RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Magnetite
Reference: LBSSV10
SCM Type: NE - Non-electrostatic
Ligand: Pu<4+> - plutonium(IV)
Site Type: »Fe-OH
Equation: »Fe-OH + Pu<4+> + 4 H2O  ⇔  »Fe-O-Pu(OH)4<1-> + 5 H<1+>
LogK: -12.74        LogK°I=0 (Conversion to I = 0):   -12.74         LogK2.31 nm−2 (SSD-normalized):   -8.08
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: 1E-10 mol/L
Fit Method: Unknown
Comment: original equation in the study: »Fe-O<1-> + Pu(OH)4 = »Fe-O-Pu(OH)4<1-> with logK = 6.81 (K1 = 6.43E+6 L/mol) (Pu<4+> + 4H2O = Pu(OH)4 + 4H<1+> with logK = -8.5 given in NEA-TDB); also an ion exchange reaction given: »XH + Pu(OH)3<1+> = »XPu(OH)3 + H<1+> with logK = 1.56
 
1 data sets were retrieved