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Partitioning of actinide from simulated high level wastes arising from reprocessing of PHWR fuels: counter current extraction studies using CMPO

Abstract

High level wastes (HLW) arising from reprocessing of pressurised heavy water reactor (PHWR) fuels contain actinides like neptunium, americium and cerium which are not extracted in the Purex process. They also contain small quantities of uranium and plutonium in addition to fission products. Removal of these actinides prior to vitrification of HLW can effectively reduce the active surveillance period of final waste form. Counter current studies using indigenously synthesised octyl (phenyl)-N, N-diisobutylcarbamoylmethylphosphine oxide (CMPO) were taken up as a follow-up of successful runs with simulated sulphate bearing low acid HLW solutions. The simulated HLW arising from reprocessing of PHWR fuel was prepared based on presumed burnup of 6500 MWd/Te of uranium, 3 years cooling period and 800 litres of waste generation per tonne of fuel reprocessed. The alpha activity of the HLW raffinate after extraction with the CMPO-TBP mixture could be brought down to near background level. (author). 13 refs., 2 tabs., 12 figs.
Authors:
Deshingkar, D S; Chitnis, R R; Wattal, P K; Theyyunni, T K; Nair, M K.T.; [1]  Ramanujam, A; Dhami, P S; Gopalakrishnan, V; Rao, M K; [2]  Mathur, J N; Murali, M S; Iyer, R H; [3]  Badheka, L P; Banerji, A [4] 
  1. Bhabha Atomic Research Centre, Bombay (India). Process Engineering and Systems Development Div.
  2. Bhabha Atomic Research Centre, Bombay (India). Fuel Reprocessing Group
  3. Bhabha Atomic Research Centre, Bombay (India). Radiochemistry Div.
  4. Bhabha Atomic Research Centre, Bombay (India). Bio-organic Div.
Publication Date:
Dec 31, 1994
Product Type:
Technical Report
Report Number:
BARC-1994/E/014
Reference Number:
SCA: 052001; 050800; 400105; PA: AIX-26:045360; EDB-95:076063; ERA-20:014956; NTS-96:000115; SN: 95001392656
Resource Relation:
Other Information: PBD: 1994
Subject:
05 NUCLEAR FUELS; 40 CHEMISTRY; HIGH-LEVEL RADIOACTIVE WASTES; PARTITION; PLUTONIUM; SOLVENT EXTRACTION; URANIUM; AMERICIUM; CERIUM 144; CESIUM; CMPO; DISTRIBUTION FUNCTIONS; DODECANE; EUROPIUM 152; EUROPIUM 154; FISSION PRODUCTS; FLOWSHEETS; IRON 59; MIXER-SETTLERS; NIOBIUM 95; NITRIC ACID; OXALIC ACID; PHWR TYPE REACTORS; PUREX PROCESS; RADIOACTIVE WASTE PROCESSING; RUTHENIUM; SODIUM CARBONATES; TBP; ZIRCONIUM 95
OSTI ID:
48582
Research Organizations:
Bhabha Atomic Research Centre, Bombay (India)
Country of Origin:
India
Language:
English
Other Identifying Numbers:
Other: ON: DE95628049; TRN: IN9500404045360
Availability:
INIS; OSTI as DE95628049
Submitting Site:
INIS
Size:
43 p.
Announcement Date:

Citation Formats

Deshingkar, D S, Chitnis, R R, Wattal, P K, Theyyunni, T K, Nair, M K.T., Ramanujam, A, Dhami, P S, Gopalakrishnan, V, Rao, M K, Mathur, J N, Murali, M S, Iyer, R H, Badheka, L P, and Banerji, A. Partitioning of actinide from simulated high level wastes arising from reprocessing of PHWR fuels: counter current extraction studies using CMPO. India: N. p., 1994. Web.
Deshingkar, D S, Chitnis, R R, Wattal, P K, Theyyunni, T K, Nair, M K.T., Ramanujam, A, Dhami, P S, Gopalakrishnan, V, Rao, M K, Mathur, J N, Murali, M S, Iyer, R H, Badheka, L P, & Banerji, A. Partitioning of actinide from simulated high level wastes arising from reprocessing of PHWR fuels: counter current extraction studies using CMPO. India.
Deshingkar, D S, Chitnis, R R, Wattal, P K, Theyyunni, T K, Nair, M K.T., Ramanujam, A, Dhami, P S, Gopalakrishnan, V, Rao, M K, Mathur, J N, Murali, M S, Iyer, R H, Badheka, L P, and Banerji, A. 1994. "Partitioning of actinide from simulated high level wastes arising from reprocessing of PHWR fuels: counter current extraction studies using CMPO." India.
@misc{etde_48582,
title = {Partitioning of actinide from simulated high level wastes arising from reprocessing of PHWR fuels: counter current extraction studies using CMPO}
author = {Deshingkar, D S, Chitnis, R R, Wattal, P K, Theyyunni, T K, Nair, M K.T., Ramanujam, A, Dhami, P S, Gopalakrishnan, V, Rao, M K, Mathur, J N, Murali, M S, Iyer, R H, Badheka, L P, and Banerji, A}
abstractNote = {High level wastes (HLW) arising from reprocessing of pressurised heavy water reactor (PHWR) fuels contain actinides like neptunium, americium and cerium which are not extracted in the Purex process. They also contain small quantities of uranium and plutonium in addition to fission products. Removal of these actinides prior to vitrification of HLW can effectively reduce the active surveillance period of final waste form. Counter current studies using indigenously synthesised octyl (phenyl)-N, N-diisobutylcarbamoylmethylphosphine oxide (CMPO) were taken up as a follow-up of successful runs with simulated sulphate bearing low acid HLW solutions. The simulated HLW arising from reprocessing of PHWR fuel was prepared based on presumed burnup of 6500 MWd/Te of uranium, 3 years cooling period and 800 litres of waste generation per tonne of fuel reprocessed. The alpha activity of the HLW raffinate after extraction with the CMPO-TBP mixture could be brought down to near background level. (author). 13 refs., 2 tabs., 12 figs.}
place = {India}
year = {1994}
month = {Dec}
}