RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Hematite
Reference: ZB04a
SCM Type: NE - Non-electrostatic
Ligand: Am<3+> - americium
Site Type: »Fe-OH
Equation: »Fe-OH + Am<3+>  ⇔  »Fe-O-Am<2+> + H<1+>
LogK: 1.24 ± 0.43         LogK2.31 nm−2 (SSD-normalized):   2.18
Experiment: Batch Sorption Experiments
Ionic Strength: NaClO4
Temperature: 298.15 K
Solid/Liquid Ratio: 0.025 g/L
pH Range: 2-10
Ligand Concentration Range: 8E-09. 1.5E-09 mol/L
Fit Method: FITEQL
Comment: average non-electrostatic SC constant of 11 sets of batch sorption experiments on hematite from [C96]; 2 sources of hematite: commercial (SSA = 19 m²/g) and laboratory-synthesized (SSA = 8 m²/g); standard deviation relate to the differences in fitted logK constants from the various batch sorption data sets; IS ranges from 0.001 to 1 M; under relatively constant carbonate alkalinity (~5E-5 mol/L HCO3<1->)
 
1 data sets were retrieved