Cover Image

Enzymatic deinking of various types of waste paper: efficiency and characteristics

The aim of the present study was to characterize the enzymatic deinking of various types of waste paper. Studies on the optimization of enzymatic deinking have been performed previously using commercially available enzyme preparations containing cellulase and hemicellulase. The enzymatic deinking of...

Full description

Saved in:
Bibliographic Details
Main Authors: Chee Keong Lee, Darah Ibrahim, Ibrahim Che Omar
Format: Non-Indexed Article
Published: 2013
Online Access:http://discol.umk.edu.my/id/eprint/8149/
http://www.sciencedirect.com/science/article/pii/S1359511312004564
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.umk.eprints.8149
record_format eprints
spelling my.umk.eprints.81492022-05-23T10:25:33Z http://discol.umk.edu.my/id/eprint/8149/ Enzymatic deinking of various types of waste paper: efficiency and characteristics Chee Keong Lee Darah Ibrahim Ibrahim Che Omar The aim of the present study was to characterize the enzymatic deinking of various types of waste paper. Studies on the optimization of enzymatic deinking have been performed previously using commercially available enzyme preparations containing cellulase and hemicellulase. The enzymatic deinking of different types of waste paper demonstrated a high efficiency of 86.6% on laser-printed paper, but a low deinking efficiency of 12.9% was obtained with newspaper. All enzymatic treatments significantly improved the drainage rate of the deinked waste paper. Enzymatic deinking increased the tensile index of magazine paper but reduced the tensile index of bubble jet-printed paper, photocopy paper and newspaper. Enzymatic hydrolysis caused a 21.1% reduction in the tear index for bubble jet-printed paper, but a 3.1% increase in the tear index was obtained for laser-printed paper relative to respective blank. In addition, enzymatic hydrolysis increased the burst index by 4.7% relative to blank for laser-printed paper. However, photocopy paper showed the highest reduction (8.3%) in the burst index relative to blank. Taken together, these results suggest that enzymatic hydrolysis is both advantageous and detrimental to the mechanical properties of deinked paper. Thus, the proper regulation of enzymatic hydrolysis is crucial to improve the quality of recycled paper. 2013 Non-Indexed Article NonPeerReviewed Chee Keong Lee and Darah Ibrahim and Ibrahim Che Omar (2013) Enzymatic deinking of various types of waste paper: efficiency and characteristics. Process Biochemistry, 48 (2). pp. 299-305. ISSN 1359-5113 http://www.sciencedirect.com/science/article/pii/S1359511312004564
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 The aim of the present study was to characterize the enzymatic deinking of various types of waste paper. Studies on the optimization of enzymatic deinking have been performed previously using commercially available enzyme preparations containing cellulase and hemicellulase. The enzymatic deinking of different types of waste paper demonstrated a high efficiency of 86.6% on laser-printed paper, but a low deinking efficiency of 12.9% was obtained with newspaper. All enzymatic treatments significantly improved the drainage rate of the deinked waste paper. Enzymatic deinking increased the tensile index of magazine paper but reduced the tensile index of bubble jet-printed paper, photocopy paper and newspaper. Enzymatic hydrolysis caused a 21.1% reduction in the tear index for bubble jet-printed paper, but a 3.1% increase in the tear index was obtained for laser-printed paper relative to respective blank. In addition, enzymatic hydrolysis increased the burst index by 4.7% relative to blank for laser-printed paper. However, photocopy paper showed the highest reduction (8.3%) in the burst index relative to blank. Taken together, these results suggest that enzymatic hydrolysis is both advantageous and detrimental to the mechanical properties of deinked paper. Thus, the proper regulation of enzymatic hydrolysis is crucial to improve the quality of recycled paper.
format Non-Indexed Article
author Chee Keong Lee
Darah Ibrahim
Ibrahim Che Omar
spellingShingle Chee Keong Lee
Darah Ibrahim
Ibrahim Che Omar
Enzymatic deinking of various types of waste paper: efficiency and characteristics
author_facet Chee Keong Lee
Darah Ibrahim
Ibrahim Che Omar
author_sort Chee Keong Lee
title Enzymatic deinking of various types of waste paper: efficiency and characteristics
title_short Enzymatic deinking of various types of waste paper: efficiency and characteristics
title_full Enzymatic deinking of various types of waste paper: efficiency and characteristics
title_fullStr Enzymatic deinking of various types of waste paper: efficiency and characteristics
title_full_unstemmed Enzymatic deinking of various types of waste paper: efficiency and characteristics
title_sort enzymatic deinking of various types of waste paper: efficiency and characteristics
publishDate 2013
url http://discol.umk.edu.my/id/eprint/8149/
http://www.sciencedirect.com/science/article/pii/S1359511312004564
_version_ 1763303942700138496
score 13.211869

Similar Items