Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp

Detalhes bibliográficos
Autor(a) principal: Ribeiro,Robisnéa A.
Data de Publicação: 2014
Outros Autores: Gomes,Fernando J. B., Floriani,José N., Damásio,Renato A. P., Demuner,Iara F., Colodette,Jorge L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014001000013
Resumo: It is well known that pH is an important parameter for controlling the eucalyptus pulp bleaching when using the final chlorine dioxide stage, since it affects the effectiveness of the process. Recommendations found in the literature for operating are in the 3.5 to 4.0 range. However, in this paper it was shown that final chlorine dioxide has better performance, with significant brightness gain while also preserving pulp quality, when it is operated at near neutral pH. This result can be explained by the generation of sodium bicarbonate in situ upon adding carbon dioxide at this stage.
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spelling Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulpeucalyptusbleachingbufferingpulpIt is well known that pH is an important parameter for controlling the eucalyptus pulp bleaching when using the final chlorine dioxide stage, since it affects the effectiveness of the process. Recommendations found in the literature for operating are in the 3.5 to 4.0 range. However, in this paper it was shown that final chlorine dioxide has better performance, with significant brightness gain while also preserving pulp quality, when it is operated at near neutral pH. This result can be explained by the generation of sodium bicarbonate in situ upon adding carbon dioxide at this stage.Sociedade Brasileira de Química2014-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014001000013Química Nova v.37 n.10 2014reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0100-4042.20140251info:eu-repo/semantics/openAccessRibeiro,Robisnéa A.Gomes,Fernando J. B.Floriani,José N.Damásio,Renato A. P.Demuner,Iara F.Colodette,Jorge L.eng2014-11-28T00:00:00Zoai:scielo:S0100-40422014001000013Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2014-11-28T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
title Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
spellingShingle Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
Ribeiro,Robisnéa A.
eucalyptus
bleaching
buffering
pulp
title_short Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
title_full Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
title_fullStr Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
title_full_unstemmed Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
title_sort Final chlorine dioxide stage at near-neutral pH for bleaching eucalypt pulp
author Ribeiro,Robisnéa A.
author_facet Ribeiro,Robisnéa A.
Gomes,Fernando J. B.
Floriani,José N.
Damásio,Renato A. P.
Demuner,Iara F.
Colodette,Jorge L.
author_role author
author2 Gomes,Fernando J. B.
Floriani,José N.
Damásio,Renato A. P.
Demuner,Iara F.
Colodette,Jorge L.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Ribeiro,Robisnéa A.
Gomes,Fernando J. B.
Floriani,José N.
Damásio,Renato A. P.
Demuner,Iara F.
Colodette,Jorge L.
dc.subject.por.fl_str_mv eucalyptus
bleaching
buffering
pulp
topic eucalyptus
bleaching
buffering
pulp
description It is well known that pH is an important parameter for controlling the eucalyptus pulp bleaching when using the final chlorine dioxide stage, since it affects the effectiveness of the process. Recommendations found in the literature for operating are in the 3.5 to 4.0 range. However, in this paper it was shown that final chlorine dioxide has better performance, with significant brightness gain while also preserving pulp quality, when it is operated at near neutral pH. This result can be explained by the generation of sodium bicarbonate in situ upon adding carbon dioxide at this stage.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014001000013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422014001000013
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0100-4042.20140251
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.37 n.10 2014
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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