Influence of sodium nitrate pretreatment on bleachability of wheat straw pulp

被引：0
|
作者：
Zhai, HM [1 ]
Li, ZY [1 ]
Xiao, LL [1 ]
机构：
[1] Nanjing Forestry Univ, Coll Chem Engn, Nanjing 210037, Peoples R China
来源：
2ND INTERNATIONAL SYMPOSIUM ON TECHNOLOGIES OF PULPING, PAPERMAKING AND BIOTECHNOLOGY ON FIBER PLANTS, PROCEEDINGS | 2004年
关键词：
D O I：
暂无
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
The effects of NaNO3/H+ pretreatment on bleachability and its pollution reduction of wheat straw Soda-AQ pulp were studied. The results obtained indicated that sodium nitrate pretreatment could activate residual lignin in the pulp while delignifying: the delignification in the oxygen bleaching stage can obviously be increased, and the pretreatment also improves the efficiency of alkaline peroxide bleaching, especially for pressurized hydrogen peroxide bleaching. In addition, due to the effects of pretreatment, the hypochlorite charge in H-stage can be decreased greatly, which results in a low chlorinated compounds discharge and low pollution to environment. Primary study showed there is a possibility of the effluents from the pretreatment stage to be recycled. Further study is underway.
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页码：163 / 166
页数：4
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