INFLUENCE OF CALCIUM CARBONATE ON THE DECOMPOSITION OF ASBESTOS CONTAINED IN END-OF-LIFE PRODUCTS (Articolo in rivista)

Type
Label
  • INFLUENCE OF CALCIUM CARBONATE ON THE DECOMPOSITION OF ASBESTOS CONTAINED IN END-OF-LIFE PRODUCTS (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.tca.2013.08.019 (literal)
Alternative label
  • Girolamo Belardi, Luigi Piga (2013)
    INFLUENCE OF CALCIUM CARBONATE ON THE DECOMPOSITION OF ASBESTOS CONTAINED IN END-OF-LIFE PRODUCTS
    in Thermochimica Acta
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Girolamo Belardi, Luigi Piga (literal)
Pagina inizio
  • 220 (literal)
Pagina fine
  • 228 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 573 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 8 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Environmental Geology and GeoEngineering Institute (CNR), Area della ricerca RM1, via Salaria km 29,300, 00016 Monterotondo (Rome), Italy Department of Chemical Engineering, Materials and Environment, Sapienza University of Rome, via Eudossiana 84, 00184 Rome, Italy (literal)
Titolo
  • INFLUENCE OF CALCIUM CARBONATE ON THE DECOMPOSITION OF ASBESTOS CONTAINED IN END-OF-LIFE PRODUCTS (literal)
Abstract
  • Three bearing-asbestos wastes, friction material, vinyl-asbestos (linoleum) and cement-asbestos mainly containing chrysotile were characterized. Powder X-ray diffraction (XRDP), scanning electron microscopy (SEM) with microanalysis observations and thermal analysis (TGA/DTA) were carried out on the materials as received and after heating at 1100 oC in order to observe their structural changes and thermal behaviours. A quantitative determination of chrysotile in the friction material was also carried out. To study the influence of CaCO3 on the decomposition of asbestos, the three techniques were also applied on the linoleum and cement-asbestos at room temperature and at 1100 oC after leaching of the materials with 1:3 HCl to remove the carbonates present in the wastes. The results show that the presence of CaCO3 prevents the asbestos to decompose according to the known decomposition reactions and leads to the formation of calcium-silicate compounds. When CaCO3 is removed by washing with HCl, decomposition of asbestos proceeds according to the expected reactions. (literal)
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