Z􀀀ECF and Z􀀀TCF Bleaching of Softwood Kraft Pulp

Abstract
The use of chlorine-based reagents during pulp bleaching leads to several concerns related to
the production of toxic compounds in both the paper itself and in the process water. Fortunately,
it is possible to reduce their use with oxygen-based chemicals. Today kraft cooking is typically
followed by OO-D-Eop-D in case of ECF bleaching or OO-Z/D-Eop-D in case of Z-ECF
bleaching. A final hydrogen peroxide stage can complete these standard bleaching sequences
for higher brightness ceiling and stability.
It is well agreed Z-ECF bleaching allows for similar or better pulp characteristics than ECF
bleaching with hardwood pulp. However, that point is still a matter of concern with softwood
pulp for some experts. The present paper reviews different lab and industrial results showing
competitiveness of environmentally friendly Z-ECF bleaching considering pulp quality,
chemistry, and economic aspects. 

TAPPI conference proceedings and presentations, technical papers, and publication articles provide technical and management data and solutions on topics covering the Pulp, Paper, Tissue, Corrugated Packaging, Flexible Packaging, Nanotechnology and Converting Industries.

Simply select the quantity, add to your cart and your conference paper, presentation or article will be available for immediate download.
Author: Alexis Métais
Z-ECF and Z-TCF Bleaching of Softwood Kraft Pulp, 2022PEERS/
35.00

New Releases

TAPPI PRESS Catalog eBook 2024


Experience the Power of Publications in the 2024 TAPPI Press Catalog


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