RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Hematite
Reference: MF99
SCM Type: CC - Constant Capacitance
Ligand: La<3+> - lanthanum
Site Type: »Fe-OH
Equation: »Fe-OH + La<3+>  ⇔  »Fe-O-La<2+> + H<1+>
LogK: -0.8 ± 0.3         LogK°I=0 (Conversion to I = 0):   0.06         LogK2.31 nm−2 (SSD-normalized):   0.14
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaNO3
Fit Method: FITEQL
Comment: surface loading ratio R=[La3+]/[FeOH]total=0.4; only in combination with ºFeOH + La3+ + H2O = ºFeO-La(OH)+ + 2H+ and ºFeOH + La3+ + 2 H2O = ºFeO-La(OH)2 + 3H+
 
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