Development of a new aqueous process for nuclear fuel reprocessing: Hot tests on the recovery of U and Pu from a nitric acid solution of spent LWR fuel

Yuezhou Wei, Tsuyoshi Arai, Harutaka Hoshi, Mikio Kumagai, Aimé Bruggeman, Patrick Goethals

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We have studied a new aqueous reprocessing system that consists of anion exchange as the main separation method, electrolytic reduction for reducing U(VI) to U(IV), and extraction chromatography for minor actinide partitioning. In this work, hot tests were carried out on the main flow sheet (U and Pu recovery) using a nitric acid solution of a spent commercial boiling water reactor fuel with burnup of 55 000 MWd/t HM. First, a separation experiment was conducted using a column packed with AR-01 anion exchanger, and the separation behavior of about 20 elements was examined. Then electrolytic reduction was performed for the U(VI) eluate from the first column using a flow-type electrolysis cell. Subsequently, the reduced U solution was applied to the second AR-01 column to separate the U(IV) from contaminated fission products. Most amounts of Pu(IV)-Np(IV), were successfully separated and recovered in the first column. In the electrolysis, U(VI), Np(V,VI), and a trace amount of Pu(VI) were reduced to U(IV), Np(IV), and Pu(IV), respectively. In the second column, the U(IV) with small amounts of Np(IV) and Pu(IV) was completely separated from the fission products. These results demonstrated that the proposed U and Pu recovery process is essentially feasible, though more effective elution methods for Pd and Tc need to be investigated further.

Original languageEnglish
Pages (from-to)217-231
Number of pages15
JournalNuclear Technology
Volume149
Issue number2
Publication statusPublished - 2005 Feb
Externally publishedYes

Fingerprint

nuclear fuel reprocessing
Nuclear fuel reprocessing
spent fuels
Spent fuels
nitric acid
Nitric acid
Electrolytic reduction
Fission products
recovery
Electrolysis
Recovery
Negative ions
fission products
electrolysis
Boiling water reactors
Ion exchangers
Actinides
Chromatography
boiling water reactors
Ion exchange

Keywords

  • Hot test
  • Ion exchange
  • Reprocessing

ASJC Scopus subject areas

  • Nuclear Energy and Engineering

Cite this

Development of a new aqueous process for nuclear fuel reprocessing : Hot tests on the recovery of U and Pu from a nitric acid solution of spent LWR fuel. / Wei, Yuezhou; Arai, Tsuyoshi; Hoshi, Harutaka; Kumagai, Mikio; Bruggeman, Aimé; Goethals, Patrick.

In: Nuclear Technology, Vol. 149, No. 2, 02.2005, p. 217-231.

Research output: Contribution to journalArticle

Wei, Yuezhou ; Arai, Tsuyoshi ; Hoshi, Harutaka ; Kumagai, Mikio ; Bruggeman, Aimé ; Goethals, Patrick. / Development of a new aqueous process for nuclear fuel reprocessing : Hot tests on the recovery of U and Pu from a nitric acid solution of spent LWR fuel. In: Nuclear Technology. 2005 ; Vol. 149, No. 2. pp. 217-231.
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