Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods

Strength properties and the yield of soda and soda-ethanol pulps produced using hornbeam, beech and poplar woods were investigated. Soda pulps were produced applying 20% active alkali and the soda-ethanol pulps were made using 10% active alkali and 50% ethanol. The pulping temperature was constant a...

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Autores principales:	Hosein Valayi, Ahmad Jahan Latibari
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2015
Materias:	delignification SODA soda-ethanol kappa number yield Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/4713a23bd73544a39f6fb3c04fdabccd
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spelling	oai:doaj.org-article:4713a23bd73544a39f6fb3c04fdabccd2021-12-02T05:06:01ZComparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods1735-09132383-112X10.22092/ijwpr.2015.12993https://doaj.org/article/4713a23bd73544a39f6fb3c04fdabccd2015-09-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_12993_85e49ca9d6d0582380187e4b7b7f538a.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XStrength properties and the yield of soda and soda-ethanol pulps produced using hornbeam, beech and poplar woods were investigated. Soda pulps were produced applying 20% active alkali and the soda-ethanol pulps were made using 10% active alkali and 50% ethanol. The pulping temperature was constant at 175 C and the soda pulping time was selected at 120 minutes and the soda-ethanol pulping times were 120 and 180 minutes. The highest accepted pulping yield at 58.54% was reached using soda pulping on poplar wood and the lowest yield (49.29%) was related to soda-ethanol pulp produced from beech wood applying 180 minutes pulping time. The accepted yield of soda-ethanol pulping was low, but the kappa numbers of these pulps were almost 20 units lower than soda pulps. The strength properties of soda-ethanol pulps were superior to soda pulps and the difference was statistically significant at 99% confidence level. The results of this study indicated that the delignification of soda-ethanol pulping process is faster than soda pulping from the selected hardwoods especially poplar wood.Hosein ValayiAhmad Jahan LatibariRegional Information Center for Science and Technology (RICeST)articledelignificationSODAsoda-ethanolkappa numberyieldForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 30, Iss 3, Pp 399-407 (2015)
institution	DOAJ
collection	DOAJ
language	FA
topic	delignification SODA soda-ethanol kappa number yield Forestry SD1-669.5
spellingShingle	delignification SODA soda-ethanol kappa number yield Forestry SD1-669.5 Hosein Valayi Ahmad Jahan Latibari Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods
description	Strength properties and the yield of soda and soda-ethanol pulps produced using hornbeam, beech and poplar woods were investigated. Soda pulps were produced applying 20% active alkali and the soda-ethanol pulps were made using 10% active alkali and 50% ethanol. The pulping temperature was constant at 175 C and the soda pulping time was selected at 120 minutes and the soda-ethanol pulping times were 120 and 180 minutes. The highest accepted pulping yield at 58.54% was reached using soda pulping on poplar wood and the lowest yield (49.29%) was related to soda-ethanol pulp produced from beech wood applying 180 minutes pulping time. The accepted yield of soda-ethanol pulping was low, but the kappa numbers of these pulps were almost 20 units lower than soda pulps. The strength properties of soda-ethanol pulps were superior to soda pulps and the difference was statistically significant at 99% confidence level. The results of this study indicated that the delignification of soda-ethanol pulping process is faster than soda pulping from the selected hardwoods especially poplar wood.
format	article
author	Hosein Valayi Ahmad Jahan Latibari
author_facet	Hosein Valayi Ahmad Jahan Latibari
author_sort	Hosein Valayi
title	Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods
title_short	Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods
title_full	Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods
title_fullStr	Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods
title_full_unstemmed	Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods
title_sort	comparative investigation on the properties of soda and soda-ethanol pulps from three hardwoods
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2015
url	https://doaj.org/article/4713a23bd73544a39f6fb3c04fdabccd
work_keys_str_mv	AT hoseinvalayi comparativeinvestigationonthepropertiesofsodaandsodaethanolpulpsfromthreehardwoods AT ahmadjahanlatibari comparativeinvestigationonthepropertiesofsodaandsodaethanolpulpsfromthreehardwoods
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Comparative Investigation on the properties of Soda and Soda-Ethanol pulps from three hardwoods

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