Partitioning of actinides from high-level waste streams of Purex process using mixtures of CMPO and TBP in dodecane

Journal Article · Fri Jan 01 00:00:00 EST 1993 · Waste Management; (United States)

DOI:https://doi.org/10.1016/0956-053X(93)90060-A· OSTI ID:5624850

Mathur, J N; Murali, M S; Natarajan, P R; Badheka, L P; Banerji, A; Ramanujam, A; Dhami, P S; Gopalakrishnan, V; Dhumwad, R K; Rao, M K ^[1]

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1. Bhabha Atomic Research Centre, Bombay (India)

The extraction of actinides from high active aqueous raffinate waste (HAW) as well as high-level waste (HLW) solutions arising from Purex processing of thermal reactor fuels has been studied using a mixture of octyl(phenyl)-N,N-diisobutylcarbamoyl-methylphosphine oxide (CMPO) and TBP in dodecane. The results on the extraction and stripping of actinides, lanthanides, and other fission products are discussed. Optimum conditions are proposed for the efficient recovery of residual actinides from HAW and HLW streams by CMPO extraction followed by their selective stripping with suitable reagents. Experiments on the extraction and separation of actinides and lanthanides by CMPO in the presence of TBP in dodecane have also been carried out with U(VI) and Nd(III) to arrive at the limiting conditions for avoiding third-phase formation.

• OSTI ID: 5624850
• Journal Information: Waste Management; (United States), Vol. 13:4; ISSN 0956-053X
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACTINIDES
EXTRACTION
HIGH-LEVEL RADIOACTIVE WASTES
RADIOACTIVE WASTE PROCESSING
RARE EARTHS
FISSION PRODUCTS
PARTITION
ELEMENTS
ISOTOPES
MANAGEMENT
MATERIALS
METALS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTES
SEPARATION PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
052001* - Nuclear Fuels- Waste Processing