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Journal articles
Magazine articles
Open Access
Understanding the risks and rewards of using 50% vs. 10% strength peroxide in pulp bleach plants, TAPPI Journal November 2018

Authors: Alan W. Rudie and Peter W. Hart | ABSTRACT: The use of 50% concentration and 10% concentration hydrogen peroxide were evaluated for chemical and mechanical pulp bleach plants at storage and at point of use. Several dangerous occurrences have been documented when the supply of 50% peroxide going into the pulping process was not stopped during a process failure. Startup conditions and leaking block valves during maintenance outages have also contributed to explosions. Although hazardous events have occurred, 50% peroxide can be stored safely with proper precautions and engineering controls. For point of use in a chemical bleach plant, it is recommended to dilute the peroxide to 10% prior to application, because risk does not outweigh the benefit. For point of use in a mechanical bleach plant, it is recommended to use 50% peroxide going into a bleach liquor mixing system that includes the other chemicals used to maintain the brightening reaction rate. When 50% peroxide is used, it is critical that proper engineering controls are used to mitigate any risks.

Journal articles
Magazine articles
Open Access
Using multistage models to evaluate how pulp washing after the first extraction stage impacts elemental chlorine-free bleach demand, TAPPI Journal November 2018

Using multistage models to evaluate how pulp washing after the first extraction stage impacts elemental chlorine-free bleach demand, TAPPI Journal November 2018

Journal articles
Magazine articles
Open Access
Laboratory method for determining the source of brightness loss at a southern United States bleached paperboard mill, TAPPI Journal October 2018

Laboratory method for determining the source of brightness loss at a southern United States bleached paperboard mill, TAPPI Journal October 2018

Journal articles
Open Access
Factors contributing to improved environmental performance in the Finnish kraft pulping industry, TAPPI JOURNAL, September 2007

Factors contributing to improved environmental performance in the Finnish kraft pulping industry, TAPPI JOURNAL, September 2007

Journal articles
Open Access
Performance of a final hydrogen peroxide stage in the ECF bleaching of Eucalypt DOEOPD1 Kraft Pulps

Performance of a final hydrogen peroxide stage in the ECF bleaching of Eucalypt D0EOPD1 kraft pulps, TAPPI JOURNAL, August 2008

Journal articles
Open Access
Decreasing Calcium Oxalate Scaling by Partial Substitution of Mg(OH)2 for NaOH in the Peroxide Bleaching of Mechanical Pulps, TAPPI JOURNAL, February 2006, Vol. 5(2) (209 KB)

Decreasing Calcium Oxalate Scaling by Partial Substitution of Mg(OH)2 for NaOH in the Peroxide Bleaching of Mechanical Pulps, TAPPI JOURNAL, February 2006, Vol. 5(2) (209 KB)

Journal articles
Open Access
Characterization of Chemical Pulp Fines, TAPPI JOURNAL, February 2006, Vol. 5(2) (6.30 KB)

Characterization of Chemical Pulp Fines, TAPPI JOURNAL, February 2006, Vol. 5(2) (6.30 KB)

Journal articles
Open Access
Materials issues in black liquor steam reforming/gasification, TAPPI JOURNAL, February 2006, Vol. 5(2) (6.3 MB)

Materials issues in black liquor steam reforming/gasification, TAPPI JOURNAL, February 2006, Vol. 5(2) (6.3 MB)

Journal articles
Open Access
Consequences of lignin precipitation in the pulp and paper industry, TAPPI JOURNAL, January 2006, Vol. 5(1) (236 KB)

Consequences of lignin precipitation in the pulp and paper industry, TAPPI JOURNAL, January 2006, Vol. 5(1) (236 KB)

Journal articles
Open Access
The effects of changing ONP quality on a newsprint mill, TAPPI JOURNAL, January 2006, Vol. 5(1) (328 KB)

The effects of changing ONP quality on a newsprint mill, TAPPI JOURNAL, January 2006, Vol. 5(1) (328 KB)

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