Polyfunctional Microspherical Materials for Long-Term Disposal of Liquid Radioactive Wastes

Тип публикации: статья из журнала

Год издания: 2008

Идентификатор DOI: 10.1134/S1087659608050052

Ключевые слова: Alkaline earth metals, Aluminosilicates, Cesium, Cesium compounds, Chemical analysis, Igneous rocks, Industrial waste treatment, Mineralogy, Minerals, Mining, Nanostructured materials, Radioactive materials, Radioactive wastes, Radioactivity, Silica, Silicate minerals, Strontium, Strontium compounds, Cenospheres, Framework structures, Granitoid rocks, Liquid radioactive wastes, Mild conditions, Multistage processes, Phase transformations, Reprocessing, Structure types, Radioactive waste disposal

Аннотация: The possibility of immobilizing liquid radioactive wastes into polyfunctional microspherical materials of the block and powdered types is demonstrated. These materials are intended for reprocessing radioactive wastes of different compositions and make it possible to perform a multistage process of conditioning radioactive wastes under relatively mild conditions (at temperatures below 1000C) with the conversion of water-soluble cesium and strontium compounds into water-insoluble mineral forms in the course of solid-phase transformations. Owing to the aluminosilicate composition of microspherical components of energy ashes (cenospheres), the cenospheres can serve as precursors of aluminosilicate granitoid minerals. Different techniques are proposed and conditions are experimentally determined for transforming precursors into final mineral-like materials of the predicted structure types chosen in the framework of the geoecological approach. The framework structures of aluminosilicates and phosphates thus formed can fix cesium and strontium in the crystal lattice and ensure the geochemical equilibrium between the matrix and incorporating granitoid rocks under conditions of long-term disposal.

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Издание

Журнал: GLASS PHYSICS AND CHEMISTRY

Выпуск журнала: Vol. 34, Is. 5

Номера страниц: 547-558

ISSN журнала: 10876596

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Vereshchagina T.A. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia)
  • Anshits N.N. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia; Siberian Fed Univ, Fed State Educ Inst Higher Profess Educ, Krasnoyarsk 660041, Russia)
  • Sharonova O.M. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia)
  • Vasil'eva N.G. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia)
  • Vereshchagin S.N. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia; Siberian Fed Univ, Fed State Educ Inst Higher Profess Educ, Krasnoyarsk 660041, Russia)
  • Shishkina N.N. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia)
  • Fomenko E.V. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia)
  • Anshits A.G. (Russian Acad Sci, Siberian Branch, Inst Chem & Chem Technol, Krasnoyarsk 660049, Russia; Siberian Fed Univ, Fed State Educ Inst Higher Profess Educ, Krasnoyarsk 660041, Russia)

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