RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: MBDSB12
SCM Type: NE - Non-electrostatic
Ligand: UO2<2+> - uranyl(VI)
Site Type: »X(s)-OH
Equation: »X(s)-OH + UO2<2+> + CO3<2->  ⇔  »X(s)-O-UO2CO3<1-> + H<1+>
LogK: 9.8        LogK°I=0 (Conversion to I = 0):   10.55
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaClO4
Temperature: 298.15 K
Ligand Concentration Range: 9E-08 mol/L
Fit Method: MINSORB
Comment: experiments under atmospheric conditions (pCO2 = 1E-3.5 bar, pH: 4-10, S:L ratio = 2.5 g/L) and at higher pCO2 (1,3 and 5 mM NaHCO3, pH: 7-9.2, S:L ratio = 4.3 g/L); 2SPNE SC/CE model; SSD and pK values from [BB97b]
 
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