Study on Magnesium Hydroxide-Based Hydrogen Peroxide Bleaching Process of Nigra poplar CTMP

Qiang Zhao; De Zhi Sun; Ming Yang Zhang; Su Min Kang

doi:10.4028/www.scientific.net/AMR.233-235.1328

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 233-235Study on Magnesium Hydroxide-Based Hydrogen...

Study on Magnesium Hydroxide-Based Hydrogen Peroxide Bleaching Process of Nigra poplar CTMP

Abstract:

The Mg(OH)₂-based peroxide bleaching process of Nigra poplar CTMP pulp was confirmed. The optimal bleaching condition were as follows: 4% H₂O₂,1% Mg(OH)₂, 15% pulp consistency, the reaction temperature was 80°C and the suitable reaction time was 2 hours. The Mg(OH)₂-based bleaching process shows significant benefits over sodium hydroxide process. In contrast, magnesium hydroxide bleaching generates higher pulp yield and lower effluent COD at the same chemical dosage. The study shows peroxide bleaching of CTMP pulp with magnesium hydroxide as alkali source is to be an option for the high-yield pulp bleaching.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

1328-1331

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.1328

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Online since:

May 2011

Authors:

Qiang Zhao, De Zhi Sun, Ming Yang Zhang, Su Min Kang

Keywords:

Bleaching, Magnesium Hydroxide, Nigra poplar CTMP, Peroxide Bleaching

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References

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