RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: ZB04a
SCM Type: NE - Non-electrostatic
Ligand: NpO2<1+> - neptunyl(V)
Site Type: »Fe-OH
Equation: »Fe-OH + NpO2<1+> + H2O  ⇔  »Fe-OH-NpO3<1-> + 2 H<1+>
LogK: -11.26        LogK°I=0 (Conversion to I = 0):   -11.37         LogK2.31 nm−2 (SSD-normalized):   -10.32
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L
Temperature: 298.15 K
Ligand Concentration Range: 4.5E-13 -4.5E-11. 4.7E-12. 6E-06 mol/L
Fit Method: FITEQL
Comment: average non-electrostatic SC constant of 10 curves from [GASM91] (sorption on Fe(OH)3) and [NS91] (sorption on FeOOH); the log K of >FeOHNpO3<1-> varied significantly --> as a conservative estimate, the lowest fitted log K constant was used
 
1 data sets were retrieved