Use of sawdust Eucalyptus sp. in the preparation of activates carbons
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/42044 |
Resumo: | Wood sawdust is a solid residue, generated in the timber industry, which is of no profitable use and can cause serious environmental problems if disposed inadequately. The aim of this study was to use the eucalyptus sawdust in the preparation of activated carbons AC) and test them as adsorbents of methylene blue (MB) and phenol, representative pollutants from aqueous effluents of various industries. The eucalyptus sawdust was characterized by instrumental analysis such as elementary analysis (CHNS-O), thermogravimetric analysis (TGA), infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The activated carbons were prepared by physical activation with carbon dioxide AC_CO2, (10º C min-1, 850º C, 1h) and by chemical activation with potassium carbonate AC_K2CO3 (10º C min-1, 850º C, 3h). The AC_CO2 and AC_K2CO3 were characterized by CHN-O, TGA, FTIR, N2 adsorption/desorption (BET) to evaluate the specific surface area and SEM. The resulting activated carbons were tested for their ability to adsorb MB and phenol in water. The activated carbons produced in this work were predominantly microporous and showed specific surface area of about 535 m2 g-1. The AC_K2CO3 was more effective in the adsorption of MB (81 mg g-1) and phenol (330 mg g-1) than AC_CO2 (32 mg g-1 and 172 mg g-1, respectively, for MB and phenol). |
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Use of sawdust Eucalyptus sp. in the preparation of activates carbonsUtilização de serragem de Eucalyptus sp. na preparação de carvões ativadosAgro-industrial residuesAdsorbentsPollutantsResíduos agroindustriaisAdsorventesPoluentesWood sawdust is a solid residue, generated in the timber industry, which is of no profitable use and can cause serious environmental problems if disposed inadequately. The aim of this study was to use the eucalyptus sawdust in the preparation of activated carbons AC) and test them as adsorbents of methylene blue (MB) and phenol, representative pollutants from aqueous effluents of various industries. The eucalyptus sawdust was characterized by instrumental analysis such as elementary analysis (CHNS-O), thermogravimetric analysis (TGA), infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The activated carbons were prepared by physical activation with carbon dioxide AC_CO2, (10º C min-1, 850º C, 1h) and by chemical activation with potassium carbonate AC_K2CO3 (10º C min-1, 850º C, 3h). The AC_CO2 and AC_K2CO3 were characterized by CHN-O, TGA, FTIR, N2 adsorption/desorption (BET) to evaluate the specific surface area and SEM. The resulting activated carbons were tested for their ability to adsorb MB and phenol in water. The activated carbons produced in this work were predominantly microporous and showed specific surface area of about 535 m2 g-1. The AC_K2CO3 was more effective in the adsorption of MB (81 mg g-1) and phenol (330 mg g-1) than AC_CO2 (32 mg g-1 and 172 mg g-1, respectively, for MB and phenol).A serragem é um resíduo sólido, gerado na indústria madeireira, que não tem uso rentável e pode causar sérios problemas ambientais quando disposta inadequadamente. Neste estudo, objetivou-se utilizar a serragem de eucalipto na preparação de carvões ativados (AC) e testá-los como adsorventes do corante azul de metileno (MB) e fenol; moléculas que representam poluentes de efluentes industriais. A serragem de eucalipto foi caracterizada por análises instrumentais, tais como: análise elementar (CHNS-O), análise termogravimétrica (TGA), espectroscopia na região do infravermelho (FTIR) e microscopia eletrônica de varredura (SEM). Os carvões ativados foram preparados por ativação física com dióxido de carbono AC_CO2, (10º Cmin-1, 850ºC, 1h) e pela ativação química com carbonato de potássio- AC_K2CO3 (10º Cmin-1, 850º C, 3h). O AC_CO2 e AC_K2CO3 foram caracterizados por CHN-O, TGA, FTIR, adsorção/dessorção de N2 (área BET) para avaliar a área superficial específica e SEM. Os carvões ativados resultantes foram testados quanto à capacidade de adsorver MB e fenol na água. Os carvões produzidos apresentaram características de material microporoso, apresentando área superficial média de cerca de 535 m2g-1. O AC_K2CO3 foi mais eficiente na adsorção do MB (81mgg-1) e fenol (330mgg-1) que o AC_CO2 (32mg g-1 e 172 mg g-1, respectivamente, para MB e fenol).Editora UFLA (Editora da Universidade Federal de Lavras)2020-07-19T01:32:37Z2020-07-19T01:32:37Z2012-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCOUTO, G. M. et al. Use of sawdust Eucalyptus sp. in the preparation of activates carbons. Ciência e Agrotecnologia, Lavras, v. 36, n. 1, p. 69-77, jan./fev. 2012. DOI: 10.1590/S1413-70542012000100009.http://repositorio.ufla.br/jspui/handle/1/42044Ciência e Agrotecnologiareponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLAAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessCouto, Gabriela MartucciDessimoni, Anelise Lima de AbreuBianchi, Maria LúciaPerígolo, Deise MoroneTrugilho, Paulo Fernandoeng2020-07-19T01:32:37Zoai:localhost:1/42044Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2020-07-19T01:32:37Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons Utilização de serragem de Eucalyptus sp. na preparação de carvões ativados |
