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Use of enzymes to improve the refining of a bleached Eucalyptus globulus kraft pulp

Paper ID Volume ID Publish Year Pages File Format Full-Text
4163 212 2009 7 PDF Available
Title
Use of enzymes to improve the refining of a bleached Eucalyptus globulus kraft pulp
Abstract

The effect of cellulases and beta-glucanases was evaluated for energy savings in the papermaking refining process. Two commercial enzyme preparations, Celluclast 1.5 L® (cellulases mixture) and Viscozyme L® (carbohydrases mixture) were used to improve the refining process of a bleached Eucalyptus globulus kraft pulp, using different enzyme dosages and different reaction times. This treatment improved pulp drainability (expressed as Schopper–Riegler degree) by up to 80% at the same level of refining energy (1500 PFI revolutions). These results were more significant for cellulases treatment. Pulp degradation was evaluated by the pulp viscosity determination, which was in agreement with the fibre length determination that showed a slight reduction with the enzymatic treatment. The strength properties of the pulp were not affected by enzyme treatment; in fact an increase was observed in paper internal bonding.

Keywords
Pulp refining; Cellulases; Beta-glucanases; Eucalyptus globulus; Kraft pulp; Drainage properties; Physical properties
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 46, Issue 2, 1 October 2009, Pages 89–95
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
100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us