A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1806-90882018000500005 http://hdl.handle.net/11449/185057 |
Resumo: | The kraft pulp of Eucalyptus spp. is relatively easy to be bleached. Therefore, studies have been carried out to reduce the number of stages of bleaching in the plant and minimize process costs. The present work aimed to evaluate the use of two short bleaching sequences in the physico-mechanical properties of cellulosic pulp as well as to compare these values to the ones obtained by usual bleaching sequences. The four bleaching sequences were ECF (elemental chlorine free), D-0(E+P)D1P, A(HT)D(0)(E+P)D1P, and A(HT)DP and A(HT)D (PO). For each bleaching sequence the brightness, brightness reversion and total cost of reagents were evaluated. Physical and mechanical analyses were performed according to the methodologies of the Technical Association of the Pulp and Paper Industry (TAPPI, 2002). The A(HT)D (PO) sequence showed higher brightness, less brightness reversion, lower total cost and better smoothness compared to the reference sequences. However, it had a lower tear index and a lower compression index. The A(HT)DP sequence did not reach target brightness, however, it presented brightness reversion and lower total cost than the reference sequences. The A(HT)DP sequences showed high compression and smoothness, but presented a low compression index. |
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A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCESCelluloseEucalyptusShort sequencesElemental chlorine free bleachingThe kraft pulp of Eucalyptus spp. is relatively easy to be bleached. Therefore, studies have been carried out to reduce the number of stages of bleaching in the plant and minimize process costs. The present work aimed to evaluate the use of two short bleaching sequences in the physico-mechanical properties of cellulosic pulp as well as to compare these values to the ones obtained by usual bleaching sequences. The four bleaching sequences were ECF (elemental chlorine free), D-0(E+P)D1P, A(HT)D(0)(E+P)D1P, and A(HT)DP and A(HT)D (PO). For each bleaching sequence the brightness, brightness reversion and total cost of reagents were evaluated. Physical and mechanical analyses were performed according to the methodologies of the Technical Association of the Pulp and Paper Industry (TAPPI, 2002). The A(HT)D (PO) sequence showed higher brightness, less brightness reversion, lower total cost and better smoothness compared to the reference sequences. However, it had a lower tear index and a lower compression index. The A(HT)DP sequence did not reach target brightness, however, it presented brightness reversion and lower total cost than the reference sequences. The A(HT)DP sequences showed high compression and smoothness, but presented a low compression index.Univ Estadual Paulista, Programa Posgrad Engn Mecan, Guaratingueta, SP, BrazilUniv Estadual Paulista, Dept Engn Ind Madeireira, Itapeva, SP, BrazilUniv Estadual Paulista, Programa Posgrad Engn Mecan, Guaratingueta, SP, BrazilUniv Estadual Paulista, Dept Engn Ind Madeireira, Itapeva, SP, BrazilUniv Federal VicosaUniversidade Estadual Paulista (Unesp)Almeida Ferraz, Ana Paula [UNESP]Ventorim, Gustavo [UNESP]2019-10-04T12:32:17Z2019-10-04T12:32:17Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article6application/pdfhttp://dx.doi.org/10.1590/1806-90882018000500005Revista Arvore. Vicosa: Univ Federal Vicosa, v. 42, n. 5, 6 p., 2018.0100-6762http://hdl.handle.net/11449/18505710.1590/1806-90882018000500005S0100-67622018000500204WOS:000450123800005S0100-67622018000500204.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Arvoreinfo:eu-repo/semantics/openAccess2024-07-01T20:32:31Zoai:repositorio.unesp.br:11449/185057Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:10:13.022921Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES |
title |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES |
spellingShingle |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES Almeida Ferraz, Ana Paula [UNESP] Cellulose Eucalyptus Short sequences Elemental chlorine free bleaching |
title_short |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES |
title_full |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES |
title_fullStr |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES |
title_full_unstemmed |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES |
title_sort |
A STUDY OF THE PHYSICO-MECHANICAL PROPERTIES IN SHORT BLEACHING SEQUENCES |
author |
Almeida Ferraz, Ana Paula [UNESP] |
author_facet |
Almeida Ferraz, Ana Paula [UNESP] Ventorim, Gustavo [UNESP] |
author_role |
author |
author2 |
Ventorim, Gustavo [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Almeida Ferraz, Ana Paula [UNESP] Ventorim, Gustavo [UNESP] |
dc.subject.por.fl_str_mv |
Cellulose Eucalyptus Short sequences Elemental chlorine free bleaching |
topic |
Cellulose Eucalyptus Short sequences Elemental chlorine free bleaching |
description |
The kraft pulp of Eucalyptus spp. is relatively easy to be bleached. Therefore, studies have been carried out to reduce the number of stages of bleaching in the plant and minimize process costs. The present work aimed to evaluate the use of two short bleaching sequences in the physico-mechanical properties of cellulosic pulp as well as to compare these values to the ones obtained by usual bleaching sequences. The four bleaching sequences were ECF (elemental chlorine free), D-0(E+P)D1P, A(HT)D(0)(E+P)D1P, and A(HT)DP and A(HT)D (PO). For each bleaching sequence the brightness, brightness reversion and total cost of reagents were evaluated. Physical and mechanical analyses were performed according to the methodologies of the Technical Association of the Pulp and Paper Industry (TAPPI, 2002). The A(HT)D (PO) sequence showed higher brightness, less brightness reversion, lower total cost and better smoothness compared to the reference sequences. However, it had a lower tear index and a lower compression index. The A(HT)DP sequence did not reach target brightness, however, it presented brightness reversion and lower total cost than the reference sequences. The A(HT)DP sequences showed high compression and smoothness, but presented a low compression index. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 2019-10-04T12:32:17Z 2019-10-04T12:32:17Z |
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/10.1590/1806-90882018000500005 Revista Arvore. Vicosa: Univ Federal Vicosa, v. 42, n. 5, 6 p., 2018. 0100-6762 http://hdl.handle.net/11449/185057 10.1590/1806-90882018000500005 S0100-67622018000500204 WOS:000450123800005 S0100-67622018000500204.pdf |
url |
http://dx.doi.org/10.1590/1806-90882018000500005 http://hdl.handle.net/11449/185057 |
identifier_str_mv |
Revista Arvore. Vicosa: Univ Federal Vicosa, v. 42, n. 5, 6 p., 2018. 0100-6762 10.1590/1806-90882018000500005 S0100-67622018000500204 WOS:000450123800005 S0100-67622018000500204.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Arvore |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
6 application/pdf |
dc.publisher.none.fl_str_mv |
Univ Federal Vicosa |
publisher.none.fl_str_mv |
Univ Federal Vicosa |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808129293365018624 |