Volume No. : 3
Issue No. : 5
Year : 2011
ISSN Print : 0975-4393
ISSN Online : 2349-2988
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Bhawana Bisht Kweera1, Sanjay Naithani 2
1Assistant Professor, Graphic Era University, Dehradun,
2 Scientist, Forest Research Institute, Dehradun
*Corresponding Author
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DOI No:
ABSTRACT:
In this present paper a study has been carried out to develop an approach of minimum impact on environment during pulping and bleaching of Eucalyptus tereticornis. A new chemical additive (LpH) was used during pulping followed by single stage oxygen delignification and H-H-P sequence produced a pulp of higher pulp-yield, low kappa number, high brightness and better strength properties. In comparison to traditional modified cooking for lowering lignin content in pulp which are capital intensive additive pulping using a new chemical additive was preferred as a low cost alternatives. Among the addition of various doses of chemical additive the best results were obtained at 0.5% chemical additive dose .So the optimized condition for additive dose addition was 0.5%. In adopting bleaching sequence, OHHP sequence gave better strength properties, brightness in comparison to CEH sequence.
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KEYWORDS:
Extended delignification, Chemical additive (LpH), Kappa number, Chelating agent
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Cite:
Bhawana Bisht Kweera, Sanjay Naithani . Environmental Friendly Bleaching of Eucalyptus tereticornis. Research J. Science and Tech. 2011; 3(5): 292-294.
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