Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto
Ano de defesa: | 2023 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Tecnologia |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Química
|
Departamento: |
Engenharia Química
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/28883 |
Resumo: | Contamination of water resources is a topic much discussed by society due to the serious problems it entails for public health. Among several pollutants, dyes represent the largest group of organic contaminants. In view of this, it is imperative that new materials are developed that have good removal capacity and low production cost. In view of these needs, in the present study wood remains from Eucalyptus saligna were used for the production of activated charcoal. The material was pyrolyzed, physically activated with CO2 and chemically activated with CaFe/HDL impregnation. Then, the obtained material called biochar/CaFe-HDL was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), x-Ray diffraction (XRD) and area analysis techniques, surface (BET). Sequentially in the adsorption, the influence of pH, the adsorption kinetics, the chemical equilibrium and the thermodynamic study were evaluated. The results obtained in relation to the characterization of the material showed a good impregnation of CaFe/LDH in the CO2-activated biochar, which obtained a surface area of 156.28 m².g¹ . The adsorbent dosage was set at 0.5 g.L-¹ and pH 2.15 was defined as the ideal pH. The adsorption kinetics fit better to the pseudo-first order (PFO) model, while the adsorption isotherms fit better to the Brunauer-Emmett-Teller (BET) model. The maximum adsorption capacity was 397.79 mg.g-¹, found at 30 °C. The adsorptive process was considered exothermic, favorable and spontaneous. The results of this study showed that CaFe/LDH supported on CO2 activated biochar showed excellent performance, thus being considered an excellent potential adsorbent for MO removal. |
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2023-04-28T19:47:50Z2023-04-28T19:47:50Z2023-02-28http://repositorio.ufsm.br/handle/1/28883Contamination of water resources is a topic much discussed by society due to the serious problems it entails for public health. Among several pollutants, dyes represent the largest group of organic contaminants. In view of this, it is imperative that new materials are developed that have good removal capacity and low production cost. In view of these needs, in the present study wood remains from Eucalyptus saligna were used for the production of activated charcoal. The material was pyrolyzed, physically activated with CO2 and chemically activated with CaFe/HDL impregnation. Then, the obtained material called biochar/CaFe-HDL was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), x-Ray diffraction (XRD) and area analysis techniques, surface (BET). Sequentially in the adsorption, the influence of pH, the adsorption kinetics, the chemical equilibrium and the thermodynamic study were evaluated. The results obtained in relation to the characterization of the material showed a good impregnation of CaFe/LDH in the CO2-activated biochar, which obtained a surface area of 156.28 m².g¹ . The adsorbent dosage was set at 0.5 g.L-¹ and pH 2.15 was defined as the ideal pH. The adsorption kinetics fit better to the pseudo-first order (PFO) model, while the adsorption isotherms fit better to the Brunauer-Emmett-Teller (BET) model. The maximum adsorption capacity was 397.79 mg.g-¹, found at 30 °C. The adsorptive process was considered exothermic, favorable and spontaneous. The results of this study showed that CaFe/LDH supported on CO2 activated biochar showed excellent performance, thus being considered an excellent potential adsorbent for MO removal.A contaminação dos recurso hídricos é um tema muito discutido pela sociedade devido aos graves problemas acarretados para saúde pública. Dentre diversos poluentes, os corantes representam o maior grupo de contaminantes orgânicos. Frente a isso, torna-se imprecindível que sejam desenvolvidos novos materiais que possuam uma boa capacidade de remoção e baixo custo de produção. No presente estudo foi utilizada serragem proveniente de Eucaliptus saligna para a produção de carvão ativado. O material foi pirolizado, ativado fisicamente com CO2 e quimicamente com a impregnação de CaFe/HDL. Em seguida, o material obtido denominado Ca/Fe-HDL/Biochar (CO2) foi caracterizado por meio de técnicas de microscopia eletrônica de varredura (MEV), espectroscopia de infravermelho com transformada de Fourier (FTIR), difração de raios–x (DRX) e análise da área superficial (BET). Sequencialmente na adsorção, a influência do pH, a cinética de adsorção, o equílibrio químico e o estudo termodinâmico foram avaliados. Os resultados obtidos em relação a caracterização do material evidenciaram uma boa impregnação de CaFe/HDL no biochar ativado por CO2, que obteve área superficial de 156.28 m².g-¹ . A dosagem do adsorvente foi fixada em 0.5 g.L-¹ e o pH 2,15 foi definido como o pH ideal. A cinética de adsorção se ajustou melhor ao modelo de pseudo-primeira ordem, enquanto as isotermas de adsorção se ajustaram melhor ao modelo de Brunauer-Emmett-Teller (BET). A capacidade máxima de adsorção foi de 397,79 mg.g-¹, encontrada a 30 °C. O processo adsortivo foi considerado exotérmico, favorável e espontâneo. Os resultados deste trabalho mostraram que o CaFe/HDL suportado em biochar por CO2 apresentou excelente desempenho, sendo assim considerado um excelente adsorvente potencial para remoção de alaranjado de metila (MO).Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de TecnologiaPrograma de Pós-Graduação em Engenharia QuímicaUFSMBrasilEngenharia QuímicaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAdsorçãoCorantes aniônicosBiocharCaFe/HDLAlaranjado de metilaAdsorptionAnionic dyesMethyl orangeCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAAdsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucaliptoAdsorption of methyl orange dye applying Ca/Fe double lamellar hydroxides supported on eucalyptus sawdust biocharinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisTanabe, Eduardo Hiromitsuhttp://lattes.cnpq.br/9778700143605069Bertuol, Daniel AssumpçãoReisdörfer, GustavoZazycki, Maria Améliahttp://lattes.cnpq.br/4660129548658086Cruz, Victória Chaves300600000006600600600600600600b1b7f60b-aaa2-4374-9587-545c489aacb9d5a6fb3b-397c-452c-a45a-0d6049627230fcabaa51-1ad1-439b-b057-9430cfe8820968068dba-85ae-44b8-983c-b7abbe9f775c1fdb5c0f-fce2-4bca-840d-aaa321873700reponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGEQ_2023_CRUZ_VICTORIA.pdfDIS_PPGEQ_2023_CRUZ_VICTORIA.pdfDissertação de Mestradoapplication/pdf1565357http://repositorio.ufsm.br/bitstream/1/28883/1/DIS_PPGEQ_2023_CRUZ_VICTORIA.pdfbb4cd935e339bbc1ead7fe1160fa64e1MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/28883/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-816http://repositorio.ufsm.br/bitstream/1/28883/3/license.txtf8fcb28efb1c8cf0dc096bec902bf4c4MD531/288832023-04-28 16:47:50.57oai:repositorio.ufsm.br:1/28883Q3JlYXRpdmUgQ29tbW9ucw==Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestopendoar:39132023-04-28T19:47:50Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto |
dc.title.alternative.eng.fl_str_mv |
Adsorption of methyl orange dye applying Ca/Fe double lamellar hydroxides supported on eucalyptus sawdust biochar |
title |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto |
spellingShingle |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto Cruz, Victória Chaves Adsorção Corantes aniônicos Biochar CaFe/HDL Alaranjado de metila Adsorption Anionic dyes Methyl orange CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto |
title_full |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto |
title_fullStr |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto |
title_full_unstemmed |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto |
title_sort |
Adsorção de corante alaranjado de metila aplicando hidróxidos duplos lamelares de Ca/Fe suportado em biochar de serragem de eucalipto |
author |
Cruz, Victória Chaves |
author_facet |
Cruz, Victória Chaves |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Tanabe, Eduardo Hiromitsu |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9778700143605069 |
dc.contributor.advisor-co1.fl_str_mv |
Bertuol, Daniel Assumpção |
dc.contributor.referee1.fl_str_mv |
Reisdörfer, Gustavo |
dc.contributor.referee2.fl_str_mv |
Zazycki, Maria Amélia |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/4660129548658086 |
dc.contributor.author.fl_str_mv |
Cruz, Victória Chaves |
contributor_str_mv |
Tanabe, Eduardo Hiromitsu Bertuol, Daniel Assumpção Reisdörfer, Gustavo Zazycki, Maria Amélia |
dc.subject.por.fl_str_mv |
Adsorção Corantes aniônicos Biochar CaFe/HDL Alaranjado de metila |
topic |
Adsorção Corantes aniônicos Biochar CaFe/HDL Alaranjado de metila Adsorption Anionic dyes Methyl orange CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Adsorption Anionic dyes Methyl orange |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
Contamination of water resources is a topic much discussed by society due to the serious problems it entails for public health. Among several pollutants, dyes represent the largest group of organic contaminants. In view of this, it is imperative that new materials are developed that have good removal capacity and low production cost. In view of these needs, in the present study wood remains from Eucalyptus saligna were used for the production of activated charcoal. The material was pyrolyzed, physically activated with CO2 and chemically activated with CaFe/HDL impregnation. Then, the obtained material called biochar/CaFe-HDL was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), x-Ray diffraction (XRD) and area analysis techniques, surface (BET). Sequentially in the adsorption, the influence of pH, the adsorption kinetics, the chemical equilibrium and the thermodynamic study were evaluated. The results obtained in relation to the characterization of the material showed a good impregnation of CaFe/LDH in the CO2-activated biochar, which obtained a surface area of 156.28 m².g¹ . The adsorbent dosage was set at 0.5 g.L-¹ and pH 2.15 was defined as the ideal pH. The adsorption kinetics fit better to the pseudo-first order (PFO) model, while the adsorption isotherms fit better to the Brunauer-Emmett-Teller (BET) model. The maximum adsorption capacity was 397.79 mg.g-¹, found at 30 °C. The adsorptive process was considered exothermic, favorable and spontaneous. The results of this study showed that CaFe/LDH supported on CO2 activated biochar showed excellent performance, thus being considered an excellent potential adsorbent for MO removal. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-04-28T19:47:50Z |
dc.date.available.fl_str_mv |
2023-04-28T19:47:50Z |
dc.date.issued.fl_str_mv |
2023-02-28 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
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http://repositorio.ufsm.br/handle/1/28883 |
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http://repositorio.ufsm.br/handle/1/28883 |
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300600000006 |
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Universidade Federal de Santa Maria Centro de Tecnologia |
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Programa de Pós-Graduação em Engenharia Química |
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Brasil |
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Engenharia Química |
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Universidade Federal de Santa Maria Centro de Tecnologia |
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