Yj. Shin et al., PRECIPITATION BEHAVIOR OF URANIUM IN MULTICOMPONENT SOLUTION BY OXALIC-ACID, Journal of radioanalytical and nuclear chemistry, 209(1), 1996, pp. 217-223
A study on the precipitation of uranium by oxalic acid was carried out
in a multicomponent solution. The precipitation method is usually app
lied to the treatment of radioactive waste and the recovery of uranium
from a uranium-scrap contaminated with impurities. In these cases, th
e problem is how to increase the precipitation yield of target element
and to prevent impurities from coprecipitation. The multicomponent so
lution in the present experiment was prepared by dissolving U, Nd, Cs
and Sr in nitric acid. The effects of concentrations of oxalic acid an
d ascorbic acid on the precipitation yield and purity of uranium were
observed. As results of the study, the maximum precipitation yield of
uranium is revealed to be about 96.5% and the relative precipitation r
atio of Nd, Cs and Sr versus uranium are discussed at the condition of
the maximum precipitation yield of uranium, respectively.