Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping

Bagasse pulping process was conducted using soda liquor in five maximum cooking temperatures, 80, 100, 120, 140 and 160 degree centigrade. To evaluate rate equations of delignification reaction in each temperature, pulping was done in the same alkali and liquor to bagasse ratio but varying cooking...

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Main Authors:	MOHAMMAD MAHDI BARAZANDEH, Abbas Fakhryan roghani
Format:	article
Language:	FA
Published:	Regional Information Center for Science and Technology (RICeST) 2010
Subjects:	Bagasse delignification reaction rate Forestry SD1-669.5
Online Access:	https://doaj.org/article/d2d52ec5a2604caeb588f0b01d79b37a
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spelling	oai:doaj.org-article:d2d52ec5a2604caeb588f0b01d79b37a2021-12-02T09:11:03ZEvaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping1735-09132383-112X10.22092/ijwpr.2011.117111https://doaj.org/article/d2d52ec5a2604caeb588f0b01d79b37a2010-03-01T00:00:00Zhttp://ijwpr.areeo.ac.ir/article_117111_51d37b5a9bc0af4217b6e5e880832bfa.pdfhttps://doaj.org/toc/1735-0913https://doaj.org/toc/2383-112XBagasse pulping process was conducted using soda liquor in five maximum cooking temperatures, 80, 100, 120, 140 and 160 degree centigrade. To evaluate rate equations of delignification reaction in each temperature, pulping was done in the same alkali and liquor to bagasse ratio but varying cooking times and the results were presented in the form of rate equations with respect to residual lignin concentration in the pulp. The rate equations revealed that delignification reaction rate of bagasse depends both on cooking temperature and residual lignin concentration. The order of rate equation in higher temperatures is far higher than those in low temperatures and due to this, reaction rate in high temperatures is more dependent on residual lignin concentration and far than the rate reaction in lower temperatures. With reaction progressing, the difference between the two rate reactions is reduced and after one point it will be reversed. Using experimental data, the order of delignification reaction rate in temperatures 80, 100, 120, 140 and 160ْC were obtained as 4.6, 4.6, 5.5, 22.8 and 22.7 respectively. The rate constants were also calculated as 1.3×10-5 conc.-3.6 min.-1, 1.1×10-4 conc.-3.6 min.-1, 7.2×10-5 conc.-4.5 min.-1, 6.2×10-10 conc.-21.8 min.-1, 4.0×10-11 conc.-21.7 min.-1, respectively.MOHAMMAD MAHDI BARAZANDEHAbbas Fakhryan roghaniRegional Information Center for Science and Technology (RICeST)articleBagassedelignificationreaction rateForestrySD1-669.5FAتحقیقات علوم چوب و کاغذ ایران, Vol 26, Iss 1, Pp 72-82 (2010)
institution	DOAJ
collection	DOAJ
language	FA
topic	Bagasse delignification reaction rate Forestry SD1-669.5
spellingShingle	Bagasse delignification reaction rate Forestry SD1-669.5 MOHAMMAD MAHDI BARAZANDEH Abbas Fakhryan roghani Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping
description	Bagasse pulping process was conducted using soda liquor in five maximum cooking temperatures, 80, 100, 120, 140 and 160 degree centigrade. To evaluate rate equations of delignification reaction in each temperature, pulping was done in the same alkali and liquor to bagasse ratio but varying cooking times and the results were presented in the form of rate equations with respect to residual lignin concentration in the pulp. The rate equations revealed that delignification reaction rate of bagasse depends both on cooking temperature and residual lignin concentration. The order of rate equation in higher temperatures is far higher than those in low temperatures and due to this, reaction rate in high temperatures is more dependent on residual lignin concentration and far than the rate reaction in lower temperatures. With reaction progressing, the difference between the two rate reactions is reduced and after one point it will be reversed. Using experimental data, the order of delignification reaction rate in temperatures 80, 100, 120, 140 and 160ْC were obtained as 4.6, 4.6, 5.5, 22.8 and 22.7 respectively. The rate constants were also calculated as 1.3×10-5 conc.-3.6 min.-1, 1.1×10-4 conc.-3.6 min.-1, 7.2×10-5 conc.-4.5 min.-1, 6.2×10-10 conc.-21.8 min.-1, 4.0×10-11 conc.-21.7 min.-1, respectively.
format	article
author	MOHAMMAD MAHDI BARAZANDEH Abbas Fakhryan roghani
author_facet	MOHAMMAD MAHDI BARAZANDEH Abbas Fakhryan roghani
author_sort	MOHAMMAD MAHDI BARAZANDEH
title	Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping
title_short	Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping
title_full	Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping
title_fullStr	Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping
title_full_unstemmed	Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping
title_sort	evaluating rate equations of delignification reaction of bagasse in soda pulping
publisher	Regional Information Center for Science and Technology (RICeST)
publishDate	2010
url	https://doaj.org/article/d2d52ec5a2604caeb588f0b01d79b37a
work_keys_str_mv	AT mohammadmahdibarazandeh evaluatingrateequationsofdelignificationreactionofbagasseinsodapulping AT abbasfakhryanroghani evaluatingrateequationsofdelignificationreactionofbagasseinsodapulping
_version_	1718398213211291648

Evaluating Rate Equations of Delignification Reaction of Bagasse in Soda Pulping

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