RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: TOS14
SCM Type: NE - Non-electrostatic
Ligand: Am<3+> - americium
Site Type: »X-OH
Equation: »X-OH + Am<3+> + 2 CO3<2->  ⇔  »X-O-Am(CO3)2<2-> + H<1+>
LogK: 10.4        LogK°I=0 (Conversion to I = 0):   12.11         LogK2.31 nm−2 (SSD-normalized):   13.08
Experiment: Mean of Different Sources
Ionic Strength: 0.1 mol/L
pH Range: 3-11
Fit Method: FITEQL
Comment: "The equilibrium constants derived from individual optimization runs using a total of six data-sets from [G94b] and [MBB08] were averaged".

Data of [MBB08] were measured for the sorption of Eu(III) on Na-montmorillonite, chemical analogy between Am(III) and Eu(III) is assumed.
Ion exchange reaction: 3ZNa + Am<3+> = Z3Am + 3Na<1+> with log K = 2.05
 
1 data sets were retrieved