RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Smectite
Reference: MAGAL09
SCM Type: NE - Non-electrostatic
Ligand: UO2<2+> - uranyl(VI)
Site Type: »X(w)-OH
Equation: »X(w)-OH + UO2<2+> + H2O  ⇔  »X(w)-O-UO2(OH) + 2 H<1+>
LogK: -5.8
Experiment: Batch Sorption Experiments
Ionic Strength: NaClO4
Temperature: 298.15 K
pH Range: 3-11
Ligand Concentration Range: 1E-8 - 1E-3 mol/L
Fit Method: CHESS
Comment: Ionic strength varied from 0.001 to 0.1 M and S/L ratio from 1 to 6 g/L; ion exchange 2»XNa + UO22+ = »X2UO2 + 2Na+ with logK = 0.28; equilibrium acidity constants from [MAG09a]
 
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