RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Quartz
Reference: DK01
SCM Type: NE - Non-electrostatic
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Si(s)-OH
Equation: »Si(s)-OH + UO2<2+> + H2O  ⇔  »Si(s)-O-UO2(OH) + 2 H<1+>
LogK: -2.56        LogK°I=0 (Conversion to I = 0):   -2.56
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L NaNO3
pH Range: <6
Fit Method: FITEQL
Comment: apparent stability constant for I=0, for conversion to other ionic strengths, activity constants of all surface species are assumed equal to one; no electrical double layer correction to the mass laws for charged surface species; fit with U(VI) adsorption data [KD01] over the entire pH range and the thermodynamic set in table 2-1 of [DKP01]; termed model B4; fit for pH<6 and: and thermodynamic set of (KCKD96) : also log K=-2.56 (without formation of ternary surface complex, termed model B2) cited in [K02b]
 
1 data sets were retrieved