Characterization of a commercial oxygen-bleaching stage in a mill recycling mixed office wastepaper

James P. Jennings, Chris D. Thomas, Vincent L. Magnotta, Brian P. Roy, Konstantin Hristofas, John F. Cirucci, Peter Duxbury

Research output: Contribution to specialist publicationArticle

3 Scopus citations

Abstract

A European mill is using an oxygen-bleaching stage (OXYPRO™ OR) to brighten, color strip, and clean a MOW (mixed office waste) furnish containing up to 15% groundwood. The OR stage is part of a totally chlorine-free two-stage oxidative-reductive bleaching process. Quality of the recycled pulp is competitive with virgin market pulp.This report reviews the layout and performance of the commercial system and describes pulp properties. Pulp strength improves through the OR stage, while unbleached fiber and dirt content are reduced. The OR stage had only a small effect on BOD5 and COD content of the bleach-stage filtrate.

Original languageEnglish (US)
Pages119-125
Number of pages7
Volume79
No7
Specialist publicationTappi Journal
StatePublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Media Technology
  • Materials Science(all)
  • Mechanical Engineering

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