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Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics

Enzymatic and chemical deinking not only significantly influence the optical and mechanical properties of deinked paper, but also influence the pulp properties and wastewater effluent generated. Both enzymatic and chemical deinking of mixed office wastepaper (MOW) and old newspaper (ONP) showed imp...

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Main Authors: C.K.Lee, Darah Ibrahim, Ibrahim Che Omar, Wan Daud Wan Rosli
Format: Indexed Article
Published: 2011
Online Access:http://discol.umk.edu.my/id/eprint/7441/
http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_4_3859_Lee_IIW_Enzym_Chem_Dinking_MOW_ONP_Effluent_1747.pdf
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spelling my.umk.eprints.74412022-05-23T10:00:13Z http://discol.umk.edu.my/id/eprint/7441/ Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics C.K.Lee Darah Ibrahim Ibrahim Che Omar Wan Daud Wan Rosli Enzymatic and chemical deinking not only significantly influence the optical and mechanical properties of deinked paper, but also influence the pulp properties and wastewater effluent generated. Both enzymatic and chemical deinking of mixed office wastepaper (MOW) and old newspaper (ONP) showed improvement in brightness (1.4-4.7 units),tensile index (1-14%), burst index (1.2-308%), freeness (1.9%-2.9%), andresidual ink removal (31.1-51.2%) but caused loss in opacity (0.1-2.6%) and tear index (0.1-9.6%). Chemical Oxygen Demand (COD) analysis indicated that effluent produced from enzymatic deinking were about 33.9% and 33.8% lower compared to chemical deinking of ONP and MOW, respectively. Meanwhile, Biological Oxygen Demand (BOD5) obtained from enzymatic deinking of MOW and ONP were 47.1% and 39.3% lower compared to the chemical deinking process, respectively.The result obtained in this work demonstrated that the quality of the pulp and paper obtained from enzymatic deinking process was better than thatfrom the chemical deinking process. This suggests that enzymatic deinking has high potential as an alternative to the chemical method. 2011-11 Indexed Article NonPeerReviewed C.K.Lee and Darah Ibrahim and Ibrahim Che Omar and Wan Daud Wan Rosli (2011) Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics. BioResources, 6 (4). pp. 3859-3875. ISSN 1930-2126 http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_4_3859_Lee_IIW_Enzym_Chem_Dinking_MOW_ONP_Effluent_1747.pdf
institution Universiti Malaysia Kelantan
building Perpustakaan Universiti Malaysia Kelantan
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Kelantan
content_source UMK Institutional Repository
url_provider http://umkeprints.umk.edu.my/
description Enzymatic and chemical deinking not only significantly influence the optical and mechanical properties of deinked paper, but also influence the pulp properties and wastewater effluent generated. Both enzymatic and chemical deinking of mixed office wastepaper (MOW) and old newspaper (ONP) showed improvement in brightness (1.4-4.7 units),tensile index (1-14%), burst index (1.2-308%), freeness (1.9%-2.9%), andresidual ink removal (31.1-51.2%) but caused loss in opacity (0.1-2.6%) and tear index (0.1-9.6%). Chemical Oxygen Demand (COD) analysis indicated that effluent produced from enzymatic deinking were about 33.9% and 33.8% lower compared to chemical deinking of ONP and MOW, respectively. Meanwhile, Biological Oxygen Demand (BOD5) obtained from enzymatic deinking of MOW and ONP were 47.1% and 39.3% lower compared to the chemical deinking process, respectively.The result obtained in this work demonstrated that the quality of the pulp and paper obtained from enzymatic deinking process was better than thatfrom the chemical deinking process. This suggests that enzymatic deinking has high potential as an alternative to the chemical method.
format Indexed Article
author C.K.Lee
Darah Ibrahim
Ibrahim Che Omar
Wan Daud Wan Rosli
spellingShingle C.K.Lee
Darah Ibrahim
Ibrahim Che Omar
Wan Daud Wan Rosli
Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics
author_facet C.K.Lee
Darah Ibrahim
Ibrahim Che Omar
Wan Daud Wan Rosli
author_sort C.K.Lee
title Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics
title_short Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics
title_full Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics
title_fullStr Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics
title_full_unstemmed Enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics
title_sort enzymatic and chemical deinking of mixed office wastepaper and old newspaper : paper quality and effluent characteristics
publishDate 2011
url http://discol.umk.edu.my/id/eprint/7441/
http://www.ncsu.edu/bioresources/BioRes_06/BioRes_06_4_3859_Lee_IIW_Enzym_Chem_Dinking_MOW_ONP_Effluent_1747.pdf
_version_ 1763303842041036800
score 13.211869

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