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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13296
Title: Mitigation of adsorbable organic halides in combined effluents of wheat straw soda-AQ pulp bleached with cellulase-poor crude xylanases of coprinellus disseminatus in elemental chlorine free bleaching
Authors: Singh S.
Dutt D.
Published in: Cellulose Chemistry and Technology
Abstract: Novel cellulase-poor crude xylanases from strains SH-1 NTCC-1163 (enzyme-A), and SH-2 NTCC-1164 (enzyme-B) of Coprinellus disseminatus, mitigated kappa number (56.27 and 58.41%) of wheat straw soda-AQ pulp after OX AE and OXBE bleaching stages, respectively. Significant reductions in AOX (25.00 and 22.05%), with a slight decrease in some strength properties, owing to removal of hemicelluloses, was observed. The removal of hemicelluloses was further validated by an increase in pulp viscosity (6.82 and 4.93%), COD (43.15 and 43.15%) and colour (51.99 and 62.99%) for OX AE1D1E2D2 and OX BE1D1E2D2 sequences, respectively, compared to their respective controls. Compared to controls, AOX reduction was higher in OXAE1DE2P (38.75%) and OXBE1DE2P (36.25%) than OXAE 1D1E2D2 (25.00%) and OX BE1D1E2D2 (22.05%) bleached pulps, but at the cost of brightness. AOX, COD and colour were significantly reduced on the 6th day of incubation of combined bleaching effluents.
Citation: Cellulose Chemistry and Technology (2014), 48(43832): 127-135
URI: http://repository.iitr.ac.in/handle/123456789/13296
Issue Date: 2014
Keywords: AOX
Biobleaching
Coprinellus disseminates
Wheat straw pulp
ISSN: 5769787
Author Scopus IDs: 7406402372
7005982560
Author Affiliations: Singh, S., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247001, India
Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247001, India
Corresponding Author: Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur 247001, India
Appears in Collections:Journal Publications [PT]

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