Sorption of Pu(IV) on alumina microspheres prepared by the sol-gel procedure has been investigated for the recovery of plutonium
from nitric acid-oxalic acid solutions. Distribution ratio for Pu(IV) between alumina microspheres and nitric acid-oxalic
acid have been determined. The influence of the mode of preparation and heat treatment of these microspheres, on the sorption
of Pu(IV) have been investigated. Pu(IV) breakthrough capacities have been determined using a 5 ml bed of alumina with solutions
of Pu(IV) in 1M HNO3+0.05M H2C2O4 and 0.5M HNO3+0.05M H2C2O4. The elution behavior of Pu(IV) loaded on these microspheres were studied using nitric acid solutions containing different
oxidising and reducing agents. Investigations were also carried out to fix the activity in the alumina matrix by heat treatment.