Effect of Xylanase Pretreatment on Hydrogen Peroxide Bleaching of Wheat Straw pulp

摘要：

In this paper,the influence of xylanase pretreatment of Soda-AQ wheat straw pulp on the efficiency of hydrogen peroxide bleaching was investigated.The results showed that the xylanase pretreatment can improve the efficiency of hydrogen peroxide bleaching.A higher brightness of XP bleached pulp was obtained when a dosage of 2.6-4.3 XU/g pulp was used and pH was not adjusted in the xylanase pretreatment process.FTIR results showed that the lignin structures and hydroxyl groups in the pulp changed during the xylanase pretreatment and peroxide bleaching of Soda-AQ wheat straw pulp.On the other hand,the addition of DTPA during the xylanase pretreatment not only improved the brightness of hydrogen peroxide bleached pulp but also reduced the consumption of hydrogen peroxide.The addition of 0.4％ sodium sulfite during the xylanase pretreatment can increase the brightness of bleached pulp and it did not increase the consumption of hydrogen peroxide.

关键词： Soda-AQ wheat straw pulp xylanase pretreatment DTPA sodium sulfite hydrogen peroxide bleaching

作者: CHAOJUN WU WEIWEI LI LIHUAN MO JUN LI WENYAN MA JIAN ZENG KEFU CHEN

作者单位: Guangdong Public Laboratory of Paper Technology and Equipment,South China University of Technology,G Guangdong Public Laboratory of Paper Technology and Equipment,South China University of Technology,G

会议类型: 国际会议

会议名称: 第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)

会议地点: 天津

会议语种:英文

页码: 433-437

在线出版日期: 2008-05-14（万方平台首次上网日期，不代表论文的发表时间）