RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: amorphous Silica
Reference: PS08
SCM Type: ETL - Extended Triple Layer
Ligand: Yb<3+> - ytterbium
Site Type: »Si-OH
Equation: 2 »Si-OH + 2 »Si-O<1-> + Yb<3+> + 2 OH<1->  ⇔  (»Si-OH)2(»Si-O)2-Yb(OH)2<1->
LogK: 39.4        LogK°I=0 (Conversion to I = 0):   40.58
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaNO3
Solid/Liquid Ratio: 0.2 g/L
Ligand Concentration Range: 2E-5 mol/L
Fit Method: Unknown
Comment: calculated from the values of log*K0tet,MOH2+, log*K0mono,MOH2+, pHZPC, ΔpKnθ, Ns, As, and Cs using equations in Appendix A and refer to site-occupancy standard states; sorption data from [MDF99b]; wrong reaction equation corrected
 
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