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Low Temperature Soda-Oxygen Pulping of Bagasse
- Source :
- Molecules, Vol 21, Iss 1, p 85 (2016), Molecules, Molecules; Volume 21; Issue 1; Pages: 85
- Publication Year :
- 2016
- Publisher :
- MDPI AG, 2016.
-
Abstract
- 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, MgSO4 charge 0.5%, and de-pithed bagasse consistency 12%. Properties of the resultant pulp were screened yield 60.9%, Kappa number 14, viscosity 766 dm3/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.
- Subjects :
- 0106 biological sciences
Hot Temperature
Pharmaceutical Science
Environmental pollution
Alkalies
01 natural sciences
Oxygen
Analytical Chemistry
chemistry.chemical_compound
Drug Discovery
Manufacturing Industry
Lignin
energy-saving
Viscosity
Pulp (paper)
04 agricultural and veterinary sciences
Pulp and paper industry
Environmentally friendly
Chemistry (miscellaneous)
Soda pulping
environmentally friendly
Molecular Medicine
Paper
Materials science
brightness
chemistry.chemical_element
engineering.material
low temperature
Kappa number
Article
lcsh:QD241-441
bagasse
soda-oxygen pulping
stomatognathic system
lcsh:Organic chemistry
010608 biotechnology
Pressure
Humans
Physical and Theoretical Chemistry
Cellulose
040101 forestry
business.industry
Organic Chemistry
Green Chemistry Technology
Biotechnology
stomatognathic diseases
chemistry
engineering
0401 agriculture, forestry, and fisheries
Bagasse
business
Subjects
Details
- Language :
- English
- ISSN :
- 14203049
- Volume :
- 21
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Molecules
- Accession number :
- edsair.doi.dedup.....7c097cbcec0c1fd90b3238ba36d59040