Removal of TBP degradation products from carbonate scrub solution using 2-ethyl-1-hexanol
- 1. Reprocessing Plant Operation Division, Reprocessing Group, Indira Gandhi Centre for Atomic Research, Kalpakkam (India)
Description
The reprocessing of spent nuclear fuel of FBTR having burn up (up to 155 GWd/t) was carried out in CORAL (Compact Reprocessing of Advanced fuel in Lead shielded cells) by following modified PUREX process. In this process, TBP diluted with n-dodecane is used as an extractant. TBP degrades significantly due to radiolysis and extracted metal ion as well as HNO3 hydrolysis leading to the formation of HDBP, H2MBP, H3PO4 etc which interfere with the liquid-liquid extraction process. Hence the spent solvent is periodically cleaned up with an alkaline solution of Na2CO3, (NH4)2CO3 or N2H4.H2CO3 . These carbonate solutions form water soluble salts with the acidic degradation products of TBP and complexes of the actinides like Pu, U and fission products like Zr and Ru
Additional details
Publishing Information
- Publisher
- Bhabha Atomic Research Centre
- Imprint Place
- Mumbai (India)
- Imprint Title
- Proceedings of DAE-BRNS biennial symposium on emerging trends in separation science and technology
- Imprint Pagination
- 274 p.
- Journal Page Range
- p. 110
Conference
- Title
- 5. DAE-BRNS biennial symposium on emerging trends in separation science and technology
- Acronym
- SESTEC-2012
- Dates
- 27 Feb - 1 Mar 2012
- Place
- Mumbai (India)
INIS
- Country of Publication
- India
- Country of Input or Organization
- India
- INIS RN
- 44017280
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- MATERIALS RECOVERY; NITRIC ACID; PLUTONIUM; PUREX PROCESS; SPENT FUELS; TBP; URANIUM; ZIRCONIUM
- Descriptors DEC
- ACTINIDES; BUTYL PHOSPHATES; ELEMENTS; ENERGY SOURCES; ESTERS; FUELS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MANAGEMENT; MATERIALS; METALS; NITROGEN COMPOUNDS; NUCLEAR FUELS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; PROCESSING; REACTOR MATERIALS; REPROCESSING; SEPARATION PROCESSES; TRANSITION ELEMENTS; TRANSURANIUM ELEMENTS; WASTE MANAGEMENT; WASTE PROCESSING
Optional Information
- Notes
- 3 refs., 2 tabs.