RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Illite
Reference:	EPH13
SCM Type:	NE - Non-electrostatic
Ligand:	UO2<2+> - uranyl(VI)
Site Type:	»X(s)-OH
Equation:	»X(s)-OH + UO2<2+> + 3 H2O ⇔ »X(s)-O-UO2(OH)3<2-> + 4 H<1+>
LogK:	-19.8
Experiment:	Batch Sorption Experiments
Ionic Strength:	ground water
Solid/Liquid Ratio:	2.5 g/L
pH Range:	7 - 10
Ligand Concentration Range:	1E-8 mol/L
Fit Method:	PHREEQC
Comment:	Modeling was started from uranium surface reactions obtained from modeling kaolinite and applied to OLSR, parameters were reoptimized for illite; parameters and surface species of best fit from OLSR were applied to ALLMR water UO2<2+> cation exchange was not considered because the study was at the pH range 7 to 10 and its contribution is found to be negligent by Bradbury and Baeyens (2009) in their study

1 data sets were retrieved