RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Hematite
Reference: QHS96
SCM Type: TL - Triple Layer
Ligand: Th<4+> - thorium
Site Type: »Fe-OH
Equation: »Fe-OH + Th<4+>  ⇔  »Fe-O-Th<3+> + H<1+>
LogK: 21.2        LogK°I=0 (Conversion to I = 0):   22.81         LogK2.31 nm−2 (SSD-normalized):   22.14
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaClO4
Fit Method: HYDRAQL
Comment: insensitivity of fractional Th sorption to changes in ionic strength -> indicates formation of inner-sphere surface complexes; isotherm for Th(IV) sorption on hematite shows Langmuirian behavior; Th sorption was irreversible within the time frame of the experiment (95 h)
 
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