title |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons |
spellingShingle |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons Couto, Gabriela Martucci Agro-industrial residues Adsorbents Pollutants Resíduos agroindustriais Adsorventes Poluentes |
title_short |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons |
title_full |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons |
title_fullStr |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons |
title_full_unstemmed |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons |
title_sort |
Use of sawdust Eucalyptus sp. in the preparation of activates carbons |
author |
Couto, Gabriela Martucci |
author_facet |
Couto, Gabriela Martucci Dessimoni, Anelise Lima de Abreu Bianchi, Maria Lúcia Perígolo, Deise Morone Trugilho, Paulo Fernando |
author_role |
author |
author2 |
Dessimoni, Anelise Lima de Abreu Bianchi, Maria Lúcia Perígolo, Deise Morone Trugilho, Paulo Fernando |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Couto, Gabriela Martucci Dessimoni, Anelise Lima de Abreu Bianchi, Maria Lúcia Perígolo, Deise Morone Trugilho, Paulo Fernando |
dc.subject.por.fl_str_mv |
Agro-industrial residues Adsorbents Pollutants Resíduos agroindustriais Adsorventes Poluentes |
topic |
Agro-industrial residues Adsorbents Pollutants Resíduos agroindustriais Adsorventes Poluentes |
description |
Wood sawdust is a solid residue, generated in the timber industry, which is of no profitable use and can cause serious environmental problems if disposed inadequately. The aim of this study was to use the eucalyptus sawdust in the preparation of activated carbons AC) and test them as adsorbents of methylene blue (MB) and phenol, representative pollutants from aqueous effluents of various industries. The eucalyptus sawdust was characterized by instrumental analysis such as elementary analysis (CHNS-O), thermogravimetric analysis (TGA), infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The activated carbons were prepared by physical activation with carbon dioxide AC_CO2, (10º C min-1, 850º C, 1h) and by chemical activation with potassium carbonate AC_K2CO3 (10º C min-1, 850º C, 3h). The AC_CO2 and AC_K2CO3 were characterized by CHN-O, TGA, FTIR, N2 adsorption/desorption (BET) to evaluate the specific surface area and SEM. The resulting activated carbons were tested for their ability to adsorb MB and phenol in water. The activated carbons produced in this work were predominantly microporous and showed specific surface area of about 535 m2 g-1. The AC_K2CO3 was more effective in the adsorption of MB (81 mg g-1) and phenol (330 mg g-1) than AC_CO2 (32 mg g-1 and 172 mg g-1, respectively, for MB and phenol). |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-02 2020-07-19T01:32:37Z 2020-07-19T01:32:37Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
COUTO, G. M. et al. Use of sawdust Eucalyptus sp. in the preparation of activates carbons. Ciência e Agrotecnologia, Lavras, v. 36, n. 1, p. 69-77, jan./fev. 2012. DOI: 10.1590/S1413-70542012000100009. http://repositorio.ufla.br/jspui/handle/1/42044 |
identifier_str_mv |
COUTO, G. M. et al. Use of sawdust Eucalyptus sp. in the preparation of activates carbons. Ciência e Agrotecnologia, Lavras, v. 36, n. 1, p. 69-77, jan./fev. 2012. DOI: 10.1590/S1413-70542012000100009. |
url |
http://repositorio.ufla.br/jspui/handle/1/42044 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution 4.0 International http://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 |
Editora UFLA (Editora da Universidade Federal de Lavras) |
publisher.none.fl_str_mv |
Editora UFLA (Editora da Universidade Federal de Lavras) |
dc.source.none.fl_str_mv |
Ciência e Agrotecnologia reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
instacron_str |
UFLA |
institution |
UFLA |
reponame_str |
Repositório Institucional da UFLA |
collection |
Repositório Institucional da UFLA |
repository.name.fl_str_mv |
Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835227771371520 |