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
Original reaction equation: »X(s)-OH + UO2(CO3)2<2-> + H2O = »X(s)-O-UO2(OH) + 2CO3<2-> + 2 H<1+>, log K = -13.7 (speciation reaction (ANDRA 2009): UO2<2+> + 2 CO3<2-> = UO2(CO3)<2->, log K = 16.61) |