Investigation of uranyl ions complexing

Spatial distribution of uranium in anionite VP-1AP grains during elevated auc sorption from carbonate media is investigated by the X-ray microanalysis. The form of the concentration profile in the grain depth varies from uniform after the first sorption and alkaline treatment then meniscus during the repeated sorption with 1-3 h phase contact time to volume in a grain after 4 h of contract. In this case the nonuniformity coefficient of uranium distribution in grains increases from 0.026 to 0.045. Capacity on uranium determined in regions along the grain diameter after alkaline treatment of saturated sorbent and repeated uranium sorption from carbonate solutions increases practically two times