Improving peroxide bleaching of chemical pulps by stabilizing manganese

被引：13

作者：

Ju, Y ^{[2
]}

Ni, YH

Ohi, H

机构：

[1] Univ New Brunswick, Dr Jack McKenzie Limerick Pulp & Paper Res & Educ, Fredericton, NB E3B 6C2, Canada

[2] Univ Tsukuba, Inst Agr & Forest Engn, Tsukuba, Ibaraki 305, Japan

来源：

JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY | 1999年 / 19卷 / 04期

关键词：

D O I：

10.1080/02773819909349615

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：

Based on the earlier results' that unlike Mn(III), Mn(II) is not catalytically active towards manganese induced peroxide decomposition under alkaline conditions, we studied to improve peroxide bleaching of an oxygen delignified pulp by reducing the manganese in the pulp fibers from its high oxidation state and then stabilizing the reduced manganese with additives such as DTPA. It was shown that pulp fibers under an acidic condition are effective reducing agents and so is sodium hydrosulfite. With such a strategy it was found that the peroxide decomposition catalyzed by the residual manganese present in pulp fibers can be minimized and, consequently, the peroxide bleaching performance can be improved.

引用

页码：323 / 334

页数：12