Mixture and motion of sugar cane bagasse in a rotating drum
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.powtec.2017.05.006 http://hdl.handle.net/11449/174590 |
Resumo: | The mixture and motion of fibrous particles of sugar cane bagasse were experimentally investigated in a rotating drum, a configuration frequently used for bioreactors in solid-state fermentation processes. The rotational velocity, filling degree and presence of an inner tube amidst the particles were the controlled variables. The image analysis technique was used to evaluate the radial and axial mixtures. The numbers of rotations used to achieve radial and axial homogeneities were obtained and the radial particle motion described. The minimum numbers of rotations for radial homogeneity were 12, 15 and 17 for filling degrees of 0.3, 0.5 and 0.6, respectively and this number was not influenced by the presence of the inner tube and the rotation velocity. The radial motion was influenced by all the variables and the flow regimes observed were distinct from those previously described in the literature. The passive layer did not behave as a solid body under any of the experimental conditions tested in the absence of the inner tube. When the tube was inserted, stagnant and fast velocities were observed in its vicinity and a porosity profile was noted in the stagnant zone. For both configurations, agglomerates of particles flowed down the free surface rather than a steady flow of particles. The axial diffusion coefficient was experimentally obtained and the simulated tracer concentration presented good agreement with the experimental results. |
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Mixture and motion of sugar cane bagasse in a rotating drumImage analysisMixture and motionRotating drumSugarcane bagasseTracer techniqueThe mixture and motion of fibrous particles of sugar cane bagasse were experimentally investigated in a rotating drum, a configuration frequently used for bioreactors in solid-state fermentation processes. The rotational velocity, filling degree and presence of an inner tube amidst the particles were the controlled variables. The image analysis technique was used to evaluate the radial and axial mixtures. The numbers of rotations used to achieve radial and axial homogeneities were obtained and the radial particle motion described. The minimum numbers of rotations for radial homogeneity were 12, 15 and 17 for filling degrees of 0.3, 0.5 and 0.6, respectively and this number was not influenced by the presence of the inner tube and the rotation velocity. The radial motion was influenced by all the variables and the flow regimes observed were distinct from those previously described in the literature. The passive layer did not behave as a solid body under any of the experimental conditions tested in the absence of the inner tube. When the tube was inserted, stagnant and fast velocities were observed in its vicinity and a porosity profile was noted in the stagnant zone. For both configurations, agglomerates of particles flowed down the free surface rather than a steady flow of particles. The axial diffusion coefficient was experimentally obtained and the simulated tracer concentration presented good agreement with the experimental results.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Departamento de Engenharia e Tecnologia de Alimentos Instituto de Biociências Letras e Ciências Exatas Universidade Estadual de São Paulo (UNESP), Cristóvão Colombo 2265, Jardim NazarethDepartamento de Engenharia de Alimentos Universidade Federal do Tocantins, Quadra 109 Norte Avenida NS 15Departamento de Engenharia e Tecnologia de Alimentos Instituto de Biociências Letras e Ciências Exatas Universidade Estadual de São Paulo (UNESP), Cristóvão Colombo 2265, Jardim NazarethFAPESP: 2014/23453-3CAPES: 33004153070P-2Universidade Estadual Paulista (Unesp)Universidade Federal do TocantinsTada, Érika Fernanda Rezendes [UNESP]Grajales, Lina MariaLemos, Yuri Pessoa [UNESP]Thoméo, João Cláudio [UNESP]2018-12-11T17:12:00Z2018-12-11T17:12:00Z2017-07-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article301-309application/pdfhttp://dx.doi.org/10.1016/j.powtec.2017.05.006Powder Technology, v. 317, p. 301-309.1873-328X0032-5910http://hdl.handle.net/11449/17459010.1016/j.powtec.2017.05.0062-s2.0-850194103982-s2.0-85019410398.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPowder Technology0,982info:eu-repo/semantics/openAccess2023-11-09T06:09:26Zoai:repositorio.unesp.br:11449/174590Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-11-09T06:09:26Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mixture and motion of sugar cane bagasse in a rotating drum |
title |
Mixture and motion of sugar cane bagasse in a rotating drum |
spellingShingle |
Mixture and motion of sugar cane bagasse in a rotating drum Tada, Érika Fernanda Rezendes [UNESP] Image analysis Mixture and motion Rotating drum Sugarcane bagasse Tracer technique |
title_short |
Mixture and motion of sugar cane bagasse in a rotating drum |
title_full |
Mixture and motion of sugar cane bagasse in a rotating drum |
title_fullStr |
Mixture and motion of sugar cane bagasse in a rotating drum |
title_full_unstemmed |
Mixture and motion of sugar cane bagasse in a rotating drum |
title_sort |
Mixture and motion of sugar cane bagasse in a rotating drum |
author |
Tada, Érika Fernanda Rezendes [UNESP] |
author_facet |
Tada, Érika Fernanda Rezendes [UNESP] Grajales, Lina Maria Lemos, Yuri Pessoa [UNESP] Thoméo, João Cláudio [UNESP] |
author_role |
author |
author2 |
Grajales, Lina Maria Lemos, Yuri Pessoa [UNESP] Thoméo, João Cláudio [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal do Tocantins |
dc.contributor.author.fl_str_mv |
Tada, Érika Fernanda Rezendes [UNESP] Grajales, Lina Maria Lemos, Yuri Pessoa [UNESP] Thoméo, João Cláudio [UNESP] |
dc.subject.por.fl_str_mv |
Image analysis Mixture and motion Rotating drum Sugarcane bagasse Tracer technique |
topic |
Image analysis Mixture and motion Rotating drum Sugarcane bagasse Tracer technique |
description |
The mixture and motion of fibrous particles of sugar cane bagasse were experimentally investigated in a rotating drum, a configuration frequently used for bioreactors in solid-state fermentation processes. The rotational velocity, filling degree and presence of an inner tube amidst the particles were the controlled variables. The image analysis technique was used to evaluate the radial and axial mixtures. The numbers of rotations used to achieve radial and axial homogeneities were obtained and the radial particle motion described. The minimum numbers of rotations for radial homogeneity were 12, 15 and 17 for filling degrees of 0.3, 0.5 and 0.6, respectively and this number was not influenced by the presence of the inner tube and the rotation velocity. The radial motion was influenced by all the variables and the flow regimes observed were distinct from those previously described in the literature. The passive layer did not behave as a solid body under any of the experimental conditions tested in the absence of the inner tube. When the tube was inserted, stagnant and fast velocities were observed in its vicinity and a porosity profile was noted in the stagnant zone. For both configurations, agglomerates of particles flowed down the free surface rather than a steady flow of particles. The axial diffusion coefficient was experimentally obtained and the simulated tracer concentration presented good agreement with the experimental results. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-07-15 2018-12-11T17:12:00Z 2018-12-11T17:12:00Z |
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 |
http://dx.doi.org/10.1016/j.powtec.2017.05.006 Powder Technology, v. 317, p. 301-309. 1873-328X 0032-5910 http://hdl.handle.net/11449/174590 10.1016/j.powtec.2017.05.006 2-s2.0-85019410398 2-s2.0-85019410398.pdf |
url |
http://dx.doi.org/10.1016/j.powtec.2017.05.006 http://hdl.handle.net/11449/174590 |
identifier_str_mv |
Powder Technology, v. 317, p. 301-309. 1873-328X 0032-5910 10.1016/j.powtec.2017.05.006 2-s2.0-85019410398 2-s2.0-85019410398.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Powder Technology 0,982 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
301-309 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803649659736948736 |