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Initial phase of sodium bisulphite pulping of spruce. Part I

A sodium bisulphite cooking study has been performed on spruce chips with the aim of monitoring the impregnation and the initial phase of such a cook performed at pH 4.5. Both pulp and liquor analyses have been carried out and the experiments have been done with a laboratory-prepared cooking acid, i...

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Published in:	Cellulose chemistry and technology 2016-02, Vol.50 (2), p.293
Main Authors:	Deshpande, Raghe, Sundvall, Lars, Grundberg, H., Germgård, U.
Format:	Article
Language:	English
Subjects:	Bisulphite cooking Cellulose Enzyme kinetics Glucomannan Glucomannans Heating Kinetic modeling Kinetics Lignin Lignins Pulp composition Pulp cooking Side reactions Sodium Sodium bisulphite Spruce Thiosulphate and xylan Thiosulphates Total pulp yield
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creator	Deshpande, Raghe Sundvall, Lars Grundberg, H. Germgård, U.
description	A sodium bisulphite cooking study has been performed on spruce chips with the aim of monitoring the impregnation and the initial phase of such a cook performed at pH 4.5. Both pulp and liquor analyses have been carried out and the experiments have been done with a laboratory-prepared cooking acid, in comparison with a mill cooking acid. The pulping experiments have been performed down to a total pulp yield of 60%. The objective was to verify and extend the current knowledge of bisulphite pulping with a focus on the initial phase of the cook. With the help of a kinetic model that has been developed in the project, the pulp composition during the cook with respect to cellulose, lignin, glucomannan and xylan can now be predicted. The side reactions with respect to thiosulphate formation were also analyzed in this study.
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Part I</title><source>Alma/SFX Local Collection</source><source>Science Journals (Open access)</source><creator>Deshpande, Raghe ; Sundvall, Lars ; Grundberg, H. ; Germgård, U.</creator><creatorcontrib>Deshpande, Raghe ; Sundvall, Lars ; Grundberg, H. ; Germgård, U.</creatorcontrib><description>A sodium bisulphite cooking study has been performed on spruce chips with the aim of monitoring the impregnation and the initial phase of such a cook performed at pH 4.5. Both pulp and liquor analyses have been carried out and the experiments have been done with a laboratory-prepared cooking acid, in comparison with a mill cooking acid. The pulping experiments have been performed down to a total pulp yield of 60%. The objective was to verify and extend the current knowledge of bisulphite pulping with a focus on the initial phase of the cook. 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identifier	ISSN: 0576-9787
ispartof	Cellulose chemistry and technology, 2016-02, Vol.50 (2), p.293
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source	Alma/SFX Local Collection; Science Journals (Open access)
subjects	Bisulphite cooking Cellulose Enzyme kinetics Glucomannan Glucomannans Heating Kinetic modeling Kinetics Lignin Lignins Pulp composition Pulp cooking Side reactions Sodium Sodium bisulphite Spruce Thiosulphate and xylan Thiosulphates Total pulp yield
title	Initial phase of sodium bisulphite pulping of spruce. Part I
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