Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Research, Society and Development |
Texto Completo: | https://rsdjournal.org/index.php/rsd/article/view/34058 |
Resumo: | Polymeric materials are increasingly present in everyday life and are discarded on a large scale constituting a challenge for its recycling. This work studied the depolymerization of expanded polystyrene (EPS) waste through microwave using carbon black as catalyst. The catalytic pyrolysis was investigated at five catalysts to polymer ratios (0.0125:1, 0.125:1, 0.25:1, 0.5:1, 1:1). The microwave assisted pyrolysis occurred at 400 W in a fixed time of 12 minutes. Fourier Transform Infrared Spectroscopy (FTIR) and thermogravimetric analysis (TGA) were performed to evaluate the depolymerization. The highest yield of non-condensable gases was obtained at the ratio 0.25:1 with a gaseous yield of 53%. FTIR analysis from liquid fraction of the ratio 0.25:1 showed new absorption bands and new degradation peaks at lower temperatures were observed in thermogravimetry when compared with EPS waste. This study demonstrated the possibility of depolymerization of EPS via microwave using carbonaceous structures, which may contribute to EPS recycling. |
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Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalystPirólisis por microondas de residuos de poliestireno expandido utilizando negro de carbón como catalizadorPirólise assistida por micro-ondas de resíduos de poliestireno expandido utilizando negro de fumo como catalisadorResiduos de poliestirenoCatálisisTratamiento de desechos.Polystyrene wasteCatalysisWaste treatment.Resíduos de poliestirenoCatáliseTratamento de resíduos.Polymeric materials are increasingly present in everyday life and are discarded on a large scale constituting a challenge for its recycling. This work studied the depolymerization of expanded polystyrene (EPS) waste through microwave using carbon black as catalyst. The catalytic pyrolysis was investigated at five catalysts to polymer ratios (0.0125:1, 0.125:1, 0.25:1, 0.5:1, 1:1). The microwave assisted pyrolysis occurred at 400 W in a fixed time of 12 minutes. Fourier Transform Infrared Spectroscopy (FTIR) and thermogravimetric analysis (TGA) were performed to evaluate the depolymerization. The highest yield of non-condensable gases was obtained at the ratio 0.25:1 with a gaseous yield of 53%. FTIR analysis from liquid fraction of the ratio 0.25:1 showed new absorption bands and new degradation peaks at lower temperatures were observed in thermogravimetry when compared with EPS waste. This study demonstrated the possibility of depolymerization of EPS via microwave using carbonaceous structures, which may contribute to EPS recycling.Los materiales poliméricos están cada vez más presentes en la vida cotidiana y son desechados a gran escala, constituyendo un reto para su reciclaje. Este trabajo estudió la despolimerización por microondas de residuos de poliestireno expandido (EPS) utilizando negro de carbón como catalizador. La pirólisis catalítica se investigó en cinco proporciones de catalizador a polímero (0,0125:1, 0,125:1, 0,25:1, 0,5:1, 1:1). La pirólisis asistida por microondas tuvo lugar a 400 W en un tiempo fijo de 12 minutos. Se realizaron espectroscopia infrarroja por transformada de Fourier (FTIR) y análisis termogravimétrico (TGA) para evaluar la despolimerización. El mayor rendimiento de gases no condensables se obtuvo en la relación 0,25:1 con un rendimiento de gas del 53%. El análisis FTIR de la fracción líquida en la proporción 0,25:1 mostró nuevas bandas de absorción y nuevos picos de degradación a temperaturas más bajas se observaron en termogravimetría en comparación con los residuos de EPS. Este estudio demostró la posibilidad de despolimerización de EPS mediante microondas utilizando estructuras carbonosas, lo que puede contribuir al reciclaje de EPS.Os materiais poliméricos estão cada vez mais presentes no dia a dia e são descartados em larga escala constituindo um desafio para sua reciclagem. Este trabalho estudou a despolimerização de resíduos de poliestireno expandido (EPS) por micro-ondas utilizando negro de fumo como catalisador. A pirólise catalítica foi investigada em cinco razões de catalisadores para polímero (0,0125:1, 0,125:1, 0,25:1, 0,5:1, 1:1). A pirólise assistida por micro-ondas ocorreu a 400 W em um tempo fixo de 12 minutos. Espectroscopia de Infravermelho com Transformada de Fourier (FTIR) e análise termogravimétrica (TGA) foram realizadas para avaliar a despolimerização. O maior rendimento de gases não condensáveis foi obtido na razão 0,25:1 com um rendimento gasoso de 53%. A análise FTIR da fração líquida na proporção 0,25:1 mostrou novas bandas de absorção e novos picos de degradação em temperaturas mais baixas foram observados na termogravimetria quando comparados com resíduos de EPS. Este estudo demonstrou