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Rice straw pulp obtained by using various methods
- Source :
- Bioresource Technology. 99:2881-2886
- Publication Year :
- 2008
- Publisher :
- Elsevier BV, 2008.
-
Abstract
- Rice straw was used as an alternative raw material to obtain cellulosics pulps. Pulping was done by using classics reagents as soda (with anthraquinone and parabenzoquinone as aditives), potassium hydroxide and Kraft process. The holocellulose, alpha-cellulose and lignin contents of rice straw (viz. 60.7, 41.2 and 21.9 wt%, respectively) are similar to those of some woody raw materials such as pine and eucalyptus, and various non-wood materials including olive tree prunings, wheat straw and sunflower stalks. Pulping tests were conducted by using soda, soda and anthraquinone at 1 wt%, soda and parabenzoquinone at 1 wt%, potassium hydroxide and sodium sulphate (Kraft process) under two different sets of operating conditions, namely: (a) a 10 wt% reagent concentration, 170 degrees C and 60 min; and (b) 15 wt% reagent, 180 degrees C and 90 min. The solid/liquid ratio was 6 in both cases. Paper sheets made from pulp extracted by cooking with soda (15 wt%) and AQ (1 wt%) at 180 degrees C and 90 min pulp exhibit the best drainage index, breaking length, stretch and burst index (viz. 23 degrees SR, 3494 m, 3.34% and 2.51 kN/g, respectively).
- Subjects :
- Paper
Environmental Engineering
Potassium Compounds
Bioengineering
engineering.material
Anthraquinone
chemistry.chemical_compound
Botany
Electrochemistry
Hydroxides
Sodium Hydroxide
Waste Management and Disposal
Potassium hydroxide
Plant Stems
Plant Extracts
Renewable Energy, Sustainability and the Environment
Chemistry
Pulp (paper)
Oryza
General Medicine
Straw
Wood
Kraft process
Sodium hydroxide
Soda pulping
engineering
Thermodynamics
Kraft paper
Nuclear chemistry
Subjects
Details
- ISSN :
- 09608524
- Volume :
- 99
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....cdc01940f8d85e2a8b90cd5df30508e0