摘要
探讨了过氧化氢(H2O2)漂白麦草化学机械浆的各种影响因素。优化后的工艺条件为:H2O26%(质量分数,下同),浆浓20%,MgSO40.05%,二乙烯三胺五乙酸(DTPA)0.3%,Na2SiO35.0%,NaOH3.5%,漂白温度80℃,漂白时间2.5h,白度可以达到53%(ISO),能够满足配抄普通文化用纸的要求。
Various impacting factors in the hydrogen peroxide bleaching of wheat straw chemomechanical pulp （CMP） were investigated. The optimized bleaching technology was as follows ： 6 % H2O2,20 % pulp consistence, 0.05 % MgSO4,0.3 % DTPA,5.0 % Na2SiO3,3.5 % NaOH, 80 ℃ bleaching temperature, 2.5 h bleaching time, with which the CMP brightness reached 53 % （ISO）. Based on the results obtained above, a new technology, i. e. ,enzymatic pretreatment followed by high consistence two-stage hydrogen peroxide bleaching was proposed so as to further improve CMP brightness, to increase its additional value, as well as to develop its application.
出处
《林产化学与工业》
EI
CAS
CSCD
2007年第1期89-92,共4页
Chemistry and Industry of Forest Products
关键词
麦草
化学机械浆
过氧化氢
漂白
wheat straw
chemomechanical pulp
hydrogen peroxide
bleaching
