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Title: Cellulase-assisted refining optimization for saving electrical energy demand and pulp quality evaluation
Authors: Singh R.
Bhardwaj N.K.
Choudhury B.
Published in: Journal of Scientific and Industrial Research
Abstract: Papermaking process necessitates fibers to be refined mechanically to develop greater bonding potential. This is achieved in refining step, which requires a huge energy demand. In the present paper, efficiency of biocatalysis was investigated for saving energy by taking different enzyme dosages, reaction times and conditions that were compatible for papermaking process. Bleached mixed hardwood pulp was taken as raw material along with cellulase as biocatalyst to get good quality paper as product. After the enzymatic pre-treatment, pulp was refined in PFI mill. Parameters were compared in terms of number of PFI revolutions required to achieve fixed level of Canadian standard freeness (CSF), 300 ml without affecting the physical strength properties of paper. Action of cellulase on pulp was evaluated by reducing sugar analysis, pulp viscosity determination and amount of fines contents. This treatment achieved reduction in refining energy approx 29% (specific energy consumption reduced from 1.33 kWh/kg of pulp to 0.94 kWh/kg pulp) at an optimized dosage and time with improved pulp quality. © 2015, Scientific Publishers. All rights reserved.
Citation: Journal of Scientific and Industrial Research (2015), 74(8): 471-475
Issue Date: 2015
Publisher: Scientific Publishers
Keywords: Cellulase
Enzyme activity
Enzyme biocatalysis
Paper strength
Power consumption
ISSN: 224456
Author Scopus IDs: 57215037777
Author Affiliations: Singh, R., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, U.P. 247001, India
Bhardwaj, N.K., Avantha Centre for Industrial Research and Development, Yamuna Nagar, Haryana 135001, India
Choudhury, B., Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, U.K 247667, India
Corresponding Author: Bhardwaj, N.K.; Avantha Centre for Industrial Research and DevelopmentIndia
Appears in Collections:Journal Publications [BT]

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