Determination of Kraft-NaBH4 pulping condition of Uludag fir (Abies Bornmuelleriana Mattf.)

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dc.contributor.authorAkgül, Mehmet
dc.contributor.authorTemiz, Seyfettin
dc.date.accessioned2021-06-23T18:54:13Z
dc.date.available2021-06-23T18:54:13Z
dc.date.issued2006
dc.departmentB.A.İ.B.Ü Düzce Orman Fakültesien_US
dc.description.abstractThe aim of this study is to evaluate the effects of NaBH4 on pulp and paper properties on conventional kraft pulping. The chemical composition of the Uludag fir wood was determined and this wood was utilized as raw material in pulping experiments. Two sets of pulping experiments were conducted in this study. In the first set, six conventional kraft cookings were made to determine the optimum conventional kraft cooking conditions by altering the cooking time and active alkali taking into account the kappa number and the pulping yield. The obtained results indicated that the optimum kraft cooking condition was accomplished when kraft cook was made using 18% active alkali for a cooking period of 90 min at 170°C. Cooking at these conditions gave 46.3% screened yield, 28.5 kappa number and 1102 cm3 g-1 viscosity for Uludag fir. A second set of cookings was made taking into account the optimum kraft cooking condition and 1, 2 and 3% NaBH4 was added to the cooking digester based on oven dry wood. The results showed a significant decrease in pulping rejects and increase in pulping yield when NaBH4 was added to the cooking digester. This finding indicated higher pulping selectivity of NaBH4 added kraft method. In addition, higher pulp viscosity and brightness were observed in the NaBH4 added kraft method. On the other hand, the strength properties obtained in Kraft-NaBH 4 was a slightly reduced compared to the conventional kraft method. © 2006 Asian Network for Scientific Information.en_US
dc.identifier.doi10.3923/pjbs.2006.2493.2497
dc.identifier.endpage2497en_US
dc.identifier.issn1028-8880
dc.identifier.issue13en_US
dc.identifier.scopus2-s2.0-33845251821en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage2493en_US
dc.identifier.urihttps://doi.org/10.3923/pjbs.2006.2493.2497
dc.identifier.urihttps://hdl.handle.net/20.500.12491/4310
dc.identifier.volume9en_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorAkgül, Mehmet
dc.language.isoenen_US
dc.relation.ispartofPakistan Journal of Biological Sciencesen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectDelignificationen_US
dc.subjectKappa numberen_US
dc.subjectKraft pulpingen_US
dc.subjectMechanical propertiesen_US
dc.subjectSodium borohidrateen_US
dc.subjectUluda? fireen_US
dc.subjectYielden_US
dc.titleDetermination of Kraft-NaBH4 pulping condition of Uludag fir (Abies Bornmuelleriana Mattf.)en_US
dc.typeArticleen_US

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