Characterization of Fluorescent Lamp Glass Waste Powders

Abstract:

Industrialized component wastes, regularly discarded by the society, are increasingly contributing to the environmental pollution. The glass of these lamps is contaminated with mercury, which a serious hazard due to conventional recycling by melting with other glasses. A possible solution could be its incorporation into a clay body to fabricate common fired ceramics such as bricks and tiles. The objective of this work is to characterize a type of glass to be incorporated into a clayey ceramic. The glass analyzed was obtained from fluorescent lamps, which was passed through mercury decontamination process and ground into powder. This glass powder was tested for X-ray fluorescence, DTA/DTG, optical microscopy, scanning electron microscopy and optical dilatometry. The results showed that the glass presents sintering and softening points around 650 °C and 800 °C, respectively. The chemical analysis indicated the presence of impurities in considerable amounts in the composition of the fluorescent lamp glass waste.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 1579-1584
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.1579
• Online since: August 2012
• Authors: Alline Sardinha Cordeiro Morais, Thaís Cristina da Costa Caldas, Sérgio Neves Monteiro, Carlos Maurício Fontes Vieira
• Keywords: Characterization, Fluorescent Lamp Glass, Waste

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