RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: NSHK21
SCM Type: DDL - Diffuse Double Layer
Ligand: Pb<2+> - lead
Site Type: »Fe(w)-OH
Equation: 2 »Fe(w)-OH + Pb<2+>  ⇔  »Fe(w)-OH-»Fe(w)-O-Pb<1+> + H<1+>
LogK: 1.39 ± 0.04         LogK°I=0 (Conversion to I = 0):   1.71         LogK2.31 nm−2 (SSD-normalized):   4.85
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaNO3
Temperature: 298.15 K
pH Range: 4 - 9
Ligand Concentration Range: 1E-4; 9.85E-4; 2.51E-3 mol/L
Fit Method: FITEQL
Comment: U-DLM, CO2 free conditions; 3.6, 2.6 and 2.0 g/L ferrihydrite
 
1 data sets were retrieved