RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Goethite
Reference: LBSSV10
SCM Type: NE - Non-electrostatic
Ligand: Am<3+> - americium
Site Type: »Fe-OH
Equation: »Fe-OH + Am<3+> + 2 H2O  ⇔  »Fe-O-Am(OH)2 + 3 H<1+>
LogK: -20.18        LogK°I=0 (Conversion to I = 0):   -20.18         LogK2.31 nm−2 (SSD-normalized):   -15.70
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L NaNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 1.0 g/L
Ligand Concentration Range: 3E-11 mol/L
Fit Method: Unknown
Comment: original equation in the study: »Fe-O<1-> + Am(OH)<2+> = »Fe-O-Am(OH)<1+> with logK = 5.97 (K1 = 9.44E+5 L/mol) (Am<3+> + 2H2O = Am(OH)2<1+> + 2H<1+> with logK = -15.10 given in NEA-TDB); also an ion exchange reaction given: 2»XH + AmNO3<2+> = »X2AmNO3 + 2H<1+> with logK = -2.32
 
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