Tri butyl phosphate process for actinide partitioning from high level wastes
Creators
- 1. Bhabha Atomic Research Center, Bombay (India). Process Engineering and Systems Development Division
Description
Partitioning of actinides from High Level Wastes (HLW) arising from fuel reprocessing plants prior to their immobilisation in vitreous matrices would reduce the long term hazards of the vitreous waste product. Actinide partitioning studies based on solvent extraction were carried out on simulated HLW solutions using tri-n-butyl phosphate (TBP) as an extractant. Study on extraction of americium was taken up as an example in this case. Extraction of americium from HLW by TBP requires low acidity and presence of salting out agents. It was shown that americium can be effectively partitioned even from HLW solutions with high acidity using higher concentrations of TBP, higher organic to aqueous phase ratios and proper salting out agents. Counter-current experiments using mixer-settlers were conducted to assess the process feasibility. (author). 16 refs., 8 figs., 7 tabs
Availability note (English)
MF available from INIS under the Report Number.Files
26019664.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 48 p.
- Report number
- BARC--1994/E/023
INIS
- Country of Publication
- India
- Country of Input or Organization
- India
- INIS RN
- 26019664
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Descriptors DEI
- ALUMINIUM NITRATES; AMERICIUM; AQUEOUS SOLUTIONS; CERIUM; CERIUM 141; CONCENTRATION RATIO; COUNTER CURRENT; EUROPIUM; EUROPIUM 152; EUROPIUM 154; FISSION PRODUCTS; HIGH-LEVEL RADIOACTIVE WASTES; IRON; IRON NITRATES; IRON 59; MIXER-SETTLERS; NITRIC ACID; PARTITION; PLUTONIUM; RUTHENIUM; SODIUM NITRATES; SOLVENT EXTRACTION; TBP; TRACER TECHNIQUES; URANIUM; VITRIFICATION; ZIRCONIUM; ZIRCONIUM 95
- Descriptors DEC
- ACTINIDES; ALKALI METAL COMPOUNDS; ALUMINIUM COMPOUNDS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BUTYL PHOSPHATES; CERIUM ISOTOPES; DAYS LIVING RADIOISOTOPES; DISPERSIONS; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTS; EQUIPMENT; ESTERS; EUROPIUM ISOTOPES; EVEN-ODD NUCLEI; EXTRACTION; EXTRACTION APPARATUSES; HOMOGENEOUS MIXTURES; HOURS LIVING RADIOISOTOPES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; INTERMEDIATE MASS NUCLEI; IRON COMPOUNDS; IRON ISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPE APPLICATIONS; ISOTOPES; MATERIALS; METALS; MINUTES LIVING RADIOISOTOPES; MIXTURES; NITRATES; NITROGEN COMPOUNDS; NUCLEI; ODD-ODD NUCLEI; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; PLATINUM METALS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; RADIOISOTOPES; RARE EARTH NUCLEI; RARE EARTHS; SEPARATION EQUIPMENT; SEPARATION PROCESSES; SODIUM COMPOUNDS; SOLUTIONS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; TRANSPLUTONIUM ELEMENTS; TRANSURANIUM ELEMENTS; WASTES; YEARS LIVING RADIOISOTOPES; ZIRCONIUM ISOTOPES