摘要
探讨了改善Ｈ＿２Ｏ＿２漂白化学浆效率的途径。结果表明，高温漂白和漂前预处理可明显改善Ｈ＿２Ｏ＿２的漂白效率。当漂白温度由６０℃提高到９０℃时，白度增加６％ＩＳＯ。预处理效果的大小顺序为：木素活化剂＞螯合剂＞木聚糖酶＞硫酸。活化剂－螯合剂复合处理不仅可进一步提高白度，而且明显抑制了纤维素的降解。
The ways of improving H_2O_2 efficiency in bleaching of chemical pulps were investigated in this paper.The results showed that the H_2O_2 bleaching efficiency was improved obviously with high-temperature bleaching and pretreatment prior to bleaching. Brightness increased by 6% ISO when bleaching temperature was raised from 60℃ to 90℃. The order of the pretreatmemt effectiveness is lignin-activating agent, chelating agent, xylanase and sulphuric acid., The activating-chelating complex treatment may not only further increase brightness but also restrain cellulose depolymerization evidently.
出处
《中国造纸》
CAS
北大核心
1996年第4期16-20,共5页
China Pulp & Paper
关键词
硫酸盐浆
过氧化氢
漂白
马尾松
木浆
kraft pulp,hydrogen peroxide bleaching,chelating treatment,activating treatment,enzyme treatment
