RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: RSRGC09
SCM Type: DDL - Diffuse Double Layer
Ligand: Th<4+> - thorium
Site Type: »Fe-OH
Equation: 2 »Fe-OH + Th<4+>  ⇔  (»Fe-O)2-Th<2+> + 2 H<1+>
LogK: 8.19 ± 0.99         LogK°I=0 (Conversion to I = 0):   9.69         LogK2.31 nm−2 (SSD-normalized):   10.06
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaClO4
Temperature: 298.0 K
Solid/Liquid Ratio: 10.0 g/L
pH Range: 1-5
Ligand Concentration Range: 9.4E-7 mol/L
Fit Method: FITEQL
Comment: equilibrium contact time of 4 days; species =FeOThOH2+ provided essentially the same fitting as the bidentate complex; site protolysis data from [DM90] for DLM!
 
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