Extraction of americium, curium, strontium and rare earths from aqua-tail solutions of WWER spent fuel element reprocessing
Shevchenko, V.B.; Smelov, V.S.; Kozlov, A.G.; Chubukov, V.V.; Lanin, V.P.; Smetanin, Eh.Ya.
Investigations in the field of spent fuel reprocessing. Vol. 21975
Investigations in the field of spent fuel reprocessing. Vol. 21975
AbstractAbstract
[en] Theoretical grounds are discussed of conditions ensuring quantitative extraction of strontium, americium, curium, rare earths from the aqueous solution and regimes of element fraction separation during reextraction operations. Technological scheme is described of element extraction from water-tail solutions of WWER spent fuel element reprocessing. This scheme includes: operations of joint extraction of americium, curium, strontium, 0.6M rare earths by di-2-ethylhexylphosphoric acid solution (HDEHP) in the hydrocarbon diluent; strontium reextraction by dilute nitric acid; reextraction of solution containing 0.8M lactic acid and 0.05M sodium dtpa; rare earth reextraction by 3M nitric acid. The technological scheme proposed ensures high degree of element extraction, allows strontium, americium, curium and rare earth successive and selective reextraction with 92-95% output from initial quantity
Original Title
Izvlechenie ameritsiya, kyuriya, strontsiya i redkozemel'nykh ehlementov iz vodno-khvostovykh rastvorov pererabotki otrabotavshikh tvehlov VVEhR
Primary Subject
Source
Sovet Ehkonomicheskoj Vzaimopomoshchi, Moscow (USSR). Postoyanniya Komissiya po Ispol'zovaniyu Atomnoj Ehnergii v Mirnykh Tselyakh; p. 144-151; 1975; p. 144-151; 3. CMEA symposium on investigations in the field of spent fuel reprocessing; Marianske Lazne, Czechoslovakia; 24 - 26 Apr 1974; 20 refs.; 3 figs.; 3 tables.
Record Type
Miscellaneous
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Conference
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Descriptors (DEI)
Descriptors (DEC)
ACTINIDE COMPLEXES, ALKALINE EARTH METAL COMPLEXES, COMPLEXES, DISPERSIONS, ENRICHED URANIUM REACTORS, ESTERS, FUEL ELEMENTS, HOMOGENEOUS MIXTURES, HYDROGEN COMPOUNDS, INORGANIC ACIDS, MIXTURES, NITROGEN COMPOUNDS, ORGANIC COMPOUNDS, ORGANIC PHOSPHORUS COMPOUNDS, OXYGEN COMPOUNDS, PHOSPHORIC ACID ESTERS, POWER REACTORS, PWR TYPE REACTORS, REACTOR COMPONENTS, REACTORS, SEPARATION PROCESSES, SOLUTIONS, THERMAL REACTORS, TRANSURANIUM COMPLEXES, WATER COOLED REACTORS, WATER MODERATED REACTORS
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