Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Repositório Institucional Manancial UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/16508 |
Resumo: | In this research, coproducts from rice harvesting and manufacturing, such as straw and husks, were submitted to subcritical water hydrolysis in order to obtain a hydrolyzed liquid containing fermentable sugars and a solid residue with an adsorption capacity higher than the fresh biomass. The assays were carried out at a laboratory-scale unit containing 50 mL hydrolysis reactor heated by thermal resistance, preheating baths, temperature sensors and controllers, pressure gauges, and pressure/flow control valves. The following process variables were studied: temperature (180, 220 and 260°C) and water / solids mass ratio (7.5 and 15 g water/g initial biomass). The pressure was set at 25 MPa and the total reaction time was defined as 15 minutes. Some responses were analyzed in order to identify the best process condition: reducing sugar (RS) yield, compositions of fermentable sugars and inhibitors, modification in the morphology and surface area of the hydrolyzed biomass, and residual adsorption capacity. In the experimental assays with rice straw, the highest RS yield of 33.4 ± 4.3 g/100 g rice straw (dry basis) was obtained at 220°C and water / solids mass ratio of 7.5 g water/g initial biomass (220°C / R-7.5; it corresponds to the flow rate of 10 mL/min). For rice husks, the best yield of RS was 18.3 ± 2.3 g/100 g of rice husks (dry basis) in the condition of 220 °C / R-7.5. The analysis of the hydrolyzed medium by high performance liquid chromatography indicated the presence of arabinose, cellobiose, glucose and xylose, and also inhibitors such as furfural and hydroxymethylfufural. When the surface area for the hydrolyzed rice straw was evaluated, the best condition was 260°C / R-7.5, with a surface area of 10.60 m2/g. For rice husks, the highest surface area was 24.24 m2/g for the same condition: 260°C / R-7.5. The rice straw submitted to subcritical water hydrolysis at 180°C / R-7.5 (g water / g initial biomass) presented the highest adsorption capacity of 2-nitrophenol at pH 7 (92.97 ± 1.31 mg/g). |
id |
UFSM-20_d07db607a85d0103f10deff7f7e2bef0 |
---|---|
oai_identifier_str |
oai:repositorio.ufsm.br:1/16508 |
network_acronym_str |
UFSM-20 |
network_name_str |
Repositório Institucional Manancial UFSM |
repository_id_str |
3913 |
spelling |
2019-05-09T18:42:58Z2019-05-09T18:42:58Z2019-03-22http://repositorio.ufsm.br/handle/1/16508In this research, coproducts from rice harvesting and manufacturing, such as straw and husks, were submitted to subcritical water hydrolysis in order to obtain a hydrolyzed liquid containing fermentable sugars and a solid residue with an adsorption capacity higher than the fresh biomass. The assays were carried out at a laboratory-scale unit containing 50 mL hydrolysis reactor heated by thermal resistance, preheating baths, temperature sensors and controllers, pressure gauges, and pressure/flow control valves. The following process variables were studied: temperature (180, 220 and 260°C) and water / solids mass ratio (7.5 and 15 g water/g initial biomass). The pressure was set at 25 MPa and the total reaction time was defined as 15 minutes. Some responses were analyzed in order to identify the best process condition: reducing sugar (RS) yield, compositions of fermentable sugars and inhibitors, modification in the morphology and surface area of the hydrolyzed biomass, and residual adsorption capacity. In the experimental assays with rice straw, the highest RS yield of 33.4 ± 4.3 g/100 g rice straw (dry basis) was obtained at 220°C and water / solids mass ratio of 7.5 g water/g initial biomass (220°C / R-7.5; it corresponds to the flow rate of 10 mL/min). For rice husks, the best yield of RS was 18.3 ± 2.3 g/100 g of rice husks (dry basis) in the condition of 220 °C / R-7.5. The analysis of the