Response of Eucalyptus camaldulensis and Acacia mangium kraft pulp in different ECF bleaching options

被引：0
作者：
Md. Rezaul Karim
Md. Nazrul Islam
Raimo O. Malinen
机构：
[1] Chittagong University of Engineering and Technology,Department of Chemistry
[2] Khulna University,Forestry and Wood Technology Discipline
[3] FIBROM,undefined
来源：
Wood Science and Technology | 2011年 / 45卷
关键词：
Kraft Pulp; Kappa Number; Chlorine Dioxide; Bleached Pulp; Acacia Mangium;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, the response of Eucalyptus camaldulensis and Acacia mangium kraft pulp to different options of ECF bleaching was investigated. Oxygen-delignified pulps of both species having similar kappa number (c.a. 12) were used. Both the pulps were prebleached using conventional ClO2 stage (D0), combined use of ClO2 and O3 (DZ), hot acid treatment before D0 (AhotD0) and hot acid treatment before (DZ) i.e., Ahot(DZ), hot ClO2 treatment (DHT) and Ahot followed by DHT (AhotDHT). All prebleached pulps were finally bleached to 90%+ ISO brightness using D1 option. The overall benefits of other options were not considerable compared to D0 and (DZ). From the ClO2 consumption point of view, for a certain species, the option Ahot(DZ) was the best. Instead of D1 in final bleaching, pressurized hydrogen peroxide (PO) was also investigated in the case of D0 and (DZ) prebleached pulps. (PO)-bleached pulp produced higher brightness stability but lower viscosity compared to D1.
引用
收藏
页码：473 / 485
页数：12
相关论文
共 41 条
[1]  
Chirat C(1997)(DZ) and (ZD) bleaching: fundamentals and application J Pulp Paper Sci 23 289-292
[2]  
Lachenal D(2003)Eucalyptus kraft pulp bleaching with chlorine dioxide at high temperature J Pulp Paper Sci 29 64-69
[3]  
Angelier R(2001)Effect of the acid stage in ECF bleaching on Pulp Pap Canada 102 89-218
[4]  
Viardin MT(1982) kraft pulp bleachability and strength Holzforschung 36 55-281
[5]  
Eiras KM(2007)The chemistry of delignification APPITA J 60 228-79
[6]  
Colodette JL(1997)Suitability of the combined use of chlorine dioxide and ozone in prebleaching of Carbohydr Res 302 213-83
[7]  
Furtado FP(1993) kraft pulp J of Wood Chem Tech 13 261-44
[8]  
Evtuguin DV(2001)The contribution to kappa number from Hexenuronic acid groups in pulp xylan Nordic Pulp Pap Res J 16 72-480
[9]  
Gomes TM(2004)Acid extraction of the alkaline wood pulps (kraft or soda/AQ) before or during bleaching–Reason and opportunity Nordic Pulp Paper Res J 19 78-53
[10]  
Gierer J(2004)On the importance of the structural composition of pulp for the selectivity of ozone and chlorine dioxide bleaching Paperi Ja Puu 86 39-376
12345