RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Goethite
Reference: SUG10
SCM Type: CC - Constant Capacitance
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Fe-OH
Equation: 2 »Fe-OH + UO2<2+>  ⇔  (»Fe-O)2-UO2 + 2 H<1+>
LogK: -4.36        LogK°I=0 (Conversion to I = 0):   -4.36         LogK2.31 nm−2 (SSD-normalized):   -2.49
Experiment: Not Specified
Ionic Strength: 0.0 mol/L NaNO3
Temperature: 298.15 K
pH Range: 3-9
Fit Method: MINEQL
Comment: equation (»Fe(OH)2 + UO2<2+> = FeO2UO2 + 2H<1+>) changed for RES³T because no site density given for »Fe(OH)2; conditional logKint values (I = 0.1 M) were extrapolated to the true logKint values (I = 0 M) using the Davies equation; equilibrium speciation in the presence of goethite was predicted using a modified version of a surface complexation model developed by [CBRZ04]
 
1 data sets were retrieved