RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Kaolinite
Reference: SSA05
SCM Type: ECC - Extended Constant Capacitance
Ligand: Pb<2+> - lead
Site Type: »X-OH
Equation: »X-OH + Pb<2+> + H2O  ⇔  »X-O-Pb(OH) + 2 H<1+>
LogK: -16.36        LogK°I=0 (Conversion to I = 0):   -16.27         LogK2.31 nm−2 (SSD-normalized):   -16.77
Experiment: Batch Sorption Experiments
Ionic Strength: 0.01 mol/L NaNO3
Temperature: 295.0 K
Solid/Liquid Ratio: 6.69 g/L
pH Range: 3.5-10
Ligand Concentration Range: 1.33E-4 mol/L
Fit Method: GRFIT
Comment: original equation in the study: >SOH + PbOH+ = >SOPb(OH) + H+ with log K = -8.65, hydrolysis reaction from [BM76];
only valid in combination with ion exchange reaction: 2>XNa + Pb2+ = >X2Pb + 2Na+ with log K = 4.28
 
1 data sets were retrieved