Immobilization of hospital waste incineration ashes in glass-ceramic composites |
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| Authors: | Pawel Stoch Małgorzata Ciecińska Agata Stoch Łukasz Kuterasiński Ireneusz Krakowiak |
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| Affiliation: | 1. AGH - University of Science and Technology, Faculty of Materials Science and Ceramics, Mickiewicza 30, 30-059 Krakow, Poland;2. Institute of Electron Technology Krakow Division, Zablocie 39, 30-701 Krakow, Poland;3. Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, Niezapominajek 8, 30-239 Krakow, Poland;4. Warsaw University of Technology, Faculty of Automotive and Construction Machinery Engineering, Narbutta 84, 02-524 Warsaw, Poland |
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| Abstract: | In the paper process of sintering of hospital incineration ash as a counterpart of low-level active waste with borosilicate glass frit is presented. It is shown that low porosity glass-ceramic waste-form can be obtained at a temperature range of 850–900 °C. In the sinter, the main crystal phases are wollastonite and aegirine-augite pyroxenes which have a large isomorphous capacity of binding hazardous elements. The crystal phases are fully encapsulated by the glass that provides additional protection against environmental influence. Thus, multibarrier material can be obtained at a temperature considerably lower than vitrification. This, in turn, can improve the economics of immobilization process. |
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| Keywords: | Glass-ceramic Incineration ash Borosilicate glass Sintering Radioactive waste |
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