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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13131
Title: Effect of enzyme concoctions on fiber surface roughness and deinking efficiency of sorted office paper
Authors: Dutt, Dharm
Tyagi C.H.
Singh R.P.
Kumar A.
Published in: Cellulose Chemistry and Technology
Abstract: Bio-deinking of sorted office paper (SOP) by various enzyme concoctions having cellulase, xylanase, amylase and lipase was investigated. The effect of various enzyme concoctions on pulp brightness, effective residual ink concentration (ERIC), deinkability factor based on brightness (DB), deinkability factor based on ERIC (DE), dirt counts, strength properties and effluent characteristics was studied and compared with their respective control. Also, the effect of different enzyme concoctions on fiber surface and fiber morphological changes during the deinking process were studied by atomic force microscopy (AFM) and scanning electron microscopy (SEM). Results showed that, compared to control, a maximum improvement in brightness by 13.30% (ISO), DB 37.79%, and DE 83.0% and a reduction in ERIC and dirt counts by 68.18 and 88.04%, respectively, were achieved with a concoction of cellulase+xylanase+amylase+lipase at a dosage of 6, 3, 1.5 and 6 IU/mL, respectively. This indicated that there was a synergistic deinking effect among the concoctions of these enzymes as fiber surface roughness increased by 159% compared to control.
Citation: Cellulose Chemistry and Technology (2012), 46(44084): 611-623
URI: http://repository.iitr.ac.in/handle/123456789/13131
Issue Date: 2012
Keywords: Biodeinking efficiency
Enzyme concoctions
Fiber surface roughness
Sorted office paper
ISSN: 5769787
Author Scopus IDs: 7005982560
6602705260
57211196378
36063155900
Author Affiliations: Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247 001, India
Tyagi, C.H., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247 001, India
Singh, R.P., Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, India
Kumar, A., Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee, India
Corresponding Author: Dutt, D.; Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, 247 001, India
Appears in Collections:Journal Publications [PT]

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