Sorption of uranium in uranyl nitrate solutions on strong cationic resins and its elution with ammonium sulfate. II. Effects of EDTA on thorium decontamination; Estudos de sorpcao de uranio contido em solucoes de nitrato de uranilo por resina cationica forte e sua eluicao com sulfato de amonio. Parte II: efeito de EDTA na descontaminacao do torio (in Portuguese)
Technical Report
·
OSTI ID:4730409
This paper describes the studies of decontamination of thorium present as impurity in uranyl nitrate solutions, which was carried out through strong cationic resin where the thorium was partially retained. Then, the final decontamination was performed percolating the uranyl solution on a second cationic resin, after complexation of thorium (and other impurities) with EDTA. The thorium decontamination and the uranium retention were studied as a function of EDTA/U ratio, uranium concentration and acidity of the influent uranyl nitrate. The elution conditions were also studied as a function of eluent flow rate, concentration and acidity. Several tables and graphs showing the final results are included. (tr-auth)
- Research Organization:
- Instituto de Energia Atomica, Sao Paulo (Brazil)
- NSA Number:
- NSA-26-001938
- OSTI ID:
- 4730409
- Report Number(s):
- IEA--210
- Country of Publication:
- Brazil
- Language:
- Portuguese
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Related Subjects
COMPLEXES
EDTA
EFFICIENCY
ION EXCHANGE
N20500* --Chemistry--Separation Processes
SEPARATION PROCESSES
THORIUM
THORIUM/separation from uranyl nitrate solutions by complexing with EDTA and ion exchange
URANIUM
URANIUM/separation of thorium from
by complexing with EDTA and ion exchange
URANYL NITRATES
URANYL NITRATES/separation of thorium from
by complexing with EDTA and ion exchange
EDTA
EFFICIENCY
ION EXCHANGE
N20500* --Chemistry--Separation Processes
SEPARATION PROCESSES
THORIUM
THORIUM/separation from uranyl nitrate solutions by complexing with EDTA and ion exchange
URANIUM
URANIUM/separation of thorium from
by complexing with EDTA and ion exchange
URANYL NITRATES
URANYL NITRATES/separation of thorium from
by complexing with EDTA and ion exchange