Comparison of ECF, TCFZ and TCFPaa bleaching effluent characteristics

被引：0
|
作者：
Fuhrmann, A [1 ]
Rautonen, R [1 ]
Vuorenvirta, K [1 ]
机构：
[1] Finnish Pulp & Paper Res Inst, FIN-02151 Espoo, Finland
来源：
ADVANCES IN LIGNOCELLULOSICS CHEMISTRY FOR ECOLOGICALLY FRIENDLY PULPING AND BLEACHING TECHNOLOGIES | 1998年
关键词：
D O I：
暂无
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Softwood and hardwood kraft pulps were oxygen delignified in one or two stages and bleached with chlorine dioxide, ozone, peracetic acid and peroxide in ECF and TCFZ and TCFPaa sequences. The effects of a selective acid hydrolysis stage were also studied. Effluent characteristics, which are important for loop closure at modern bleaching plants, were determined. The results of the study give an indication of how the pulp components found in various TCF and ECF bleaching effluents may affect the processes and products with increasing loop closure.
引用
收藏
页码：513 / 516
页数：4
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