Influence of Sodium Borohydride on Kraft Pulping of European Black Pine as a Digester Additive

In this study, the effects of sodium borohydride (NaBH4) on properties of kraft pulp and paper obtained from European black pine (Pinus nigra Arn.) were investigated. Kraft−NaBH4 cookings were done under fixed cooking conditions by adding NaBH4 in the amounts of 0.5%, 1%, 1.5%, and 2% (oven-dried wo...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2011-02, Vol.50 (4), p.2441-2444
Main Authors: Gulsoy, Sezgin Koray, Eroglu, Hudaverdi
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
General Research
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Summary:In this study, the effects of sodium borohydride (NaBH4) on properties of kraft pulp and paper obtained from European black pine (Pinus nigra Arn.) were investigated. Kraft−NaBH4 cookings were done under fixed cooking conditions by adding NaBH4 in the amounts of 0.5%, 1%, 1.5%, and 2% (oven-dried wood) to the cooking liquor. NaBH4-free kraft cooking was carried out as control. The results indicated that addition of NaBH4 to cooking liquor increased the pulp yield. However, the kappa number of pulp and beating time decreased. The brightness of kraft−NaBH4 papers was found to be higher than that of control papers. Addition of NaBH4 significantly decreased pulp viscosity and slightly decreased strength properties of papers.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie101999p