Encrustation Prevention of Zirconium Molybdate Hydrate

Takahiro Arai, Daiyu Ito, Izumi Hirasawa*, Yasunori Miyazaki, Masayuki Takeuchi

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

In nuclear fuel reprocessing, spent nuclear fuel is dissolved by a nitric acid. It is now known that molybdenum and zirconium in fission products react to form zirconium molybdate hydrate (ZMH). ZMH adheres to the inner surface of reprocessing equipment, which affects the extraction efficiency in the subsequent extraction process. Therefore, a new prevention method of ZMH encrustation is required for stable plant operation. In this study, the encrustation amount of ZMH was investigated. Observing the deposition process, it was clarified that ZMH fine crystals were generated and agglomerated, followed by the rapid deposition. The encrustation amount of ZMH decreased as temperature or initial Mo/Zr mole ratio increased, or as the concentration of a nitric acid was reduced.

本文言語English
ページ(範囲)1199-1204
ページ数6
ジャーナルChemical Engineering and Technology
41
6
DOI
出版ステータスPublished - 2018 6

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 産業および生産工学

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