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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13245
Title: Effect of xylanases from Aspergillus niger NKUC3-0.2 mutant strain on prebleaching of hardwood mixed pulps and its impact on CEPHH bleaching sequence
Authors: Dutt D.
Tyagi C.H.
Jindal A.K.
Mittal A.
Published in: IPPTA: Quarterly Journal of Indian Pulp and Paper Technical Association
Abstract: Effects of Aspergillus niger NKUC3-0.2 pretreatment on total chlorine demand of pulp during conventional bleaching sequence and its impact on pulp brightness, viscosity and mechanical strength of mixed hardwood pulps were studied. Mixed hardwood pulps of Populus deltoides and Eucalyptus tereticornis in the ratio of 90:10 was cooked by kraft pulping process and then pre-bleached with A. niger NKUC3-0.2 to improve pulp brightness and pulp strength. A. niger NKUC3-0.2 reduces kappa number from 19.6 to 5.0. The enzyme treated pulp shows an improvement in brightness and viscosity by 1.8 and 1.6 per cent ( 0PV) respectively at enzyme dose of 20 and 40 IU/g of pulp over untreated pulp and after enzyme pretreatment, the total chlorine demand reduces by 1.3 and 1.7 per cent respectively. The average pulp brightness and viscosity of enzyme treated pulp at two different enzyme doses i.e. 20 and 40 IU/g are 86.8 and 87.0 per cent (0PV) and 8.07 and 8.06 cps respectively.
Citation: IPPTA: Quarterly Journal of Indian Pulp and Paper Technical Association (2007), 19(2): 63-67
URI: http://repository.iitr.ac.in/handle/123456789/13245
Issue Date: 2007
Keywords: Aspergillus niger NKUC3-0.2
Bleaching
Brightness and viscosity
Eucalyptus tereticornis
Kraft pulping
Populous deltoids
ISSN: 3795462
Author Scopus IDs: 7005982560
6602705260
57200693244
18634607400
Author Affiliations: Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001
Tyagi, C.H.
Jindal, A.K.
Mittal, A., Star Paper Mills Limited, Saharanpur 247 001
Corresponding Author: Dutt, D.; Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247 001
Appears in Collections:Journal Publications [PT]

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