hydrolyzed medium by high performance liquid chromatography indicated the presence of arabinose, cellobiose, glucose and xylose, and also inhibitors such as furfural and hydroxymethylfufural. When the surface area for the hydrolyzed rice straw was evaluated, the best condition was 260°C / R-7.5, with a surface area of 10.60 m2/g. For rice husks, the highest surface area was 24.24 m2/g for the same condition: 260°C / R-7.5. The rice straw submitted to subcritical water hydrolysis at 180°C / R-7.5 (g water / g initial biomass) presented the highest adsorption capacity of 2-nitrophenol at pH 7 (92.97 ± 1.31 mg/g).Nesta pesquisa, coprodutos da colheita e da manufatura do arroz, como palha e cascas, foram submetidos à hidrólise com água subcrítica com a finalidade de se obter um líquido hidrolisado contendo açúcares fermentescíveis e um resíduo sólido com capacidade de adsorção maior que a das biomassas in natura. Os ensaios foram realizados em uma unidade em escala de laboratório contendo um reator de hidrólise de 50 mL aquecido por resistência térmica, banhos de pré-aquecimento, sensores e controladores de temperatura, manômetros e válvulas de controle de pressão/vazão. Para os ensaios de hidrólise, foram estudadas as variáveis de processo: temperatura (180, 220 e 260°C) e razão mássica água/sólidos (7,5 e 15 g água/g biomassa inicial). A pressão foi fixada em 25 MPa e o tempo de reação total foi de 15 minutos. Várias respostas foram analisadas com o objetivo de verificar a melhor condição de processo, sendo as principais: rendimento cinético em açúcares redutores (AR), composições de açúcares fermentescíveis e inibidores, modificação na morfologia e na área superficial das biomassas hidrolisadas e capacidade de adsorção do sólido residual. Nos experimentos com palha de arroz, os resultados mostraram o maior rendimento de AR de 33,4 ± 4,3 g/100 g de palha de arroz em base seca sob 220°C e razão mássica água/sólidos de 7,5 g água/g biomassa inicial (220°C / R-7,5; corresponde à vazão de 10 mL/min). Para as cascas de arroz, os AR tiveram maior rendimento de 18,3 ± 2,3 g/100 g de cascas de arroz em base seca também na condição de 220°C / R-7,5. As análises do meio hidrolisado por cromatografia líquida de alta eficiência indicaram a presença de arabinose, celobiose, glicose e xilose, além de inibidores como furfural e hidroximetilfufural. Avaliando-se a área superficial para a palha de arroz hidrolisada, observou-se que a melhor condição foi a de 260°C / R-7,5, com área superficial de 10,60 m2/g. Para as cascas de arroz, a maior área superficial foi de 24,24 m2/g, verificada para a mesma condição: 260°C / R-7,5. A capacidade de adsorção dos sólidos restantes do processo de hidrólise subcrítica foi avaliada frente ao composto 2-nitrofenol. A palha de arroz submetida à hidrólise subcrítica na condição 180°C /R-7,5 apresentou maior capacidade de adsorção em pH 7 (92.97 ± 1.31 mg/g).porUniversidade 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/openAccessArrozCoprodutosIntegração de processosTecnologia subcríticaAdsorçãoRiceCoproductProcess integrationSubcritical technologyAdsorptionCNPQ::ENGENHARIAS::ENGENHARIA QUIMICAHidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorventeSubcritical hydrolysis of rice straw and husks for obtaining fermentable sugars and an adsorbent materialinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisMazutti, Marcio Antoniohttp://lattes.cnpq.br/3520282081196395Zabot, Giovani Leonehttp://lattes.cnpq.br/6573885187331634Dotto, Guilherme Luizhttp://lattes.cnpq.br/5412544199323879Mayer, Flávio Diashttp://lattes.cnpq.br/4268416135140359Moraes, Moysés Naves dehttp://lattes.cnpq.br/1103782342351837Bender, João Paulohttp://lattes.cnpq.br/9904923877551072http://lattes.cnpq.br/5024171488104537Abaide, Ederson Rossi3006000000066007d7d5001-84cd-4e08-9476-4ab9b3d8e95401d194b3-23e9-4981-8515-f3719e5367a3f1c7b486-2ac8-448b-941b-163453c85acfe0844fc7-d3e2-41b0-99b4-4470c9da324ca2b31fb8-f91b-4155-af63-e4a849dd148be95e5821-e141-49d3-9238-5d554207716ba29619e1-913c-4879-b640-6237f07eea29reponame:Repositório