a possibilidade de despolimerização do EPS via micro-ondas utilizando estruturas carbonáceas, o que pode contribuir para a reciclagem do EPS.Research, Society and Development2022-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/3405810.33448/rsd-v11i11.34058Research, Society and Development; Vol. 11 No. 11; e518111134058Research, Society and Development; Vol. 11 Núm. 11; e518111134058Research, Society and Development; v. 11 n. 11; e5181111340582525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/34058/28675Copyright (c) 2022 Paula de Marco; Matheus Polettohttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMarco, Paula de Poletto, Matheus2022-09-05T13:24:46Zoai:ojs.pkp.sfu.ca:article/34058Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:49:30.672965Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false |
dc.title.none.fl_str_mv |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst Pirólisis por microondas de residuos de poliestireno expandido utilizando negro de carbón como catalizador Pirólise assistida por micro-ondas de resíduos de poliestireno expandido utilizando negro de fumo como catalisador |
title |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst |
spellingShingle |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst Marco, Paula de Residuos de poliestireno Catálisis Tratamiento de desechos. Polystyrene waste Catalysis Waste treatment. Resíduos de poliestireno Catálise Tratamento de resíduos. |
title_short |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst |
title_full |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst |
title_fullStr |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst |
title_full_unstemmed |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst |
title_sort |
Microwave assisted pyrolysis of expanded polystyrene waste using carbon black catalyst |
author |
Marco, Paula de |
author_facet |
Marco, Paula de Poletto, Matheus |
author_role |
author |
author2 |
Poletto, Matheus |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Marco, Paula de Poletto, Matheus |
dc.subject.por.fl_str_mv |
Residuos de poliestireno Catálisis Tratamiento de desechos. Polystyrene waste Catalysis Waste treatment. Resíduos de poliestireno Catálise Tratamento de resíduos. |
topic |
Residuos de poliestireno Catálisis Tratamiento de desechos. Polystyrene waste Catalysis Waste treatment. Resíduos de poliestireno Catálise Tratamento de resíduos. |
description |
Polymeric materials are increasingly present in everyday life and are discarded on a large scale constituting a challenge for its recycling. This work studied the depolymerization of expanded polystyrene (EPS) waste through microwave using carbon black as catalyst. The catalytic pyrolysis was investigated at five catalysts to polymer ratios (0.0125:1, 0.125:1, 0.25:1, 0.5:1, 1:1). The microwave assisted pyrolysis occurred at 400 W in a fixed time of 12 minutes. Fourier Transform Infrared Spectroscopy (FTIR) and thermogravimetric analysis (TGA) were performed to evaluate the depolymerization. The highest yield of non-condensable gases was obtained at the ratio 0.25:1 with a gaseous yield of 53%. FTIR analysis from liquid fraction of the ratio 0.25:1 showed new absorption bands and new degradation peaks at lower temperatures were observed in thermogravimetry when compared with EPS waste. This study demonstrated the possibility of depolymerization of EPS via microwave using carbonaceous structures, which may contribute to EPS recycling. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/34058 10.33448/rsd-v11i11.34058 |
url |
https://rsdjournal.org/index.php/rsd/article/view/34058 |
identifier_str_mv |
10.33448/rsd-v11i11.34058 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://rsdjournal.org/index.php/rsd/article/view/34058/28675 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Paula de Marco; Matheus Poletto https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Paula de Marco; Matheus Poletto https://creativecommons.org/licenses/by/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Research, Society and Development |
publisher.none.fl_str_mv |
Research, Society and Development |
dc.source.none.fl_str_mv |
Research, Society and Development; Vol. 11 No. 11; e518111134058 Research, Society and Development; Vol. 11 Núm. 11; e518111134058 Research, Society and Development; v. 11 n. 11; e518111134058 2525-3409 reponame:Research, Society and Development instname:Universidade Federal de Itajubá (UNIFEI) instacron:UNIFEI |
instname_str |
Universidade Federal de Itajubá (UNIFEI) |
instacron_str |
UNIFEI |
institution |
UNIFEI |
reponame_str |
Research, Society and Development |
collection |
Research, Society and Development |
repository.name.fl_str_mv |
Research, Society and Development - Universidade Federal de Itajubá (UNIFEI) |
repository.mail.fl_str_mv |
rsd.articles@gmail.com |
_version_ |
1797052770912567296 |