Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise
Main Author: | |
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Publication Date: | 2022 |
Format: | Doctoral thesis |
Language: | por |
Source: | Biblioteca Digital de Teses e Dissertações do UFSM |
Download full: | http://repositorio.ufsm.br/handle/1/24407 |
Summary: | The present work focused on adding value to the sawdust of eucalypt wood, which is a lignocellulosic waste. This was accomplished by applying the pyrolysis technique, converting sawdust into biochar. The solid products (biochar) obtained from pyrolysis were investigated regarding their application as briquettes (energy purposes) and as adsorbent material. In the first stage of the work, the biochar was mixed with other binder residues such as crude wax (polymer pyrolysis residues) and eucalypt leaves, in the presence of starch, to produce briquettes. The briquettes were analyzed for their higher heating value (HHV) and mechanical strength. The biochar yield obtained in the pyrolysis was 35%, and its HHV was 33.02 MJ/kg at 400 ºC. The proportions of residues (crude wax and/or eucalypt leaf) evaluated in the composition of biochar briquettes were 10, 20 and 30%. The proportion of corn starch was set at 8%. The briquettes with 30% crude wax showed the best HHV, 23.45 MJ/kg, and the highest mechanical resistance to the shatter index test, 97.81%. In summary, briquettes with high energy efficiency and durability were produced. In the second stage of the work, the biochar was chemically activated with phosphoric acid (40%) and impregnated with calcium and aluminum lamellar double hydroxides (Ca/Al LDH), to improve its adsorption capacity. The novel developed adsorbent material was applied to remove the crystal violet (CV) dye from aqueous solutions through the batch adsorption operation. The adsorbent characterization results suggested that the material was effectively synthesized and supported in the biochar. Furthermore, the adsorption experiments indicated that pH 8 was more suitable for adsorption of the CV dye. In the adsorption kinetics and isotherm, the experimental data fit better to the pseudo-second order kinetic model and to the Freundlich isothermal model, respectively. The newly developed adsorbent showed a high adsorption capacity of the CV dye of 496.55 mg·g−1 at 50°C. Regarding the thermodynamic properties, the use of this adsorbent demonstrated a favorable, spontaneous and endothermic process. In the adsorption and desorption cycles, this new adsorbent material maintained 71% of the initial adsorptive capacity, even after four cycles of reuse. Therefore, the new biochar, chemically activated with phosphoric acid (40%) and impregnated with Ca/Al LDH, produced generated a sustainable adsorbent with high performance for the treatment of effluents contaminated by dyes. |
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2022-05-23T13:04:47Z2022-05-23T13:04:47Z2022-02-22http://repositorio.ufsm.br/handle/1/24407The present work focused on adding value to the sawdust of eucalypt wood, which is a lignocellulosic waste. This was accomplished by applying the pyrolysis technique, converting sawdust into biochar. The solid products (biochar) obtained from pyrolysis were investigated regarding their application as briquettes (energy purposes) and as adsorbent material. In the first stage of the work, the biochar was mixed with other binder residues such as crude wax (polymer pyrolysis residues) and eucalypt leaves, in the presence of starch, to produce briquettes. The briquettes were analyzed for their higher heating value (HHV) and mechanical strength. The biochar yield obtained in the pyrolysis was 35%, and its HHV was 33.02 MJ/kg at 400 ºC. The proportions of residues (crude wax and/or eucalypt leaf) evaluated in the composition of biochar briquettes were 10, 20 and 30%. The proportion of corn starch was set at 8%. The briquettes with 30% crude wax showed the best HHV, 23.45 MJ/kg, and the highest mechanical resistance to the shatter index test, 97.81%. In summary, briquettes with high energy efficiency and durability were produced. In the second stage of the work, the biochar was chemically activated with phosphoric acid (40%) and impregnated with calcium and aluminum lamellar double hydroxides (Ca/Al LDH), to improve its adsorption capacity. The novel developed adsorbent material was applied to remove the crystal violet (CV) dye from aqueous solutions through the batch adsorption operation. The adsorbent characterization results suggested that the material was effectively synthesized and supported in the biochar. Furthermore, the adsorption experiments indicated that pH 8 was more suitable for adsorption of the CV dye. In the adsorption kinetics and isotherm, the experimental data fit better to the pseudo-second order kinetic model and to the Freundlich isothermal model, respectively. The newly developed adsorbent showed a high adsorption capacity of the CV dye of 496.55 mg·g−1 at 50°C. Regarding the thermodynamic properties, the use of this adsorbent demonstrated a