Preliminary Study on Photochemical Bleaching of Poplar CTMP
(0) Photochemical bleaching of pulp based on singlet oxygen mechanism is a novel environmentally friendly bleaching method.The article investigated mainly photochemical bleaching of poplar CTMP based on singlet oxygen mechanism by using self-assembly device for photochemical bleaching.In the experiments,Tinolux(R)-BBS was used as photosensitizer to activate oxygen into singlet oxygen.According to orthogonal experiment of L9(34),the influence of primary factors on photochemical bleaching was determined and the optimum bleaching conditions of BBS as photosensitizer were found as followed: temperature 65℃,BBS charge 0.05％ based on oven-dried pulp(o.d.p.),sodium hydroxide charge 1％(o.d.p.)and time 120 minutes.Then the probability of photochemical bleaching served as pre-bleaching of hydrogen peroxide bleaching was probed and the synergistic effect of photochemical bleaching on hydrogen peroxide bleaching was found.Therefore,photochemical bleaching served as the pre-bleaching of hydrogen peroxide bleaching of poplar CTMP was totally feasible.
Photochemical Bleaching Tinolux(R)-BBS Photosensitizer Singlet Oxygen Hydrogen Peroxide
HUI LANFENG QIAN XUEREN LIU ZHONG
Tianjin Key Lab of Pulp and Paper,Tianjin University of Science and Technology,Tianjin 300222,China Northeast Forestry University,Harbin 150040,China
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
462-467
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）