Scholarlink

Abstract <p>As a part of implementation of the closed nuclear fuel cycle concept, approaches to the recovery and use of valuable fission products from high-level waste resulting from spent nuclear fuel reprocessing at the Mayak Production Association were examined. The results of the development and trials of the extraction and sorption technologies for the concentration and purification of cesium and strontium radionuclides, rare earth elements, and platinum group metals are presented. Effectiveness of the crown ether based extraction systems for the simultaneous recovery of strontium and cesium was demonstrated during both rig and industrial trials. Methods of the combined alkaline and oxalate precipitation were developed for the concentration and purification of rare earth elements, including <sup>144</sup>Ce. Experimental data on the combined sorption and electrochemical recovery of platinum group metals from nitric acid solutions resulting from spent nuclear fuel reprocessing are provided. Procedures for reprocessing accumulated salt-rich high-level waste, for example, using ferrocyanide sorbents in a tangential flow filtration system, are considered. The results obtained show that the recovery of valuable radionuclides can be integrated into the general scheme of high-level waste reprocessing to increase the resource efficiency of the nuclear fuel cycle and reduce the radioactive waste volume.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Technologies for Recovering Valuable Elements from the Waste Generated and Stored at the Mayak Production Association

  • 期刊论文

  • 发表日期：

    2026年4月1日

查看全文
  • M. V. Logunov,
  • P. V. Kozlov,
  • Yu. A. Voroshilov,
  • A. Z. Yumaguen,
  • D. V. Markov,
  • A. I. Shirokov,
  • I. G. Tananaev,
  • P. V. Davydova,
  • M. D. Karavan,
  • I. V. Smirnov,
  • V. V. Milyutin

摘要

Abstract

As a part of implementation of the closed nuclear fuel cycle concept, approaches to the recovery and use of valuable fission products from high-level waste resulting from spent nuclear fuel reprocessing at the Mayak Production Association were examined. The results of the development and trials of the extraction and sorption technologies for the concentration and purification of cesium and strontium radionuclides, rare earth elements, and platinum group metals are presented. Effectiveness of the crown ether based extraction systems for the simultaneous recovery of strontium and cesium was demonstrated during both rig and industrial trials. Methods of the combined alkaline and oxalate precipitation were developed for the concentration and purification of rare earth elements, including 144Ce. Experimental data on the combined sorption and electrochemical recovery of platinum group metals from nitric acid solutions resulting from spent nuclear fuel reprocessing are provided. Procedures for reprocessing accumulated salt-rich high-level waste, for example, using ferrocyanide sorbents in a tangential flow filtration system, are considered. The results obtained show that the recovery of valuable radionuclides can be integrated into the general scheme of high-level waste reprocessing to increase the resource efficiency of the nuclear fuel cycle and reduce the radioactive waste volume.