Institucional Manancial UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALTES_PPGEQ_2019_ABAIDE_EDERSON.pdfTES_PPGEQ_2019_ABAIDE_EDERSON.pdfTese de Doutoradoapplication/pdf5388651http://repositorio.ufsm.br/bitstream/1/16508/1/TES_PPGEQ_2019_ABAIDE_EDERSON.pdf4365eee2cb0b1f32d40d223ef444e8ebMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805http://repositorio.ufsm.br/bitstream/1/16508/2/license_rdf4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-816http://repositorio.ufsm.br/bitstream/1/16508/3/license.txtf8fcb28efb1c8cf0dc096bec902bf4c4MD53TEXTTES_PPGEQ_2019_ABAIDE_EDERSON.pdf.txtTES_PPGEQ_2019_ABAIDE_EDERSON.pdf.txtExtracted texttext/plain360266http://repositorio.ufsm.br/bitstream/1/16508/4/TES_PPGEQ_2019_ABAIDE_EDERSON.pdf.txtdeb3ade32bebc7e16bcb3d00ba8b0159MD54THUMBNAILTES_PPGEQ_2019_ABAIDE_EDERSON.pdf.jpgTES_PPGEQ_2019_ABAIDE_EDERSON.pdf.jpgIM Thumbnailimage/jpeg4337http://repositorio.ufsm.br/bitstream/1/16508/5/TES_PPGEQ_2019_ABAIDE_EDERSON.pdf.jpg2439e9cfd8bd7c34ac4c62c2ad802b8bMD551/165082019-05-10 03:02:22.785oai:repositorio.ufsm.br:1/16508Q3JlYXRpdmUgQ29tbW9ucw==Repositório Institucionalhttp://repositorio.ufsm.br/PUBhttp://repositorio.ufsm.br/oai/requestouvidoria@ufsm.bropendoar:39132019-05-10T06:02:22Repositório Institucional Manancial UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente |
dc.title.alternative.eng.fl_str_mv |
Subcritical hydrolysis of rice straw and husks for obtaining fermentable sugars and an adsorbent material |
title |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente |
spellingShingle |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente Abaide, Ederson Rossi Arroz Coprodutos Integração de processos Tecnologia subcrítica Adsorção Rice Coproduct Process integration Subcritical technology Adsorption CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
title_short |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente |
title_full |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente |
title_fullStr |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente |
title_full_unstemmed |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente |
title_sort |
Hidrólise subcrítica de palha e cascas de arroz para obtenção integrada de açúcares fermentescíveis e material adsorvente |
author |
Abaide, Ederson Rossi |
author_facet |
Abaide, Ederson Rossi |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Mazutti, Marcio Antonio |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/3520282081196395 |
dc.contributor.advisor-co1.fl_str_mv |
Zabot, Giovani Leone |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/6573885187331634 |
dc.contributor.referee1.fl_str_mv |
Dotto, Guilherme Luiz |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/5412544199323879 |
dc.contributor.referee2.fl_str_mv |
Mayer, Flávio Dias |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/4268416135140359 |
dc.contributor.referee3.fl_str_mv |
Moraes, Moysés Naves de |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/1103782342351837 |
dc.contributor.referee4.fl_str_mv |
Bender, João Paulo |
dc.contributor.referee4Lattes.fl_str_mv |
http://lattes.cnpq.br/9904923877551072 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/5024171488104537 |
dc.contributor.author.fl_str_mv |
Abaide, Ederson Rossi |
contributor_str_mv |
Mazutti, Marcio Antonio Zabot, Giovani Leone Dotto, Guilherme Luiz Mayer, Flávio Dias Moraes, Moysés Naves de Bender, João Paulo |
dc.subject.por.fl_str_mv |
Arroz Coprodutos Integração de processos Tecnologia subcrítica Adsorção |
topic |
Arroz Coprodutos Integração de processos Tecnologia subcrítica Adsorção Rice Coproduct Process integration Subcritical technology Adsorption CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
dc.subject.eng.fl_str_mv |
