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Uncovering the Best Way to Turn Dull Wood Pulp into Bright Paper

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Lynn M. Savage

When making paper, manufacturers typically use hydrogen peroxide to bleach the processed wood pulp, thus brightening the final product. To avoid delignifying the pulp — reducing the pulp yield and destroying the fibers that provide strength — the industry uses thermomechanical pulp, which is steamed during processing, and a bleach slurry that has a pH of ∼11. Researchers used multiple spectroscopic techniques to characterize alkaline and acidic versions of bleaching wood pulp with hydrogen peroxide. Courtesy of Marek Sikorski, Adam Mickiewicz University, and Adam Wójciak,...Read full article

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    Published: December 2007
    Basic ScienceFeaturesfibershydrogen peroxideSensors & Detectorsspectroscopythermomechanical pulp

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