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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13132
Title: Horseradish and potato peroxidase biobleaching of mixed office waste paper
Authors: Biswas P.
Bharti A.K.
Dutt, Dharm
Kadam A.
Martin A.
Hubbe
Lucian A.
Lucia
Published in: BioResources
Abstract: Mixed office waste (MOW) pulp was biodeinked with crude enzyme extracted from Penicillium citrinum NCIM-1398. Crude enzyme dose was charged having activities of endo β-1,4-glucanase 6I U/g, xylanase 876.19 IU/g, and amylase 26.53 IU/g. The present study aimed to bleach the biodeinked MOW pulp with 3% H2O2 in the presence of a stabilizing agent viz. 0.1% ethylenediaminetetraacetic acid (EDTA) and 0.1% magnesium sulfate (MgSO4), which improved the pulp brightness up to 4.2% and the ERIC value was reduced by 24.1%. The residual H2O2 left in the pulp slurry after bleaching was subjected to peroxidase treatment using enzyme dose 0.017 U/g at 20 °C for 3 h at 200 rpm. Horseradish peroxidase reduced residual H2O2 in the pulp slurry from 0.30 to 0.05 g/L and improved the brightness of pulp to 88.1%, while the ERIC value was reduced by 20.9%. Potato peroxidase reduced residual H2O2 from 0.30 to 0.04 g/L, reduced the ERIC value by 30.9%, and improved the brightness to 89.2%. Peroxidase treatment was not only observed to consume the residual hydrogen peroxide left after the bleaching stage but also may come up as eco-friendly technology to recycle MOW paper as writing printing grade paper. © 2019, BioResources.
Citation: BioResources (2019), 14(4): 8600-8613
URI: https://doi.org/10.15376/biores.14.4.8600-8613
http://repository.iitr.ac.in/handle/123456789/13132
Issue Date: 2019
Publisher: North Carolina State University
Keywords: Biobleaching
Horseradish peroxidase
Hydrogen peroxide bleaching
Mixed office waste (MOW) paper
Potato peroxidase
Stabilizers
ISSN: 1930-2126
Author Scopus IDs: 57211887023
55756871200
7005982560
57210596534
Author Affiliations: Biswas, P., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247 001, India
Bharti, A.K., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247 001, India
Dutt, D., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247 001, India
Kadam, A., Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247 001, India
Corresponding Author: Biswas, P.; Department of Paper Technology, Indian Institute of Technology Roorkee, Saharanpur CampusIndia; email: pallavibiswas1@gmail.com
Appears in Collections:Journal Publications [PT]

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