Repositório Digital

A- A A+

Thermal processes for lead removal from the funnel glass of CRT monitors

.

Thermal processes for lead removal from the funnel glass of CRT monitors

Mostrar registro completo

Estatísticas

Título Thermal processes for lead removal from the funnel glass of CRT monitors
Outro título Thermal processes for lead removal from the funnel glass of cathode ray tube monitors
Autor Veit, Hugo Marcelo
Oliveira, Erich Lopes Braitback de
Richter, Guilherme Muller
Abstract The disposal of CRT monitors increases each year, generating millions of tons of waste containing various types of materials. The glass present in CRT tubes displayed about 20%–25% of lead oxide. If improperly disposed of, this glass can be leached directly in nature or may cause environmental contamination, especially with lead. Because of this leaching possibility, this waste is classified as Class I solid waste, according to the NBR 10004. Thermal processing of these glass tubes was seen as an alternative to remove lead from the glass matrix. Parameters such as reaction time, percentage of reducing agent, the reaction temperature, and atmospheric environment of the system were analyzed in this work. It was concluded that it is possible to remove the lead from the glass matrix by thermal processing. The removal of 92% of the lead from the glass was obtained at 800°C, a vacuum of 1.3 kPa, with 5% carbon as a reducing agent, and 18 hours of thermal processing.
Contido em Rem: revista Escola de Minas. Ouro Preto. Vol. 68, n. 3 (jul./set. 2015), p. 287-294
Assunto Chumbo
Lixo eletrônico
Meio ambiente
Reciclagem
[en] CRT monitors
[en] Eelectronic equipment
[en] Electrical waste
[en] Lead removal
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/129448
Arquivos Descrição Formato
000974106.pdf (562.2Kb) Texto completo Adobe PDF Visualizar/abrir

Este item está licenciado na Creative Commons License

Este item aparece na(s) seguinte(s) coleção(ões)


Mostrar registro completo

Percorrer



  • O autor é titular dos direitos autorais dos documentos disponíveis neste repositório e é vedada, nos termos da lei, a comercialização de qualquer espécie sem sua autorização prévia.
    Projeto gráfico elaborado pelo Caixola - Clube de Criação Fabico/UFRGS Powered by DSpace software, Version 1.8.1.