1962•Radiochimica ActaRequires access

Mutual Separation of Uranium, Plutonium and Fission Products by Gradient Multistage Extraction

Tomitaro ISHIMORI, Johkun AKATSU

Abstract

Summary Uranium, plutonium and fission products are separated by means of a simple multistage extraction of 20% TBP-carbontetrachloride vs. nitric acid series. In order to enhance the mutual separation, the acidity of the aqueous portions is lowered stepwise. All fission products, plutonium and uranium are obtained in aqueous solutions in the sequence mentioned, leaving no active material in the organic solutions of the extractor. The plutonium fractions contain some fission products and a small amount of uranium. However, uranium is obtained with a fairly high purity. The same organic solutions can be used several times giving more or less the same separated products.

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Key concepts: Plutonium, Uranium, Chemistry, Fission products, Nitric acid, Radiochemistry, Extraction (chemistry), Fission