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Title: Bio-deinking of Mixed Office Waste Paper by Penicillium citrinum NCIM-1398 & its Comparative Study with Conventional Chemical Deinking
Authors: Biswas P.
Bharti A.K.
Dutt D.
Kadam A.
Martin A.
Lucian A.
Published in: BioResources
Abstract: Penicillium citrinum NCIM-1398 is a co-producer of endo β-1,4-glucanase, xylanase, and amylase enzymes. The synergistic effect of the enzymes present in the cocktail was found to be advantageous in deinking white mixed office waste (MOW) paper. Enzymatic deinking of MOW reduced the dependence on chemicals by up to 50% during chemical deinking and improved optical properties compared with the chemical deinking process. The chemi-enzymatic approach improved pulp brightness by 12.6% compared with MOW pulp. The ERIC (Effective residual ink concentration) value was reduced by up to 39.2%, whereas the strength properties of tear index, tensile index, and burst index achieved gains of 3.2%, 9.9%, and 6.2%, respectively, compared with the control. Whereas chemi-enzymatic treatment showed a reduction of 67.1% in COD and 61.8% in BOD, and there was an increase of 15.4% in total solid of effluents respectively, compared with the respective controls. Scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray diffraction (XRD) studies revealed that the pulp was modified by enzymatic and chemi-enzymatic treatments, which facilitate ink removal during deinking of pulp.
Citation: BioResources (2019), 14(3): 6544-6557
Issue Date: 2019
Publisher: North Carolina State University
Keywords: White mixed office waste
Penicillium citrinum
Enzyme cocktail
Bio-deinking efficiency
Fiber surface modification
ISSN: 1930-2126
Author Affiliations: Biswas, P., Bharti, A.K., Kadam, A., Dutt, D., 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:
Appears in Collections:Journal Publications [PT]

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