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Low Temperature Soda-Oxygen Pulping of Bagasse

Wood shortages, environmental pollution and high energy consumption remain major obstacles hindering the development of today’s pulp and paper industry. Energy-saving and environmental friendly pulping processes are still needed, especially for non-woody materials. In this study, soda-oxygen pulping...

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Detalles Bibliográficos
Autores principales: Yue, Fengxia, Chen, Ke-Li, Lu, Fachuang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273722/
https://www.ncbi.nlm.nih.gov/pubmed/26771596
http://dx.doi.org/10.3390/molecules21010085
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author Yue, Fengxia
Chen, Ke-Li
Lu, Fachuang
author_facet Yue, Fengxia
Chen, Ke-Li
Lu, Fachuang
author_sort Yue, Fengxia
collection PubMed
description Wood shortages, environmental pollution and high energy consumption remain major obstacles hindering the development of today’s pulp and paper industry. Energy-saving and environmental friendly pulping processes are still needed, especially for non-woody materials. In this study, soda-oxygen pulping of bagasse was investigated and a successful soda-oxygen pulping process for bagasse at 100 °C was established. The pulping parameters of choice were under active alkali charge of 23%, maximum cooking temperature 100 °C, time hold at maximum temperature 180 min, initial pressure of oxygen 0.6 MPa, MgSO(4) charge 0.5%, and de-pithed bagasse consistency 12%. Properties of the resultant pulp were screened yield 60.9%, Kappa number 14, viscosity 766 dm(3)/kg, and brightness 63.7% ISO. Similar pulps were also obtained at 110 °C or 105 °C with a cooking time of 90 min. Compared with pulps obtained at higher temperatures (115–125 °C), this pulp had higher screened yield, brightness, and acceptable viscosity, while the delignification degree was moderate. These results indicated that soda-oxygen pulping at 100 °C, the lowest cooking temperature reported so far for soda-oxygen pulping, is a suitable process for making chemical pulp from bagasse. Pulping at lower temperature and using oxygen make it an environmental friendly and energy-saving pulping process.
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spelling pubmed-62737222018-12-28 Low Temperature Soda-Oxygen Pulping of Bagasse Yue, Fengxia Chen, Ke-Li Lu, Fachuang Molecules Article Wood shortages, environmental pollution and high energy consumption remain major obstacles hindering the development of today’s pulp and paper industry. Energy-saving and environmental friendly pulping processes are still needed, especially for non-woody materials. In this study, soda-oxygen pulping of bagasse was investigated and a successful soda-oxygen pulping process for bagasse at 100 °C was established. The pulping parameters of choice were under active alkali charge of 23%, maximum cooking temperature 100 °C, time hold at maximum temperature 180 min, initial pressure of oxygen 0.6 MPa, MgSO(4) charge 0.5%, and de-pithed bagasse consistency 12%. Properties of the resultant pulp were screened yield 60.9%, Kappa number 14, viscosity 766 dm(3)/kg, and brightness 63.7% ISO. Similar pulps were also obtained at 110 °C or 105 °C with a cooking time of 90 min. Compared with pulps obtained at higher temperatures (115–125 °C), this pulp had higher screened yield, brightness, and acceptable viscosity, while the delignification degree was moderate. These results indicated that soda-oxygen pulping at 100 °C, the lowest cooking temperature reported so far for soda-oxygen pulping, is a suitable process for making chemical pulp from bagasse. Pulping at lower temperature and using oxygen make it an environmental friendly and energy-saving pulping process. MDPI 2016-01-13 /pmc/articles/PMC6273722/ /pubmed/26771596 http://dx.doi.org/10.3390/molecules21010085 Text en © 2016 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yue, Fengxia
Chen, Ke-Li
Lu, Fachuang
Low Temperature Soda-Oxygen Pulping of Bagasse
title Low Temperature Soda-Oxygen Pulping of Bagasse
title_full Low Temperature Soda-Oxygen Pulping of Bagasse
title_fullStr Low Temperature Soda-Oxygen Pulping of Bagasse
title_full_unstemmed Low Temperature Soda-Oxygen Pulping of Bagasse
title_short Low Temperature Soda-Oxygen Pulping of Bagasse
title_sort low temperature soda-oxygen pulping of bagasse
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6273722/
https://www.ncbi.nlm.nih.gov/pubmed/26771596
http://dx.doi.org/10.3390/molecules21010085
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