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Pulping of rice straw with high-boiling point organosolv solvents

Paper ID Volume ID Publish Year Pages File Format Full-Text
4332 221 2008 5 PDF Available
Title
Pulping of rice straw with high-boiling point organosolv solvents
Abstract

Rice straw was used as an alternative raw material to obtain paper pulp. Pulping was done by using high-boiling point organic solvents of decreased polluting power relative to classical (Kraft, sulphite) solvents but affording operation at similar pressure levels.The holocellulose, α-cellulose and lignin contents of rice straw (viz. 60.7, 41.2 and 21.9%, 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 ethyleneglycol, diethyleneglycol, ethanolamine and diethanolamine under next operating conditions: 80% solvent, 180 °C and 150 min. The solid/liquid ratio was 6. The amine solvents were found to provide pulp with better properties than did the glycol solvents. Diethanolamine pulp exhibited the best viscosity, Kappa index, drainage index and burst index (viz. 956 mL/g, 17.0, 21°SR and 1.23 kN/g, respectively). Paper made from ethanolamine pulp exhibited the best stretch (1.99%), tear index (0.44 mNm2/g) and brightness (41.7%).

Keywords
Non-wood; Organosolv; Paper; Pulp; Rice straw
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 42, Issue 3, 1 December 2008, Pages 243–247
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us