RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Illite
Reference: GE07
SCM Type: CC - Constant Capacitance
Ligand: Pb<2+> - lead
Site Type: »X-Na
Equation: »X-Na + Pb<2+> + H2O  ⇔  »X-Pb(OH) + 2 Na<1+>
LogK: -1.86        LogK°I=0 (Conversion to I = 0):   -1.43         LogK2.31 nm−2 (SSD-normalized):   2.73
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 2.97 g/L
pH Range: 3-9
Ligand Concentration Range: 4.96E-5 mol/L
Fit Method: FITEQL
Comment: ion exchange on the surface site; given equation: =XH + Pb<2+>+ H2O = =XPbOH + 2H<1+>: logK=-3.44, results with the protolysis parameter of =XNa (1.58) in logK=-3.44 + 1.58=-1.86; no value for 0.001 M
 
1 data sets were retrieved