OPTIMAL OZONE BLEACHING OF BAGASSE SODA-OXYGEN PULP
Ozone bleaching of bagasse soda-oxygen pulp was carried out in this study. Based on the results from the orthogonal experiment, it was found that influence of process variables on pulp properties was as follows: bleaching time > pulp consistency > ozone production. Additionally, a further single factor experiment confirmed that the optimal conditions of ozone bleaching were pulp consistency of 40％, ozone production of 0.9 kg·min.1/odt at ambient temperature for 10 min, and the resultant pulp showed kappa number of 9.21, brightness of 69.3％ISO, and viscosity of 682 mL·g.1, in which the degree of delignification, the increment of brightness, and the drop of viscosity of the bleached pulp were 43％, 10.7％ISO, and 145 mL·g.1, respectively. This pulp could, subsequently, be bleached to the brightness over 80％ISO with hydrogen peroxide bleaching under a mild condition, and its viscosity could be hardly lowered, and also the strength properties were comparable with unbleached pulp.
ozone bleaching bagasse soda-oxygen pulp peroxide bleaching TCF
Wu Zudong Chen Keli
The Research Center of Pulp & Paper Engineering,Kunming University of Science and Technology,Kunming, China
国际会议
广州
英文
600-603
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）