Reprocessing of spent nuclear fuel usually employs the solvent extraction technique to recover fissile
material, isolate other valuable radionuclides, recover precious metals, and remove contaminants. Effi cient recovery
of these species from highly radioactive solutions requires a detailed understanding of reaction conditions and
metal speciation that leads to their isolation in pure forms. Due to the complex nature of these systems, identification of ideal reaction conditions for the efficient extraction of specific metals can be challenging. Thus, the
development of experimental approaches that have the potential to reduce the number of experiments required
to identify ideal conditions are desirable. In this study, a full-factorial experimental design was used to identify
the main effects and variable interactions of three chemical parameters on the extraction of protactinium (Pa).
Specifi cally we investigated the main effects of the anion concentration (NO3
–, Cl–) extractant concentration, and
solution acidity on the overall extraction of protactinium by 2,6-dimethyl-4-heptanol (diisobutylcarbinol; DIBC)
from both HCl and HNO3 solutions. Our results indicate that in HCl, the extraction of protactinium was dominated
by the solution acidity, while in nitric acid the extraction was strongly effected by the [DIBC]. Based on
our results, a mathematical model was derived, that describes the relationship between concentrations of anions,
extractant, and solution acidity and the expected values of Pa distribution coefficients in both HCl and HNO3.
This study demonstrates the potential to predict the distribution coefficient values, based upon a mathematical
model generated by a full-factorial experimental design.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00