Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe
The residual rubber of unserviceable tires (RRUT), incorrectly disposed of in landfill sites, becomes worrisome industrial waste. It is estimated that Brazil alone produces 20 million tons of RRUT annually, while Europe generates 289 million tons. Hence, it became necessary to reduce the environm...
Na minha lista:
| Autor principal: | |
|---|---|
| Outros Autores: | |
| Formato: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Brasil
|
| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/jspui/handle/123456789/27402 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: | The residual rubber of unserviceable tires (RRUT), incorrectly disposed of in landfill
sites, becomes worrisome industrial waste. It is estimated that Brazil alone produces
20 million tons of RRUT annually, while Europe generates 289 million tons. Hence, it
became necessary to reduce the environmental impacts generated by RRUT due to
the newly-enacted law (CONAMA no. 416/2009). Clean technologies, such as
pyrolysis, have been applied to the processing of this residue. The pyrolysis process,
together with catalysts, appears to be a promising technology for the conversion of
RRUT into products that can be used not only for energy but also for the generation
of chemicals, such as benzene, toluene, ethylbenzene and xylene (BTEX). On the
other hand, the bagasse fly ash (BFA) biomass is a valuable residue, that has been
used as a catalyser support . Therefore, the current paper has as objective evaluate
the performance of an Fe/BFA catalyser during the RRUT pyrolysis to the production
of chemical compounds used at industry, comparing him with an Fe/MCM-41
catalyser, also made from biomass. For this purpose, the residue and the catalysts
were characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), scanning
electron microscopy (SEM), BET surface área, thermogravimetric analysis (TGA), in
addition to the immediate analysis. The efficacy of two catalysts, Fe/MCM-41 and
Fe/CCA, was compared. Each catalyst was applied to the fast pyrolysis process of
the RRUT at 400°C to obtain chemical compounds in a CDS Analytical 5200 HP-R
pyrolyzer, and the condensed gases were analysed in a VARIAN 3900
chromatograph. Due to these results, it was possible to observe that the overall
chemical compound generation was harmed, in addition to the occurance of a new
compound p-cymene. From the results, was possible analyse that there was pcymene production. The Fe/BFA got an better performance on chemical production
generation. |
|---|