Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp

The purpose of this study was to compare the effects of various concentrations of sodium hydroxide and treatment times on the properties of bagasse and Eastern cottonwood (Populus deltoids) cold soda pulp and paper. The cold soda pulp was prepared using various concentrations of sodium hydroxide (5,...

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Autores principales:	Sabah Ashrafi birghani, Ahmadreza Sraeyan
Formato:	article
Lenguaje:	FA
Publicado:	Regional Information Center for Science and Technology (RICeST) 2012
Materias:	Cold soda pulp Bagasse eastern cottonwood populus deltoids yield alkali absorption Strength properties Forestry SD1-669.5
Acceso en línea:	https://doaj.org/article/2eeb0cbffb9342b3b796a9f9c15f303d
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id	oai:doaj.org-article:2eeb0cbffb9342b3b796a9f9c15f303d
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spelling	oai:doaj.org-article:2eeb0cbffb9342b3b796a9f9c15f303d2021-12-02T07:43:05ZComparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp1735-09132383-112X10.22092/ijwpr.2012.117076https://doaj.org/article/2eeb0cbffb9342b3b796a9f9c15f303d2012-03-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117076_d5c6387b64cd69cc479d90911c15c683.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XThe purpose of this study was to compare the effects of various concentrations of sodium hydroxide and treatment times on the properties of bagasse and Eastern cottonwood (Populus deltoids) cold soda pulp and paper. The cold soda pulp was prepared using various concentrations of sodium hydroxide (5, 10, 15% based on oven dry weight), different treatment times (20, 40, 60 min.), and constant liquor to wood ratio of 10:1 at 25 ºC and atmospheric pressure. The pulp prepared after 40 min treatment time was selected and refined to the freeness of 400 ml CSF. Analysis of the properties of hand sheets was conducted based on completely randomized design. Duncan multiple range grouping test was used to classify the properties of papers. The results indicated that, the yield of pulp obtained from Eastern cottonwoodand bagasse pulp varied between 86.54% to 94.52% and 70.65 to 87.32% respectively. The absorbed alkali was varied from 2.15% to 4.78 % for Eastern cottonwood and 3.06% to 6.80% for bagasse. Eastern cottonwood had the highest yield, thickness and strength properties whereas the highest absorbed alkali and paper density were observed in bagasse. It was observed that as the concentration of sodium hydroxide was increased from 5% to 15%, the yield of pulp and the thickness of paper decreased, while the absorbed alkali, density and the strength properties of paper increased. In general, the cold soda pulp from Eastern cottonwood provided higher quality compared with bagasse under the same pulping conditions.Sabah Ashrafi birghaniAhmadreza SraeyanRegional Information Center for Science and Technology (RICeST)articleCold soda pulpBagasseeastern cottonwoodpopulus deltoidsyieldalkali absorptionStrength propertiesForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 27, Iss 1, Pp 16-26 (2012)
institution	DOAJ
collection	DOAJ
language	FA
topic	Cold soda pulp Bagasse eastern cottonwood populus deltoids yield alkali absorption Strength properties Forestry SD1-669.5
spellingShingle	Cold soda pulp Bagasse eastern cottonwood populus deltoids yield alkali absorption Strength properties Forestry SD1-669.5 Sabah Ashrafi birghani Ahmadreza Sraeyan Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp
description	The purpose of this study was to compare the effects of various concentrations of sodium hydroxide and treatment times on the properties of bagasse and Eastern cottonwood (Populus deltoids) cold soda pulp and paper. The cold soda pulp was prepared using various concentrations of sodium hydroxide (5, 10, 15% based on oven dry weight), different treatment times (20, 40, 60 min.), and constant liquor to wood ratio of 10:1 at 25 ºC and atmospheric pressure. The pulp prepared after 40 min treatment time was selected and refined to the freeness of 400 ml CSF. Analysis of the properties of hand sheets was conducted based on completely randomized design. Duncan multiple range grouping test was used to classify the properties of papers. The results indicated that, the yield of pulp obtained from Eastern cottonwoodand bagasse pulp varied between 86.54% to 94.52% and 70.65 to 87.32% respectively. The absorbed alkali was varied from 2.15% to 4.78 % for Eastern cottonwood and 3.06% to 6.80% for bagasse. Eastern cottonwood had the highest yield, thickness and strength properties whereas the highest absorbed alkali and paper density were observed in bagasse. It was observed that as the concentration of sodium hydroxide was increased from 5% to 15%, the yield of pulp and the thickness of paper decreased, while the absorbed alkali, density and the strength properties of paper increased. In general, the cold soda pulp from Eastern cottonwood provided higher quality compared with bagasse under the same pulping conditions.
format	article
author	Sabah Ashrafi birghani Ahmadreza Sraeyan
author_facet	Sabah Ashrafi birghani Ahmadreza Sraeyan
author_sort	Sabah Ashrafi birghani
title	Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp
title_short	Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp
title_full	Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp
title_fullStr	Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp
title_full_unstemmed	Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp
title_sort	comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2012
url	https://doaj.org/article/2eeb0cbffb9342b3b796a9f9c15f303d
work_keys_str_mv	AT sabahashrafibirghani comparingtheeffectofalkalichargeandtreatmenttimeonthepropertiesofbagasseandeasterncottonwoodcoldsodapulp AT ahmadrezasraeyan comparingtheeffectofalkalichargeandtreatmenttimeonthepropertiesofbagasseandeasterncottonwoodcoldsodapulp
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Comparing the effect of alkali charge and treatment time on the properties of bagasse and eastern cottonwood cold soda pulp

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