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<p>A glove box-adaptable continuous precipitation and sedimentation system, comprising a stirred-tank precipitator and a thickener-clarifier, was developed for the plutonium(IV) oxalate process. This article reports the design aspects of the system and the experimental evaluation of the precipitator using a non-radioactive surrogate, cerium(III). Experimental results revealed the interdependence of impeller speed and residence time in controlling particle size and achieving steady-state operation. Particle sizes of 110–120&#xa0;µm were obtained at 1000&#xa0;rpm for 20&#xa0;min residence time, while 86–94&#xa0;µm was achieved at 750&#xa0;rpm for 5&#xa0;min. Conversion efficiency remained above 98% regardless of the dynamic state of the system. The study provided key insights for the experimental evaluation of the complete system.</p> Graphical Abstract <p></p>

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Development of a glove box-adaptable continuous precipitation and sedimentation system for plutonium reconversion: experimental evaluation of precipitator performance

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月23日

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  • P. Vishnu Anand,
  • Pankaj,
  • Saroj K. Panda,
  • Amit Kumar,
  • Satyabrata Mishra,
  • J. Gnanasoundari,
  • R. Rajeev,
  • N. Desigan,
  • K. A. Venkatesan,
  • A. W. Patwardhan

摘要

A glove box-adaptable continuous precipitation and sedimentation system, comprising a stirred-tank precipitator and a thickener-clarifier, was developed for the plutonium(IV) oxalate process. This article reports the design aspects of the system and the experimental evaluation of the precipitator using a non-radioactive surrogate, cerium(III). Experimental results revealed the interdependence of impeller speed and residence time in controlling particle size and achieving steady-state operation. Particle sizes of 110–120 µm were obtained at 1000 rpm for 20 min residence time, while 86–94 µm was achieved at 750 rpm for 5 min. Conversion efficiency remained above 98% regardless of the dynamic state of the system. The study provided key insights for the experimental evaluation of the complete system.

Graphical Abstract