Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes

Comparative study of pulp yield of sap wood and heart wood of Populus deltoides under both Kraft and soda cooking process have been showed that the heart wood pulp has a lower yield than that of sap wood pulp. Yield of heart wood and sap wood soda pulps was 4 percentages higher than Kraft pulp. Cont...

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Autores principales:	Somayeh Ghasemi, Ahmad reza Saraeyan
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2010
Materias:	Populous deltoides Heart wood Sap wood Pulp yield Kraft cooking Soda cooking kappa number Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/8130a00f055f46c08cdd8032998d443b
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spelling	oai:doaj.org-article:8130a00f055f46c08cdd8032998d443b2021-12-02T02:41:43ZComparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes1735-09132383-112X10.22092/ijwpr.2010.117275https://doaj.org/article/8130a00f055f46c08cdd8032998d443b2010-03-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117275_0c41026c9a7ccb6adbccef311c8d9324.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XComparative study of pulp yield of sap wood and heart wood of Populus deltoides under both Kraft and soda cooking process have been showed that the heart wood pulp has a lower yield than that of sap wood pulp. Yield of heart wood and sap wood soda pulps was 4 percentages higher than Kraft pulp. Contrary to yield, residual lignin content (Kappa number) is more in heart wood pulp than sap wood pulp in both processes. Kappa numbers of heart wood and sap wood Kraft pulps were about 34% lower than soda pulps. The results showed that in spite of lower yield of heart wood than sap wood, the residual lignin of heart wood pulp was more than sap wood pulp. The higher delignification efficiency of Kraft cooking is related to cooking liquor compositions, especially Na2SSomayeh GhasemiAhmad reza SaraeyanRegional Information Center for Science and Technology (RICeST)articlePopulous deltoidesHeart woodSap woodPulp yieldKraft cookingSoda cookingkappa numberForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 25, Iss 1, Pp 138-146 (2010)
institution	DOAJ
collection	DOAJ
language	FA
topic	Populous deltoides Heart wood Sap wood Pulp yield Kraft cooking Soda cooking kappa number Forestry SD1-669.5
spellingShingle	Populous deltoides Heart wood Sap wood Pulp yield Kraft cooking Soda cooking kappa number Forestry SD1-669.5 Somayeh Ghasemi Ahmad reza Saraeyan Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes
description	Comparative study of pulp yield of sap wood and heart wood of Populus deltoides under both Kraft and soda cooking process have been showed that the heart wood pulp has a lower yield than that of sap wood pulp. Yield of heart wood and sap wood soda pulps was 4 percentages higher than Kraft pulp. Contrary to yield, residual lignin content (Kappa number) is more in heart wood pulp than sap wood pulp in both processes. Kappa numbers of heart wood and sap wood Kraft pulps were about 34% lower than soda pulps. The results showed that in spite of lower yield of heart wood than sap wood, the residual lignin of heart wood pulp was more than sap wood pulp. The higher delignification efficiency of Kraft cooking is related to cooking liquor compositions, especially Na2S
format	article
author	Somayeh Ghasemi Ahmad reza Saraeyan
author_facet	Somayeh Ghasemi Ahmad reza Saraeyan
author_sort	Somayeh Ghasemi
title	Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes
title_short	Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes
title_full	Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes
title_fullStr	Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes
title_full_unstemmed	Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes
title_sort	comparative study of delignification efficiency and pulp yield of heart wood and sap wood of populus deltoids by kraft and soda processes
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2010
url	https://doaj.org/article/8130a00f055f46c08cdd8032998d443b
work_keys_str_mv	AT somayehghasemi comparativestudyofdelignificationefficiencyandpulpyieldofheartwoodandsapwoodofpopulusdeltoidsbykraftandsodaprocesses AT ahmadrezasaraeyan comparativestudyofdelignificationefficiencyandpulpyieldofheartwoodandsapwoodofpopulusdeltoidsbykraftandsodaprocesses
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Comparative study of delignification efficiency and pulp yield of heart wood and sap wood of Populus deltoids by kraft and soda processes

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