Improvements in ECF bleaching: Use of activated oxygen species and xylanase

被引：0

作者：

Hamilton, J

Senior, DJ

Rodriguez, A

Santiago, D

Szwec, J

Ragauskas, AJ

机构：

[1] CLARK ATLANTA UNIV,ATLANTA,GA 30314

[2] INST PAPER SCI & TECHNOL,ATLANTA,GA 30318

来源：

TAPPI JOURNAL | 1996年 / 79卷 / 04期

关键词：

alkaline pulps; bleaching; chemical pulps; chemical treatment; chlorine dioxide; chlorine free bleaching; enzymes; hardwood pulps; hydrogen peroxide; kraft pulps; multistage process; oxides; peroxides; pretreatment; processes; proteins; pulps; softwood pulps; xylanase;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Softwood and hardwood kraft pulps were pretreated with xylanase followed by treatment with hydrogen peroxide, dimethyidioxirane (DMD), or hydrogen peroxide reinforced with nitralamine (Pnt). The resulting pulps were then further bleached with a DEDED sequence. Bleaching studies demonstrated that activated peroxide in the form of DMD or Pnt was an effective method of reducing the total applied charge of chlorine dioxide while still achieving 90+ ISO brightness values. Application: This paper gives preliminary results on studies of enzymes and peroxide agents as alternative ECF bleaching protocols to further reduce AOX.

引用

页码：231 / 234

页数：4

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