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Open Access
Valmet Tail Shooter and Tail Blower Improve Safety and Boost Productivity, 1990 TAPPI Conference Proceedings

Valmet Tail Shooter and Tail Blower Improve Safety and Boost Productivity, 1990 TAPPI Conference Proceedings

Webinars
Assessing Dryer Performance Using TAPPI TIPs - II

This webinar was hosted by the TAPPI Papermakers & Water Removal Committees on September 28, 2010. The seminar was available live to all members of the Papermakers and Water Removal Committees

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

Open Access
PCEI9117

Role of Quality Implementation in Mill Decision Systems, 1991 Process Control, Electrical & Info. 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

Open Access
Developments in Handling Sugar Cane Bagasse for Newsprint Production, 1993 Pulping Conference Proceedings

Developments in Handling Sugar Cane Bagasse for Newsprint Production, 1993 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

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
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.

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