THE REMOVAL OF FISSION PRODUCTS FROM AN ACID ALUMINUM NITRATE SOLUTION BY CO-PRECIPITATION METHODS

摘要

The removal of the major long-lived fission products by co-precipitation from an acid aluminum nitrate solution has been studied. Of the methods investigated the most efficient and economical treatment was found to be the co-precipitation of ruthenium, and cesium with copper ferrocyanide; of strontium with barium sulfate; of zirconium and niobium with zirconyl phosphate; and of the rare earths and yttrium with cerium oxalate. Approximately 95 per cent of the added tracers and carriers were removed from solution in a precipitate of about 50 grams per liter at a cost of 1.5 cents per liter.