Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties

The first act to ameliorate bleaching process is the major elimination of lignin. Actually, the use of oxygen delignification stage before bleaching process is the essential stage in improving bleaching process and reducing process emission. In this study, the effect of conducting oxygen-delignifyin...

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Autores principales:	Farhad Zeinaly, Ali Kazemi Tabrizi, yashar Einollahi, Faraz Asadi Malek Jahan
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2018
Materias:	Oxygen delignification kenaf bast kraft pulp kappa number viscosity effluent Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/c3c92b7bb07249e6afa1a4d5ae60f554
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spelling	oai:doaj.org-article:c3c92b7bb07249e6afa1a4d5ae60f5542021-12-02T09:11:22ZInvestigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties1735-09132383-112X10.22092/ijwpr.2018.120935.1464https://doaj.org/article/c3c92b7bb07249e6afa1a4d5ae60f5542018-11-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_116677_32f6888c209d257babdf4cc5122c1220.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThe first act to ameliorate bleaching process is the major elimination of lignin. Actually, the use of oxygen delignification stage before bleaching process is the essential stage in improving bleaching process and reducing process emission. In this study, the effect of conducting oxygen-delignifying process under different process condition, on chemical, physical, mechanical and optical properties of kenaf bast kraft pulp was investigated. The kenaf bast kraft pulp with the kappa number of 22, 1154 ml/g viscosity, and 38% ISO brightness was prepared. Oxygen-delignifying treatments were carried out with three different temperatures of 90, 100 and 110°C, and two oxygen pressures of 5 and 7 bars, with and without magnesium sulfate addition. Results indicated that oxygen delignification treatment led to intense decrease in pulp kappa number, while the pulp viscosity did not change significantly. Results of measuring delignified pulp viscosity showed that the magnesium sulfate addition caused to prevention of pulp viscosity downfall. The increase in reaction temperature had a significant effect on the process improvement, but raising the oxygen pressure did not have a meaningful effect on the process. Also, the pulp brightness was increased about 7%.Farhad ZeinalyAli Kazemi Tabriziyashar EinollahiFaraz Asadi Malek JahanRegional Information Center for Science and Technology (RICeST)articleOxygen delignificationkenaf bast kraft pulpkappa numberviscosityeffluentForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 33, Iss 3, Pp 369-380 (2018)
institution	DOAJ
collection	DOAJ
language	FA
topic	Oxygen delignification kenaf bast kraft pulp kappa number viscosity effluent Forestry SD1-669.5
spellingShingle	Oxygen delignification kenaf bast kraft pulp kappa number viscosity effluent Forestry SD1-669.5 Farhad Zeinaly Ali Kazemi Tabrizi yashar Einollahi Faraz Asadi Malek Jahan Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties
description	The first act to ameliorate bleaching process is the major elimination of lignin. Actually, the use of oxygen delignification stage before bleaching process is the essential stage in improving bleaching process and reducing process emission. In this study, the effect of conducting oxygen-delignifying process under different process condition, on chemical, physical, mechanical and optical properties of kenaf bast kraft pulp was investigated. The kenaf bast kraft pulp with the kappa number of 22, 1154 ml/g viscosity, and 38% ISO brightness was prepared. Oxygen-delignifying treatments were carried out with three different temperatures of 90, 100 and 110°C, and two oxygen pressures of 5 and 7 bars, with and without magnesium sulfate addition. Results indicated that oxygen delignification treatment led to intense decrease in pulp kappa number, while the pulp viscosity did not change significantly. Results of measuring delignified pulp viscosity showed that the magnesium sulfate addition caused to prevention of pulp viscosity downfall. The increase in reaction temperature had a significant effect on the process improvement, but raising the oxygen pressure did not have a meaningful effect on the process. Also, the pulp brightness was increased about 7%.
format	article
author	Farhad Zeinaly Ali Kazemi Tabrizi yashar Einollahi Faraz Asadi Malek Jahan
author_facet	Farhad Zeinaly Ali Kazemi Tabrizi yashar Einollahi Faraz Asadi Malek Jahan
author_sort	Farhad Zeinaly
title	Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties
title_short	Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties
title_full	Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties
title_fullStr	Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties
title_full_unstemmed	Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties
title_sort	investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2018
url	https://doaj.org/article/c3c92b7bb07249e6afa1a4d5ae60f554
work_keys_str_mv	AT farhadzeinaly investigatingtheeffectofusingoxygendelignificationprocessonkenafbastkraftpulpproperties AT alikazemitabrizi investigatingtheeffectofusingoxygendelignificationprocessonkenafbastkraftpulpproperties AT yashareinollahi investigatingtheeffectofusingoxygendelignificationprocessonkenafbastkraftpulpproperties AT farazasadimalekjahan investigatingtheeffectofusingoxygendelignificationprocessonkenafbastkraftpulpproperties
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Investigating the effect of using oxygen delignification process on kenaf bast kraft pulp properties

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