MODIFIED OPAL： A NOVEL STABILIZER FOR HYDROGEN PEROXIDE BLEACHING OF PULPS

编号 zgly0000332845

文献类型 期刊论文

文献题名 MODIFIED OPAL： A NOVEL STABILIZER FOR HYDROGEN PEROXIDE BLEACHING OF PULPS

学科分类 220.5570;林产化学加工学

作者 XuerenQian  XianhuiAn  WenboLiu  GangYu  ZhanqianSong 

作者单位 CollegeofMaterialsScienceandEngineering 

母体文献 天津科技大学学报 

年卷期 2004,19(A01)

页码 111-115

年份 2004 

分类号 TS745 

关键词 纸浆  过氧化氢漂白  改性蛋白石  稳定剂  亮度  硫酸镁 

文摘内容 The possibility of modified opal as the stabilizer ofhydrogen peroxide bleaching was investigated. Theresults showed that the modified opal in place ofsodium silicate as the stabilizer of hydrogen peroxidebleaching is feasible. At the same dosage, above 3%ISO can be increased for both wheat straw pulp anddeinked pulp. The stabilizing ability of the modifiedopal to hydrogen peroxide bleaching of pulp isimproved markedly. It is favorable for bleaching toincrease temperature and time within a permissiveextent. The suitable process conditions are I0% ofpulp consistency, 3% of hydrogen peroxide, 1.5% ofsodium hydroxide, 3% of the modified opal, 70~and 60 min when the modified opal is used as thestabilizer of hydrogen peroxide bleaching. At theseconditions, the brightness gain can reach about 16%ISO for wheat straw pulp. In addition, it is favorablefor bleaching to add a little magnesium sulfate whenthe modified opal is used as the stabilizer ofhydrogen peroxide bleaching, the brightness of pulpcan increase 1%ISO if0.05% of magnesium sulfate isadded. The cost analysis indicated that the modifiedopal is superior to sodium silicate as the stabilizer ofhydrogen peroxide bleaching in economical aspectand has further the potential of market development。