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Rabelo Monich, Patricia and Rincon Romero, Acacio and Desideri, Daniele and Bernardo, Enrico (2020) Waste-derived glass-ceramics fired in nitrogen: Stabilization and functionalization. [Online journal papers]

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Abstract (italian or english)

In a circular economy perspective, waste-derived materials are attractive once the adopted manufacturing technology combines low costs, absolute stabilization of pollutants and interesting functionalities of the product. This paper deals with the enhancement of chemical stability and functionalities of highly porous glass-ceramic foams, from vitreous residues the plasma processing of municipal solid waste (‘Plasmastone’), by firing in nitrogen, at 800–1000 °C. Before firing, the processing relied on alkali activation of glass suspensions, followed by intensive mechanical stirring. Previous experiments had demonstrated that the stabilization of pollutants could be achieved only by mixing Plasmastone with 30 wt% recycled boro-alumino-silicate glass, in samples fired in air. The change in the atmosphere had a significant impact on the Fe2+/Fe3+ balance, leading to a different phase assemblage, in turn causing the stabilization of pollutants even operating with more common recycled soda-lime glass. The new phase assemblage also promoted functionalities such as electrical conductivity, relative permittivity and electromagnetic shielding effectiveness.


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EPrint type:Online journal papers
Anno di Pubblicazione:30 January 2020
Key Words:Gel casting; Alkali activation; Glass ceramics; Foams; Electromagnetic shielding
Settori scientifico-disciplinari MIUR:Area 09 - Ingegneria industriale e dell'informazione > ING-IND/22 Scienza e tecnologia dei materiali
Area 09 - Ingegneria industriale e dell'informazione > ING-IND/31 Elettrotecnica
Struttura di riferimento:Dipartimenti > Dipartimento di Ingegneria Industriale
Codice ID:12840
Depositato il:13 Feb 2020 09:01
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