favorable, spontaneous and endothermic process. In the adsorption and desorption cycles, this new adsorbent material maintained 71% of the initial adsorptive capacity, even after four cycles of reuse. Therefore, the new biochar, chemically activated with phosphoric acid (40%) and impregnated with Ca/Al LDH, produced generated a sustainable adsorbent with high performance for the treatment of effluents contaminated by dyes.O presente trabalho teve como foco, agregar valor à serragem da madeira de eucalipto, a qual é um resíduo lignocelulósico. Isso foi realizado a partir da aplicação da técnica de pirólise, convertendo a serragem em biochar. Os produtos sólidos (biochar) obtidos da pirólise foram investigados com relação à sua aplicação como briquetes (fins energéticos) e como material adsorvente. Na primeira etapa do trabalho, o biochar foi misturado com outros resíduos aglutinantes tais como cera bruta (resíduos da pirólise de polímeros) e folhas de eucalipto, na presença de amido, para a confecção de briquetes. Os briquetes foram analisados quanto ao seu poder calorífico superior (PCS) e resistência mecânica. O rendimento de biochar obtido na pirólise foi de 35%, e o PCS do mesmo foi de 33,02 MJ/kg a 400 ºC. As proporções de resíduos (cera bruta e/ou folha de eucalipto) avaliadas na composição dos briquetes de carvão foram 10, 20 e 30%. A proporção de amido de milho foi fixada em 8%. Os briquetes com 30% de cera bruta apresentaram o melhor PCS, 23,45 MJ/kg, e maior resistência mecânica ao teste de quebra, 97,81%. Em síntese, foram produzidos briquetes de alta eficiência energética e durabilidade. Na segunda etapa do trabalho, o biochar foi quimicamente ativado com ácido fosfórico (40%) e impregnado com hidróxidos duplos lamelares de cálcio e alumínio (Ca/Al HDL), para melhorar sua capacidade de adsorção. O novo material adsorvente desenvolvido foi aplicado para remover o corante cristal violeta (CV) de soluções aquosas através da operação de adsorção em batelada. Os resultados da caracterização do adsorvente sugeriram que o material foi efetivamente sintetizado e suportado no biochar. Além disso, os experimentos de adsorção indicaram que o pH 8 foi mais adequado para adsorção do corante CV. Na cinética e isoterma de adsorção, os dados experimentais se ajustaram melhor ao modelo cinético de pseudo-segunda ordem e ao modelo isotérmico de Freundlich, respectivamente. O novo adsorvente desenvolvido mostrou uma alta capacidade de adsorção do corante CV alcançando a melhor capacidade de adsorção de 496,55 mg·g−1 a 50°C. Com relação as propriedades termodinâmicas, o uso deste adsorvente demonstrou um processo favorável, espontâneo e endotérmico. Nos ciclos de adsorção e dessorção, esse novo material adsorvente manteve 71% da capacidade adsortiva inicial, mesmo após quatro ciclos de reutilização. Com isso, esse novo biochar, quimicamente ativado com ácido fosfórico (40%) e impregnado com Ca/Al HDL, produzido gerou um adsorvente sustentável com alto desempenho para tratamento de efluentes contaminados por corantes.Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqporUniversidade 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/openAccessBiomassaSerragem de eucaliptoPiróliseBiocharBriquetesMaterial adsorventeBiomassEucalypt sawdustPyrolysisBiocharBriquettesAdsorbent materialCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAValorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da piróliseValorization of wastes from eucalypt wood sawdust through the application of pyrolysisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisTanabe, Eduardo Hiromitsuhttp://lattes.cnpq.br/9778700143605069Bertuol, Daniel AssumpçãoAbaide, Ederson RossiMallmann, Evandro StoffelsOliveira, Jivago Schumacher deRodrigues, Marco Antônio Siqueirahttp://lattes.cnpq.br/1493426900873118Missau, Juliano300600000006600600600600600600600600b1b7f60b-aaa2-4374-9587-545c489aacb9268512f6-22cf-4e60-b886-62a636c1a7a6fcabaa51-1ad1-439b-b057-9430cfe88209d4801dd4-72a8-4bf5-9c83-d7ac2d170357b1e72331-7994-439f-b3a7-dd111f6b0a84dca505d3-e3f6-4f16-8754-0b83a3c80bc53204f0c5-5fdb-40d1-86fb-fd2a6f0a28f6reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGEQ_2022_MISSÁU_JULIANO.pdfTES_PPGEQ_2022_MISSÁU_JULIANO.pdfTese de doutoradoapplication/pdf4106253http://repositorio.ufsm.br/bitstream/1/24407/1/TES_PPGEQ_2022_MISS%c3%81U_JULIANO.pdfa22107355353b519a9c3f0618480dad4MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/24407/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-816http://repositorio.ufsm.br/bitstream/1/24407/3/license.txtf8fcb28efb1c8cf0dc096bec902bf4c4MD531/244072022-05-23 10:04:48.213oai:repositorio.ufsm.br:1/24407Q3JlYXRpdmUgQ29tbW9ucw==Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-05-23T13:04:48Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise |
dc.title.alternative.eng.fl_str_mv |
Valorization of wastes from eucalypt wood sawdust through the application of pyrolysis |
title |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise |
