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Journal articles
Open Access
CTMP in Fine Papers: On-Machine Surface Treatments for Impro

CTMP in Fine Papers: On-Machine Surface Treatments for Improved Brightness Stability, 1991 Papermakers Conference Proceedings

Magazine articles
Open Access
Deinking Difficulties Related to Ink Formulation, Printing P

Deinking Difficulties Related to Ink Formulation, Printing Process and Type of Paper

Journal articles
Open Access
Progressive Deformation at the Crack Tip in Paper During Mod

Progressive Deformation at the Crack Tip in Paper During Mode 1 Fracture (Part 1 Bond Paper), 1991 International Paper Physics Conference Proceedings

Journal articles
Open Access
Lignin Recovery from Kraft Black Liquor: Preliminary Process

Lignin Recovery from Kraft Black Liquor: Preliminary Process Design, 1990 Pulping Conference Proceedings

Journal articles
Open Access
Pulping and Papermaking Properties of Managed Second-Growth

Pulping and Papermaking Properties of Managed Second-Growth Softwoods, 1995 Pulping Conference Proceedings

Journal articles
Open Access
Tailoring Fiber Properties to Paper Manufacture: Recent Deve

Tailoring Fiber Properties to Paper Manufacture: Recent Developments, 1995 Pulping Conference Proceedings

Journal articles
Open Access
Editor's Notes: Ready for a Test Drive, TAPPI JOURNAL, Novem

Editor's Notes: Ready for a Test Drive, TAPPI JOURNAL, November, 2006

Journal articles
Open Access
Presentation of a dry black liquor gasification process with direct causticization, TAPPI Journal March 2006

Presentation of a dry black liquor gasification process with direct causticization, TAPPI Journal March 2006

Journal articles
Open Access
Reducing aox by increasing oxidation potential in the first caustic extraction stage, TAPPI Journal December 2024

Authors: Peter W. Hart and Jeffrey S. Hsieh | Tappi J. 74(11): 117(1991) - ABSTRACT: An increase in the standard oxidation potential of the reinforcing agent in the first caustic extraction stage will reduce the amount of AOX in the stage's effluent. A chlorinated broumstock pulp was treated alternatively in a basic caustic extraction (E) stage, an oxygen-reinforced caustic extraction (EO) stage, and an extraction stage reinforced with oxygen and peroxide (EOP). An AOX reduction of up to 30% was obtained in the effluent from the peroxide-reinforced extraction stage. In addition to the brownstock work, using two different model lignin compounds, we ran tests using oxyen, potassium permanganate, hydrogen peroxide with oxygen, and ozone with oxygen-reinforced caustic stages. In all cases, increasing the oxidation potential of the reinforcing agent decreased the amount of AOX detected in the effluent.

Journal articles
Open Access
Production of high yield bleached hardwood kraft pulp: Breaking the kraft pulp yield barrier,TAPPI Journal December 2024

Author: Peter W. Hart | TAPPI J. 10(9): 37(2011) - ABSTRACT: A modified kraft pulping process has been developed that successfully breaks the traditional hard-wood kraft pulp yield barrier. The process produces fully bleached, high brightness hardwood kraft pulp with a yield of greater than 53% on wood. Details of the development and processing steps, along with various recovery cycle impacts, are discussed.

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