Use of Ozone in Bleaching Pulps, 1991 Pulping Conference Proceedings

Ozone has been used either alone or with other bleaching agents in a multi-stage process, largely to replace the delignification done by the molecular chlorine. The effects of the main variables (consistency, pH, time, temperature, pretreatment of chemicals, chemical additives) on the properties of hardwood and softwood kraft and kraft-02 pulps are reviewed. Results on high-consistency ozone bleaching are given to show that the optimum pH for an ozone stage is between 2-3, the best ozone consumption on pulp is between 25 and 46% consistency; temperature up to 60°C has little effect on ozone stage efficiency; an extraction stage after the ozone stage improves the bleachability of the pulp. Pilot plants are also discussed.

Author: Liebergott, N., van Lierop, B., Skothos, A.
Use of Ozone in Bleaching Pulps, 1991 Pulping Conference Pro
Use of Ozone in Bleaching Pulps, 1991 Pulping Conference Proceedings
35.00

New Releases

TAPPI PRESS Catalog eBook 2026


Experience the Power of Publications in 2026


Open
 

Kraft Recovery Boilers, Third Edition  


Sponsored by the Recovery Boiler Program R&D Subcommittee of the American Forest & Paper Association (AF&PA) and published by TAPPI Press.


Purchase
 

Handbook For Pulp and Paper Technologists (The SMOOK Book), Fourth Edition

The best-selling text to introduce the entire technology of pulp and paper manufacture.

Purchase
 

Guidelines for Safe Assessment and Operation of Yankee Dryers  


A project of the Yankee Dryer Safety & Reliability Committee.

Purchase
 

Check our newest additions.


TAPPI Press offers some of the most in-depth resources and references for the forest products and related industries. 

See More
   
 

Available for Purchase – Conference Proceedings


TAPPI maintains a record of key conference papers, presentations, and other conference publications, available for purchase in a variety of formats.

See More