RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Quartz
Reference: CSB18
SCM Type: DDL - Diffuse Double Layer
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Si-OH
Equation: 2 »Si-OH + UO2<2+> + CO3<2->  ⇔  (»Si-OH)2-UO2CO3
LogK: 16.943        LogK°I=0 (Conversion to I = 0):   17.30
Experiment: Batch Sorption Experiments
Ionic Strength: 0.01 mol/L NaCl
Temperature: 298.0 K
Solid/Liquid Ratio: 2.5 g/L
pH Range: 3-10
Ligand Concentration Range: 4.2E-4 mol/L
Fit Method: PHREEQC
Comment: only valid in combination with other surface reactions and constants (see article); original equation in the study: 2 »Si-OH + UO2<2+> + CO2 + H2O = (»Si-OH)2-UO2CO3 + 2H<1+> with log K = 0.26
 
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