Assessment of environmental compatibility of glass–ceramic materials obtained from galvanic sludge and soda–lime glass residue

In this study, we evaluated the environmentalcompatibility of glass–ceramic materials produced from galvanic sludge and soda–lime glass to understand the occurring phenomena in the investigated ceramic system and to find an environmentally compatible way to recycle the materials. The formulated comp...

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Bibliographic Details
Published in:Process safety and environmental protection 2018-11, Vol.120, p.72-78
Main Authors: Felisberto, R., Santos, M.C., Arcaro, S., Basegio, T.M., Bergmann, C.P.
Format: Article
Language:English
Subjects:
Ceramics
Chemical composition
Compatibility
Diffraction
Environmental assessment
Environmental compatibility
Formulations
Galvanic sludge
Immobilization
Leaching
Lime
Microstructure
Organic chemistry
Particle size
Raw materials
Sludge
Soda-lime glass
Solubilization
Thermodynamic properties
X-ray diffraction
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Summary:In this study, we evaluated the environmentalcompatibility of glass–ceramic materials produced from galvanic sludge and soda–lime glass to understand the occurring phenomena in the investigated ceramic system and to find an environmentally compatible way to recycle the materials. The formulated compositions were homogenised (with 1, 5, 10, and 20 wt% of galvanic sludge), compacted, and fired at various temperatures (750–1050 °C). The chemical composition, particle size, thermal behaviour, structure (via X-ray diffraction (XRD), and microstructure (via SEM) of the raw materials, samples, and obtained glass–ceramic materials were evaluated. The ceramic materials were submitted to leaching and solubilization assays. We successfully produced environmentally compatible ceramic bodies using the formulations with 1 and 5 wt% galvanic sludge. Harmful elements could be successfully immobilised. The findings are significant mainly when extended to the industrial scale where the strategic reuse of this waste type is a concern.
ISSN:0957-5820
1744-3598
DOI:10.1016/j.psep.2018.08.032