RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Alumina
Reference: ZB04b
SCM Type: NE - Non-electrostatic
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Al-OH
Equation: »Al-OH + UO2<2+>  ⇔  »Al-O-UO2<1+> + H<1+>
LogK: 3.13 ± 0.15         LogK2.31 nm−2 (SSD-normalized):   1.74
Experiment: Batch Sorption Experiments
Ionic Strength:
Temperature: 298.15 K
Ligand Concentration Range: 4.84E-07. 2.1E-07. 8.5E-06 mol/L
Fit Method: FITEQL
Comment: average non-electrostatic SC constant for aluminosilicates of 5 curves from [AOTKA82], [TZMS96] and [PTBP98]; standard deviation relate to the differences in fitted logK constants from the various batch sorption data sets; IS was 0.00, 0,01 and 0.1 M; surface complexation to aluminosilicate >SiOH or >AlOH reactive sites is considered equivalent to the reactivity of aluminum oxide and silica reactive sites.
 
1 data sets were retrieved