Charge aspects of hydrogen peroxide bleached de-inked pulps

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Abstract

The aim of this study was to evaluate the effect of hydrogen peroxide bleaching on fibre charge of a commercial de-inked recycled pulp. The pulp was bleached with hydrogen peroxide for brightness improvement. The results indicated that the brightness gain was a function of H2O2 dosage. The yield loss associated with the peroxide bleaching was significant due to the presence of alkali-soluble components in the de-inked recycled pulp. The loss of the total fibre charge was apparently linearly related to the yield loss, but the change of the fibre surface charge was insignificant. © 2005 Elsevier B.V. All rights reserved.

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Bhardwaj, N. K., & Nguyen, K. L. (2005). Charge aspects of hydrogen peroxide bleached de-inked pulps. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 262(1–3), 232–237. https://doi.org/10.1016/j.colsurfa.2005.05.008

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