A study on sodalite pellets as matrix for spent chloride salts confinement

M. Capone, C. Fedeli, G. De Angelis, M. Da Ros, F. Giacobbo, M. Giola, E. Macerata, M. Mariani

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Abstract

Pellets made of pure sodalite blended with commercial glass frit and pellets made of sodalite, glass frit and a mixture of chloride salts, synthesized through dry pressing and subsequent thermal treatment, were evaluated as a potential matrix for confinement of spent chloride salts coming from pyroprocesses. The sodalite pellets were leached at 23°C and 90°C for 28 days, according to the ASTM C1220-10 procedure. Normalized release rates were estimated for the following elements: Li, Na, Al, Si, K, Rb, Cs, Sr, Ba, La, Nd and compared with literature results. SEM investigations, carried out before and after the leaching tests, show dissolution and re-precipitation phenomena at 90°C.
Original languageEnglish
DOIs
Publication statusPublished - 2016
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Capone, M., Fedeli, C., De Angelis, G., Da Ros, M., Giacobbo, F., Giola, M., ... Mariani, M. (2016). A study on sodalite pellets as matrix for spent chloride salts confinement. https://doi.org/10.1557/adv.2017.218