RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Alumina
Reference: GYXW09
SCM Type: DDL - Diffuse Double Layer
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Al-OH
Equation: »Al-OH + UO2<2+> + PO4<3->  ⇔  »Al-O-UO2HPO4<1->
LogK: 8.2398         LogK2.31 nm−2 (SSD-normalized):   6.85
Ionic Strength:
Temperature: 298.15 K
Ligand Concentration Range: 2.61E-5 (U(VI)); 7.50E-5 (phosphate) mol/L
Fit Method: PHREEQC
Comment: original equation in the article: »X-OH + UO2HPO4 = »X-O-UO2HPO4<1-> + H<1+>, logK = -0.2; data from the llnl database accompanied with the code PHREEQC were used for the conversion of the reaction equation; S/L ratio 2 and 10 g/L; IS was 0.01, 0.05, 0.1 and 0.5 mol/L NaCl or 0.1 mol/L NaNO3; pH sorption edge of U(VI) in the presence of phosphate; sorption isotherm of U(VI) in the presence of phosphate; sorption isotherm of phosphate in the presence of U(VI)
 
1 data sets were retrieved