spellingShingle |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise Missau, Juliano Biomassa Serragem de eucalipto Pirólise Biochar Briquetes Material adsorvente Biomass Eucalypt sawdust Pyrolysis Biochar Briquettes Adsorbent material CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise |
title_full |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise |
title_fullStr |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise |
title_full_unstemmed |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise |
title_sort |
Valorização de resíduos da serragem de madeira de eucalipto a partir da aplicação da pirólise |
author |
Missau, Juliano |
author_facet |
Missau, Juliano |
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 |
Abaide, Ederson Rossi |
dc.contributor.referee2.fl_str_mv |
Mallmann, Evandro Stoffels |
dc.contributor.referee3.fl_str_mv |
Oliveira, Jivago Schumacher de |
dc.contributor.referee4.fl_str_mv |
Rodrigues, Marco Antônio Siqueira |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/1493426900873118 |
dc.contributor.author.fl_str_mv |
Missau, Juliano |
contributor_str_mv |
Tanabe, Eduardo Hiromitsu Bertuol, Daniel Assumpção Abaide, Ederson Rossi Mallmann, Evandro Stoffels Oliveira, Jivago Schumacher de Rodrigues, Marco Antônio Siqueira |
dc.subject.por.fl_str_mv |
Biomassa Serragem de eucalipto Pirólise Biochar Briquetes Material adsorvente |
topic |
Biomassa Serragem de eucalipto Pirólise Biochar Briquetes Material adsorvente Biomass Eucalypt sawdust Pyrolysis Biochar Briquettes Adsorbent material CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Biomass Eucalypt sawdust Pyrolysis Biochar Briquettes Adsorbent material |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
The present work focused on adding value to the sawdust of eucalypt wood, which is a lignocellulosic waste. This was accomplished by applying the pyrolysis technique, converting sawdust into biochar. The solid products (biochar) obtained from pyrolysis were investigated regarding their application as briquettes (energy purposes) and as adsorbent material. In the first stage of the work, the biochar was mixed with other binder residues such as crude wax (polymer pyrolysis residues) and eucalypt leaves, in the presence of starch, to produce briquettes. The briquettes were analyzed for their higher heating value (HHV) and mechanical strength. The biochar yield obtained in the pyrolysis was 35%, and its HHV was 33.02 MJ/kg at 400 ºC. The proportions of residues (crude wax and/or eucalypt leaf) evaluated in the composition of biochar briquettes were 10, 20 and 30%. The proportion of corn starch was set at 8%. The briquettes with 30% crude wax showed the best HHV, 23.45 MJ/kg, and the highest mechanical resistance to the shatter index test, 97.81%. In summary, briquettes with high energy efficiency and durability were produced. In the second stage of the work, the biochar was chemically activated with phosphoric acid (40%) and impregnated with calcium and aluminum lamellar double hydroxides (Ca/Al LDH), to improve its adsorption capacity. The novel developed adsorbent material was applied to remove the crystal violet (CV) dye from aqueous solutions through the batch adsorption operation. The adsorbent characterization results suggested that the material was effectively synthesized and supported in the biochar. Furthermore, the adsorption experiments indicated that pH 8 was more suitable for adsorption of the CV dye. In the adsorption kinetics and isotherm, the experimental data fit better to the pseudo-second order kinetic model and to the Freundlich isothermal model, respectively. The newly developed adsorbent showed a high adsorption capacity of the CV dye of 496.55 mg·g−1 at 50°C. Regarding the thermodynamic properties, the use of this adsorbent demonstrated a favorable, spontaneous and endothermic process. In the adsorption and desorption cycles, this new adsorbent material maintained 71% of the initial adsorptive capacity, even after four cycles of reuse. Therefore, the new biochar, chemically activated with phosphoric acid (40%) and impregnated with Ca/Al LDH, produced generated a sustainable adsorbent with high performance for the treatment of effluents contaminated by dyes. |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-05-23T13:04:47Z |
dc.date.available.fl_str_mv |
2022-05-23T13:04:47Z |
dc.date.issued.fl_str_mv |
2022-02-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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http://repositorio.ufsm.br/handle/1/24407 |
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http://repositorio.ufsm.br/handle/1/24407 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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300600000006 |
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600 600 600 600 600 600 600 600 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Tecnologia |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Química |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Engenharia Química |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Tecnologia |
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