EFFECT OF PREHYDROLYSIS AND ENZYME POST-TREATMENT ON DISSOLVING PULP FROM POPLAR
Dissolving pulps are the raw materials for the production of many different end-products. Poplar is a very good source of cellulose. In this paper, the prehydrolysis conditions of dissolving pulp from poplar were studied. The conditions of 1:6 ratio of liquor to chip, 120 minutes at the maxi temperature of 165 ℃ were desired in the prehydrolysis process. The results of OQP bleaching process of cooked pulp showed that the kappa number, pentosan content, α-cellulose content and brightness of bleached pulp were 1.7, 4.1％, 94.1％ and 86.5％ISO, respectively. Upgrading experiment of dissolving pulp was researched by using xylanase and cellulase. The results obtained from this experiment indicated that the post-treatment of the dissolving pulp with these enzymes could increase α-cellulose content in dissolving pulp from 94.1％ to above 97.0％.
poplar dissolving pulp prehydrolysis upgrading
Wu Chaojun Zhao Chuanshan Li Quanpeng Guo Yanyan Meng Chao
Shandong Key Laboratory of Pulp and Paper Engineering, Shandong Institute of Light Industry,Jinan, 250353
国际会议
广州
英文
826-829
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）