Production of Porous Ceramic Materials from Spent Fluorescent Lamps
Spent fluorescent lamps (SFL) are classified as hazardous materials in the European Waste Catalogue, which includes residues from various hi-tech devices. The most common end-of-life treatment of SFL consists in the recovery of rare earth elements from the phosphor powders, with associated problems...
Main Authors: | , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2021-06-01
|
Series: | Applied Sciences |
Subjects: | |
Online Access: | https://www.mdpi.com/2076-3417/11/13/6056 |
id |
doaj-9a340bcb710a46f1b582a8405f03dc1f |
---|---|
record_format |
Article |
spelling |
doaj-9a340bcb710a46f1b582a8405f03dc1f2021-07-15T15:30:29ZengMDPI AGApplied Sciences2076-34172021-06-01116056605610.3390/app11136056Production of Porous Ceramic Materials from Spent Fluorescent LampsEgle Rosson0Acacio Rincón Romero1Denis Badocco2Federico Zorzi3Paolo Sgarbossa4Roberta Bertani5Paolo Pastore6Enrico Bernardo7Department of Industrial Engineering (DII), University of Padova, Via Marzolo 9, 35131 Padova, ItalyDepartment of Mechanical, Materials and Manufacturing Engineering, University of Nottingham, 642 Clifton Boulevard, Nottingham NG7 2TQ, UKDepartment of Chemical Sciences (DiSC), University of Padova, Via Marzolo 1, 35131 Padova, ItalyCenter of Analysis and Services for Certification (CEASC), University of Padova, Via Jappelli 1/A, 35131 Padova, ItalyDepartment of Industrial Engineering (DII), University of Padova, Via Marzolo 9, 35131 Padova, ItalyDepartment of Industrial Engineering (DII), University of Padova, Via Marzolo 9, 35131 Padova, ItalyDepartment of Chemical Sciences (DiSC), University of Padova, Via Marzolo 1, 35131 Padova, ItalyDepartment of Industrial Engineering (DII), University of Padova, Via Marzolo 9, 35131 Padova, ItalySpent fluorescent lamps (SFL) are classified as hazardous materials in the European Waste Catalogue, which includes residues from various hi-tech devices. The most common end-of-life treatment of SFL consists in the recovery of rare earth elements from the phosphor powders, with associated problems in the management of the glass residues, which are usually landfilled. This study involves the manufacturing of porous ceramics from both the coarse glass-rich fraction and the phosphor-enriched fraction of spent fluorescent lamps. These porous materials, realizing the immobilization of Rare Earth Elements (REEs) within a glass matrix, are suggested for application in buildings as thermal and acoustic insulators. The proposed process is characterized by: (i) alkaline activation (2.5 M or 1 M NaOH aqueous solution); (ii) pre-curing at 75 °C; (iii) the addition of a surfactant (Triton X-100) for foaming at high-speed stirring; (iv) curing at 45 °C; (v) viscous flow sintering at 700 °C. All the final porous ceramics present a limited metal leaching and, in particular, the coarse glass fraction activated with 2.5 M NaOH solution leads to materials comparable to commercial glass foams in terms of mechanical properties.https://www.mdpi.com/2076-3417/11/13/6056spent fluorescent lampsporous ceramic materialsalkali activationhigh-speed foamingviscous flow sintering |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Egle Rosson Acacio Rincón Romero Denis Badocco Federico Zorzi Paolo Sgarbossa Roberta Bertani Paolo Pastore Enrico Bernardo |
spellingShingle |
Egle Rosson Acacio Rincón Romero Denis Badocco Federico Zorzi Paolo Sgarbossa Roberta Bertani Paolo Pastore Enrico Bernardo Production of Porous Ceramic Materials from Spent Fluorescent Lamps Applied Sciences spent fluorescent lamps porous ceramic materials alkali activation high-speed foaming viscous flow sintering |
author_facet |
Egle Rosson Acacio Rincón Romero Denis Badocco Federico Zorzi Paolo Sgarbossa Roberta Bertani Paolo Pastore Enrico Bernardo |
author_sort |
Egle Rosson |
title |
Production of Porous Ceramic Materials from Spent Fluorescent Lamps |
title_short |
Production of Porous Ceramic Materials from Spent Fluorescent Lamps |
title_full |
Production of Porous Ceramic Materials from Spent Fluorescent Lamps |
title_fullStr |
Production of Porous Ceramic Materials from Spent Fluorescent Lamps |
title_full_unstemmed |
Production of Porous Ceramic Materials from Spent Fluorescent Lamps |
title_sort |
production of porous ceramic materials from spent fluorescent lamps |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2021-06-01 |
description |
Spent fluorescent lamps (SFL) are classified as hazardous materials in the European Waste Catalogue, which includes residues from various hi-tech devices. The most common end-of-life treatment of SFL consists in the recovery of rare earth elements from the phosphor powders, with associated problems in the management of the glass residues, which are usually landfilled. This study involves the manufacturing of porous ceramics from both the coarse glass-rich fraction and the phosphor-enriched fraction of spent fluorescent lamps. These porous materials, realizing the immobilization of Rare Earth Elements (REEs) within a glass matrix, are suggested for application in buildings as thermal and acoustic insulators. The proposed process is characterized by: (i) alkaline activation (2.5 M or 1 M NaOH aqueous solution); (ii) pre-curing at 75 °C; (iii) the addition of a surfactant (Triton X-100) for foaming at high-speed stirring; (iv) curing at 45 °C; (v) viscous flow sintering at 700 °C. All the final porous ceramics present a limited metal leaching and, in particular, the coarse glass fraction activated with 2.5 M NaOH solution leads to materials comparable to commercial glass foams in terms of mechanical properties. |
topic |
spent fluorescent lamps porous ceramic materials alkali activation high-speed foaming viscous flow sintering |
url |
https://www.mdpi.com/2076-3417/11/13/6056 |
work_keys_str_mv |
AT eglerosson productionofporousceramicmaterialsfromspentfluorescentlamps AT acaciorinconromero productionofporousceramicmaterialsfromspentfluorescentlamps AT denisbadocco productionofporousceramicmaterialsfromspentfluorescentlamps AT federicozorzi productionofporousceramicmaterialsfromspentfluorescentlamps AT paolosgarbossa productionofporousceramicmaterialsfromspentfluorescentlamps AT robertabertani productionofporousceramicmaterialsfromspentfluorescentlamps AT paolopastore productionofporousceramicmaterialsfromspentfluorescentlamps AT enricobernardo productionofporousceramicmaterialsfromspentfluorescentlamps |
_version_ |
1721300047827566592 |