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Reduction of Chloride Dioxide in Paper Bleaching using Peroxide Activation

Authors: Ayo Afolabi, Rudzani Sigwadi, Ambali Abdulkareem

Abstract:

All around the world pulp and paper industries are the biggest plant production with the environmental pollution as the biggest challenge facing the pulp manufacturing operations. The concern among these industries is to produce a high volume of papers with the high quality standard and of low cost without affecting the environment. This result obtained from this bleaching study show that the activation of peroxide was an effective method of reducing the total applied charge of chlorine dioxide which is harmful to our environment and also show that softwood and hardwood Kraft pulps responded linearly to the peroxide treatments. During the bleaching process the production plant produce chlorines. Under the trial stages chloride dioxide has been reduced by 3 kg/ton to reduce the brightness from 65% ISO to 60% ISO of pulp and the dosing point returned to the E stage charges by pre-treating Kraft pulps with hydrogen peroxide. The pulp and paper industry has developed elemental chlorine free (ECF) and totally chlorine free (TCF) bleaching, in their quest for being environmental friendly, they have been looking at ways to turn their ECF process into a TCF process while still being competitive. This prompted the research to investigate the capability of the hydrogen peroxide as catalyst to reduce chloride dioxide.

Keywords: Hydrogen Peroxide, bleaching, chloride dioxide, elemental chlorine free (ECF), totally chlorine free (TCF)

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1333302

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References:


[1] Z. Mingxin, H. Hui, D. Xian, S.Lina, X. Yanhua, Kinetics and Mechanism Study on Chlorine Dioxide Generation with Hydrogen Peroxide, 2011 International Conference on Computer Distributed Control and Intelligent Environmental Monitoring.
[2] P. Dwivedir, V. Vivekanand, N. Pareek, A. Sharma, R. P. Singh, Bleach Enhancement of Mixed Wood Pulpby Xylanase-Laccase Concoction Derived Through Co-culture Strategy, Applied Biochemistry and Biotechnology 160 (2010) 255-268.
[3] K.R. Solomon, Chlorine in the bleaching of pulp and paper, Pure & Applied Chemistry 68 (1996) 1721-1 730.
[4] J. Kukkola, J. Knuutinen, J. Paasivirta, S. Herve, P. Pessala, E. Schultz, Characterization of high molecular mass material in ECF and TCF bleaching liquors by Py-GC/MS with and without TMAH methylation, Journal of Analytical Applied Pyrolysis 76 (2006) 214-221.
[5] J. Kukkola, J. Knuutinen, J. Paasivirta, S. Herve, P. Pessala, E. Schultz, Size-exclusion chromatographic study of ECF and TCF softwood kraft pulp bleaching liquors, Environmental Science and Pollution Research 18 (2011) 1049-1056.
[6] S. Abrantes, E.Amaral, A. P. Costa, A. A. Shatalov , A. P. Duarte, Hydrogen peroxide bleaching of Arundo donax L.kraft-anthraquinone pulp-Effect of a chelating stage, Industrial Crops and Products 25 (2007) 288-293.
[7] Suchy, D. S. Argyropoulos, Catalysis and activation of oxygen and peroxide delignification of chemical pulps: a review, Tappi Journal 1 (2002) 1-18.
[8] P. Axegard, E. Bergnor, M. Ek, and U. Ekholm, Bleaching of softwood kraft pulps with H2O2, O3, and ClO2, Tappi Journal 79 (1996) 113-119.
[9] T.J. Mcdonough, Recent advances in bleached chemical pulp manufacturing technology Part 1: Extended delignification, oxygen delignification, enzyme applications, and ECF and TCF bleaching, Tappi Journal 78 (1995) 55-62.