TCF bleaching of wheat straw pulp using ozone and xylanase. Part A: paper quality assessment

被引:83
作者
Roncero, MB [1 ]
Torres, AL [1 ]
Colom, JF [1 ]
Vidal, T [1 ]
机构
[1] Univ Politecn Cataluna, ETSEI Terrassa, Dept Text & Paper Engn, Terrassa 08222, Spain
关键词
straw pulp; Eucalyptus; bleaching; TCF; ozone; xylanase; paper; COD; colour; cristallinity; XRD; SEM;
D O I
10.1016/S0960-8524(02)00224-9
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The XOAZRP TCF sequence was applied to bleach wheat straw pulps. Following each bleaching stage, the properties of the pulp (viz. kappa number, standard viscosity, borohydride viscosity and brightness) and of the resulting effluents were determined. The performance of the reagents was analyzed through the studies of xylanase treatment and crystallinity and scanning electron microscopy of the pulps. Finally, the pulp was refined at 1000 revolutions in a PFI mill and the mechanical properties of the resulting paper were determined and compared with those of paper from a eucalyptus pulp. Despite its shortcomings, wheat straw pulp can be effectively bleached with the proposed TCF sequence. (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码:305 / 314
页数:10
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