RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Nontronite
Reference: JLDBF08
SCM Type: NE - Non-electrostatic
Ligand: Fe<2+> - iron(II)
Site Type: »X-OH
Equation: »X-OH + Fe<2+>  ⇔  »X-O-Fe<1+> + H<1+>
LogK: 4.1         LogK2.31 nm−2 (SSD-normalized):   8.17
Experiment: Batch Sorption Experiments
Ionic Strength: NaClO4
Temperature: 303.15 K
Solid/Liquid Ratio: 1.3 g/L
pH Range: 2.6 - 10.8
Ligand Concentration Range: 3.3E-4 mol/L
Fit Method: Geochemist’s Workbench
Comment: 0.01, 0.1 or 0.5 M NaClO4

also ion exchange modeled:
2Na-X + Fe<2+> = Fe-X2 + 2Na<1+>, log K Ex1 = 1.3
Na-X + FeOH<1+> = FeOH-X + Na<1+>, log K Ex2 = 4.4
 
1 data sets were retrieved