse Double Layer
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Al-OH
Equation: »Al-OH + UO2<2+>  ⇔  »Al-O-UO2<1+> + H<1+>
LogK: -4.25        LogK°I=0 (Conversion to I = 0):   -3.93         LogK2.31 nm−2 (SSD-normalized):   -1.55
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaCl
Temperature: 295.0 K
Solid/Liquid Ratio: 1.0 g/L
pH Range: 2-8
Ligand Concentration Range: 1E-4 mol/L
Fit Method: MINTEQ
Comment: also ion exchange: 2»XNa + UO2<2+> = (»X)2UO2 + 2H<1+> with log K = -0.35; presence of fulvic acid: »AlOH + HFA + UO2<2+> = »AlOUO2HFA<2+>, log K = 9.30
 
1 data sets were retrieved