RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: PKKDR18
SCM Type: NE - Non-electrostatic
Ligand: Eu<3+> - europium(III)
Site Type: »X(s)-OH
Equation: »X(s)-OH + Eu<3+> + CO3<2->  ⇔  »X(s)-O-EuCO3 + H<1+>
LogK: 7.97        LogK°I=0 (Conversion to I = 0):   9.25
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaCl
Temperature: 298.0 K
Solid/Liquid Ratio: 1.0 g/L
pH Range: 3-9
Ligand Concentration Range: 1.5E-6 mol/L
Fit Method: FITEQL
Comment: 2SPNE (2 sites protolysis with no electrostatic term) model (DDL without electrostatics); ion exchange: 3(≡XNa) + Eu3+ <=> ≡X3Eu + 3Na+ with logK = 8.32, (≡XNa) + Eu3+ + SO42- <=> ≡XEuSO4 + 3Na+ with logK = 6.19
 
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