The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp

The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp

Our previous paper showed fragmentary evidence that pulp brightness reversion may be negatively affected by its organically bound chlorine (OX) content. A thorough investigation on eucalyptus kraft pulp led to the conclusion that OX increases reversion of certain pulps but this trend is not universal. Alkaline bleaching stages decrease reversion regardless of pulp OX content. Pulps bleached with high temperature chlorine dioxide revert less than those bleached with conventional chlorine dioxide in sequences ending with a chlorine dioxide stage but similarly in sequences ending with a final peroxide stage. The use of secondary condensate for pulp washing decreases reversion.

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Bibliographic Details
Main Authors: Eiras,Kátia Maria Morais, Colodette,Jorge Luiz, Silva,Vanessa Lopes
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Química 2009
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000100010
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spelling oai:scielo:S0100-404220090001000102009-02-26The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulpEiras,Kátia Maria MoraisColodette,Jorge LuizSilva,Vanessa Lopes eucalyptus OX brightness reversion Our previous paper showed fragmentary evidence that pulp brightness reversion may be negatively affected by its organically bound chlorine (OX) content. A thorough investigation on eucalyptus kraft pulp led to the conclusion that OX increases reversion of certain pulps but this trend is not universal. Alkaline bleaching stages decrease reversion regardless of pulp OX content. Pulps bleached with high temperature chlorine dioxide revert less than those bleached with conventional chlorine dioxide in sequences ending with a chlorine dioxide stage but similarly in sequences ending with a final peroxide stage. The use of secondary condensate for pulp washing decreases reversion.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaQuímica Nova v.32 n.1 20092009-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000100010en10.1590/S0100-40422009000100010
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Eiras,Kátia Maria Morais
Colodette,Jorge Luiz
Silva,Vanessa Lopes
spellingShingle Eiras,Kátia Maria Morais
Colodette,Jorge Luiz
Silva,Vanessa Lopes
The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp
author_facet Eiras,Kátia Maria Morais
Colodette,Jorge Luiz
Silva,Vanessa Lopes
author_sort Eiras,Kátia Maria Morais
title The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp
title_short The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp
title_full The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp
title_fullStr The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp
title_full_unstemmed The role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp
title_sort role of bound chlorine in the brightness reversion of bleached hardwood kraft pulp
description Our previous paper showed fragmentary evidence that pulp brightness reversion may be negatively affected by its organically bound chlorine (OX) content. A thorough investigation on eucalyptus kraft pulp led to the conclusion that OX increases reversion of certain pulps but this trend is not universal. Alkaline bleaching stages decrease reversion regardless of pulp OX content. Pulps bleached with high temperature chlorine dioxide revert less than those bleached with conventional chlorine dioxide in sequences ending with a chlorine dioxide stage but similarly in sequences ending with a final peroxide stage. The use of secondary condensate for pulp washing decreases reversion.
publisher Sociedade Brasileira de Química
publishDate 2009
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422009000100010
work_keys_str_mv AT eiraskatiamariamorais theroleofboundchlorineinthebrightnessreversionofbleachedhardwoodkraftpulp
AT colodettejorgeluiz theroleofboundchlorineinthebrightnessreversionofbleachedhardwoodkraftpulp
AT silvavanessalopes theroleofboundchlorineinthebrightnessreversionofbleachedhardwoodkraftpulp
AT eiraskatiamariamorais roleofboundchlorineinthebrightnessreversionofbleachedhardwoodkraftpulp
AT colodettejorgeluiz roleofboundchlorineinthebrightnessreversionofbleachedhardwoodkraftpulp
AT silvavanessalopes roleofboundchlorineinthebrightnessreversionofbleachedhardwoodkraftpulp
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