Environmentally safe bleaching of bisulfite pulp

Environmentally safe bleaching of bisulfite pulp Bleaching of bisulfite pulp with high fraction of residual lignin was studied. Bleaching was performed using two oxidants: hydrogen peroxide in acid medium in the delignification stage and sodium chlorite in the final bleaching. Oxidative degradation of the pulp and chemical loss of the fiber are quite moderate in the process, and changes in the fiber size and mechanical properties of the pulp are insignificant. This technology ensures high degree of deresinification with respect to total and “harmful” resins, i.e., it eliminates “resin problems” in production of paper and cardboard. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Environmentally safe bleaching of bisulfite pulp

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Publisher
Pleiades Publishing
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427214090213
Publisher site
See Article on Publisher Site

Abstract

Bleaching of bisulfite pulp with high fraction of residual lignin was studied. Bleaching was performed using two oxidants: hydrogen peroxide in acid medium in the delignification stage and sodium chlorite in the final bleaching. Oxidative degradation of the pulp and chemical loss of the fiber are quite moderate in the process, and changes in the fiber size and mechanical properties of the pulp are insignificant. This technology ensures high degree of deresinification with respect to total and “harmful” resins, i.e., it eliminates “resin problems” in production of paper and cardboard.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Dec 30, 2014

References

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