Rice Coproduct Process integration Subcritical technology Adsorption |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA |
description |
In this research, coproducts from rice harvesting and manufacturing, such as straw and husks, were submitted to subcritical water hydrolysis in order to obtain a hydrolyzed liquid containing fermentable sugars and a solid residue with an adsorption capacity higher than the fresh biomass. The assays were carried out at a laboratory-scale unit containing 50 mL hydrolysis reactor heated by thermal resistance, preheating baths, temperature sensors and controllers, pressure gauges, and pressure/flow control valves. The following process variables were studied: temperature (180, 220 and 260°C) and water / solids mass ratio (7.5 and 15 g water/g initial biomass). The pressure was set at 25 MPa and the total reaction time was defined as 15 minutes. Some responses were analyzed in order to identify the best process condition: reducing sugar (RS) yield, compositions of fermentable sugars and inhibitors, modification in the morphology and surface area of the hydrolyzed biomass, and residual adsorption capacity. In the experimental assays with rice straw, the highest RS yield of 33.4 ± 4.3 g/100 g rice straw (dry basis) was obtained at 220°C and water / solids mass ratio of 7.5 g water/g initial biomass (220°C / R-7.5; it corresponds to the flow rate of 10 mL/min). For rice husks, the best yield of RS was 18.3 ± 2.3 g/100 g of rice husks (dry basis) in the condition of 220 °C / R-7.5. The analysis of the hydrolyzed medium by high performance liquid chromatography indicated the presence of arabinose, cellobiose, glucose and xylose, and also inhibitors such as furfural and hydroxymethylfufural. When the surface area for the hydrolyzed rice straw was evaluated, the best condition was 260°C / R-7.5, with a surface area of 10.60 m2/g. For rice husks, the highest surface area was 24.24 m2/g for the same condition: 260°C / R-7.5. The rice straw submitted to subcritical water hydrolysis at 180°C / R-7.5 (g water / g initial biomass) presented the highest adsorption capacity of 2-nitrophenol at pH 7 (92.97 ± 1.31 mg/g). |
publishDate |
2019 |
dc.date.accessioned.fl_str_mv |
2019-05-09T18:42:58Z |
dc.date.available.fl_str_mv |
2019-05-09T18:42:58Z |
dc.date.issued.fl_str_mv |
2019-03-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/16508 |
url |
http://repositorio.ufsm.br/handle/1/16508 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.cnpq.fl_str_mv |
300600000006 |
dc.relation.confidence.fl_str_mv |
600 |
dc.relation.authority.fl_str_mv |
7d7d5001-84cd-4e08-9476-4ab9b3d8e954 01d194b3-23e9-4981-8515-f3719e5367a3 f1c7b486-2ac8-448b-941b-163453c85acf e0844fc7-d3e2-41b0-99b4-4470c9da324c a2b31fb8-f91b-4155-af63-e4a849dd148b e95e5821-e141-49d3-9238-5d554207716b a29619e1-913c-4879-b640-6237f07eea29 |
dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
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 |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional Manancial UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Repositório Institucional Manancial UFSM |
collection |
Repositório Institucional Manancial UFSM |
bitstream.url.fl_str_mv |
http://repositorio.ufsm.br/bitstream/1/16508/1/TES_PPGEQ_2019_ABAIDE_EDERSON.pdf http://repositorio.ufsm.br/bitstream/1/16508/2/license_rdf http://repositorio.ufsm.br/bitstream/1/16508/3/license.txt http://repositorio.ufsm.br/bitstream/1/16508/4/TES_PPGEQ_2019_ABAIDE_EDERSON.pdf.txt http://repositorio.ufsm.br/bitstream/1/16508/5/TES_PPGEQ_2019_ABAIDE_EDERSON.pdf.jpg |
bitstream.checksum.fl_str_mv |
4365eee2cb0b1f32d40d223ef444e8eb 4460e5956bc1d1639be9ae6146a50347 f8fcb28efb1c8cf0dc096bec902bf4c4 deb3ade32bebc7e16bcb3d00ba8b0159 2439e9cfd8bd7c34ac4c62c2ad802b8b |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional Manancial UFSM - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
ouvidoria@ufsm.br |
_version_ |
1808854731654692864 |