Hydrogen peroxide production during oxygen bleaching of Eucalyptus globulus kraft pulp -: origin of cellulose degradation

被引：0
|
作者：
Duarte, AP [1 ]
Lachenal, D
机构：
[1] Univ Beira Interior, Dept Paper Sci & Tecnol, P-6201001 Covilha, Portugal
[2] EFPG INPG, F-38402 St Martin Dheres, France
来源：
PAPERI JA PUU-PAPER AND TIMBER | 2002年 / 84卷 / 04期
关键词：
oxygen bleaching; Eucalyptus globulus kraft pulp; hydrogen peroxide; metal ions;
D O I：
暂无
中图分类号：
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号：
0805 ; 080502 ; 0822 ;
摘要：
The formation of hydrogen peroxide during oxygen bleaching of Eucalyptus globulus was studied, in an attempt to confirm the origin of cellulose degradation during this bleaching process, as well as the effect of metal ions on the degradation. Hydrogen peroxide was detected in the effluent of the oxygen treatment of both bleached and unbleached pulps. Hydrogen peroxide formation was higher in the case of the presence of lignin (unbleached pulp) or bleached pulp with addition of phenolic lignin model compound (vanillic alcohol). The metal ions present in the pulp influence the content of H2O2 detected in the effluents of oxygen treatments.
引用
收藏
页码：275 / 277
页数：3
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