RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: WDPWX94
SCM Type: DDL - Diffuse Double Layer
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Fe(w)-OH
Equation: »Fe(w)-(OH) + UO2<2+> + CO3<2->  ⇔  »Fe(w)-O2-UO2CO3<2-> + 2 H<1+>
LogK: 0.42        LogK°I=0 (Conversion to I = 0):   0.42         LogK2.31 nm−2 (SSD-normalized):   3.88
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L NaNO3
pH Range: 3.5-9
Fit Method: FITEQL
Comment: extrapolation to infinite dilution gives log K = 0.22; fit of sorption data in the pH range 6.5-9 after determining constants in the pH range 4-6; pCO2: air - 1%
 
1 data sets were retrieved