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...

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Autor principal: Ferreira, Pedro Paulo Linhares
Outros Autores: Melo, Dulce Maria de Araújo
Formato: Dissertação
Idioma:pt_BR
Publicado em: Brasil
Assuntos:
Pirólise rápida
Borracha residual
Catalisadores de ferro
CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA
Endereço do item:https://repositorio.ufrn.br/jspui/handle/123456789/27402
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id ri-123456789-27402
record_format dspace
institution Repositório Institucional
collection RI - UFRN
language pt_BR
topic Pirólise rápida
Borracha residual
Catalisadores de ferro
CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA
spellingShingle Pirólise rápida
Borracha residual
Catalisadores de ferro
CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA
Ferreira, Pedro Paulo Linhares
Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe
description 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.
author2 Melo, Dulce Maria de Araújo
author_facet Melo, Dulce Maria de Araújo
Ferreira, Pedro Paulo Linhares
format masterThesis
author Ferreira, Pedro Paulo Linhares
author_sort Ferreira, Pedro Paulo Linhares
title Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe
title_short Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe
title_full Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe
title_fullStr Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe
title_full_unstemmed Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe
title_sort pirólise rápida de borracha residual de pneus inservíveis (brpi) utilizando catalisadores de fe
publisher Brasil
publishDate 2019
url https://repositorio.ufrn.br/jspui/handle/123456789/27402
work_keys_str_mv AT ferreirapedropaulolinhares piroliserapidadeborracharesidualdepneusinserviveisbrpiutilizandocatalisadoresdefe
_version_ 1773962476414566400
spelling ri-123456789-274022019-08-11T05:21:05Z Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe Ferreira, Pedro Paulo Linhares Melo, Dulce Maria de Araújo Carvalho, Luciene Santos Braga, Renata Martins Melo, Vítor Rodrigo de Melo e Pirólise rápida Borracha residual Catalisadores de ferro CNPQ::ENGENHARIAS::ENGENHARIA DE MATERIAIS E METALURGICA 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. Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) A borracha residual de pneus inservíveis (BRPI), depositada em aterros de maneira irregular, torna-se um resíduo industrial preocupante. No Brasil, estima-se que anualmente são gerados 20 milhões da BRPI e 289 milhões do resíduo só na Europa. Logo, através da legislação vigente (CONAMA nº 416/2009), viu-se a necessidade de diminuir os impactos ambientais gerados pela BRPI. Tecnologias limpas foram incrementadas na destinação deste resíduo, dentre elas o processo de pirólise que, combinado com o uso de catalisadores, aparece como tecnologia promissora para converter a BRPI em produtos que podem ser usados, não só para produção de energia, bem como para geração de produtos químicos valiosos. Por outro lado, a biomassa de cinza de casca de arroz (CCA) é um resíduo valioso, que tem sido empregado como suporte de catalisadores. Dessa forma, o presente trabalho teve como objetivo avaliar a eficiência de um catalisador de Fe/CCA na pirólise da BRPI para a produção de compostos químicos usados na indústria, comparando-a com a de um catalisador de Fe/MCM-41, também preparado a paritir da biomassa. Para tanto, resíduos e catalisadores foram caracterizados por difração de raios X (DRX), fluorescência de raios X (FRX), microscopia eletrônica de varredura (MEV), área específica (BET) e análise termogravimétrica (TG), além de análise imediata. Os catalisadores Fe/MCM-41 e Fe/CCA foram avaliados no processo de pirólise rápida da BRPI a 400°C, para obtenção de produtos químicos em um pirolisador 5200 HP-R da CDS Analytical, e os gases condensados da pirólise foram analisados em um cromatógrafo 3900 da VARIAN. A partir dos resultados, foi possível observar que houve a produção de p-cimeno. O catalisador Fe/CCA obteve melhor desempenho na geração dos produtos químicos. 2019-08-05T20:26:03Z 2019-08-05T20:26:03Z 2016-07-29 masterThesis FERREIRA, Pedro Paulo Linhares. Pirólise rápida de borracha residual de pneus inservíveis (BRPI) utilizando catalisadores de Fe. 2016. 119f. Dissertação (Mestrado em Ciência e Engenharia de Materiais) - Centro de Ciências Exatas e da Terra, Universidade Federal do Rio Grande do Norte, Natal, 2016. https://repositorio.ufrn.br/jspui/handle/123456789/27402 pt_BR Acesso Aberto application/pdf Brasil UFRN PROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIA E ENGENHARIA DE MATERIAIS

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