RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: MZST95
SCM Type: TL - Triple Layer
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Al-OH
Equation: »Al-OH + UO2<2+>  ⇔  »Al-O-UO2<1+> + H<1+>
LogK: 7.1         LogK2.31 nm−2 (SSD-normalized):   5.49
Experiment: Batch Sorption Experiments
Ionic Strength: NaClO4
Temperature: 298.15 K
Solid/Liquid Ratio: 0.5 g/L
pH Range: 4-8.5
Ligand Concentration Range: 8.4E-6 mol/L
Fit Method: FITEQL
Comment: ionic strengths: 0.001, 0.01 and 0.1 M; ion exchange reactions: UO2<2+> + 2X<-> = UO2X2 (logK=30.9), UO2(OH)<+> + X<-> = UO2(OH)X (logK=8.6), (UO2)3(OH)5<+> + X<-> = (UO2)3(OH)5X (logK=-1.75)
 
1 data sets were retrieved