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Improvement of the physical properties of reprocessed paper by using biological treatment with modified cellulase.

Authors :
Park J
Park K
Source :
Bioresource technology [Bioresour Technol] 2001 Aug; Vol. 79 (1), pp. 91-4.
Publication Year :
2001

Abstract

A primary need for waste paper reprocessing is to preserve optical properties and the physical strength of the paper fibers. In this study, modified cellulase with copolymer, polyethylene oxide (PEO) derivatives and maleic anhydride (MA) was applied to the reprocessing of mixed office waste (MOW). Modified cellulase was prepared by a chemical reaction between amino groups of the cellulase and the MA functional groups of the copolymer. In MOW reprocessing, modified cellulase improved several physical properties of the paper including freeness, optical properties, and physical strength compared to the conventional process. Even though native cellulase improved the physical properties, paper treated with modified cellulase exhibited an increase in physical properties such as tensile strength and internal bond over those of unmodified cellulase. From these results, modified cellulase method is a new biological treatment that will save pulp resources, which are added to waste paper reprocessing to maintain the strength of paper.

Details

Language :
English
ISSN :
0960-8524
Volume :
79
Issue :
1
Database :
MEDLINE
Journal :
Bioresource technology
Publication Type :
Academic Journal
Accession number :
11396914
Full Text :
https://doi.org/10.1016/s0960-8524(00)00185-1