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Zheleznogorsk-Ilimskiy, Russia

Kozin O.A.,Radiochemical Plant | Kulagina T.A.,Siberian Federal University
Chemical and Petroleum Engineering | Year: 2011

The problem is considered of breakdown and dissolution of sediments that form during storage of especially toxic waste liquids in enterprises for reprocessing spent nuclear fuel. Extraction of sediments by a traditional method is impossible due to sediment high activity. All the processes are performed remotely. The storage vessel for liquid wastes is not intended for performing active chemical processes, and this places additional limitations on the use of highly concentrated chemical reagents, since this may lead to their breakdown and waste liquids getting into the environment. The new technology is based on replacing water in chemical reagent solutions by water activated by means of hydrodynamic cavitation effects. © 2011 Springer Science+Business Media, Inc. Source

Shikerun T.G.,Radiochemical Plant | Ryabov A.S.,Radiochemical Plant | Shamin V.I.,Radiochemical Plant | Sofronov V.L.,Seversk Institute of Technology | And 2 more authors.
Radiochemistry | Year: 2014

Refining of uranyl nitrate solutions in centrifugal extractors to remove restricted impurities was studied. The maximum solvent loading with uranium in the steps of extraction, scrubbing, and stripping and the decontamination factors from the restricted impurities were determined. The optimum ratio of the flows of the aqueous and organic phases in scrubbing of the recycled solvent was found. © 2014 Pleiades Publishing, Inc. Source

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