RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Illite
Reference: WMDV98
SCM Type: DDL - Diffuse Double Layer
Ligand: Eu<3+> - europium(III)
Site Type: »X-OH
Equation: »X-OH + Eu<3+>  ⇔  »X-O-Eu<2+> + H<1+>
LogK: 2.13 ± 0.07         LogK°I=0 (Conversion to I = 0):   3.21         LogK2.31 nm−2 (SSD-normalized):   6.51
Experiment: Batch Sorption Experiments
Ionic Strength: 0.5 mol/L NaClO4
pH Range: 3-7.5
Fit Method: FITEQL
Comment: glove box; at low pH sorption relatively pH independent due to the ion exchange; at higher pH sharp sorption edge represented the surface complexation reaction; ion exchange: 3=XO-Na + Eu3+ = =X-Eu + 3Na+, logK=11.4(0.5M), 10.96(0.2M)
 
1 data sets were retrieved