ELEMENTAL CHLORINE FREE BLEACHING OF WHEAT STRAW CHEMIMECHANICAL PULP

被引：0

作者：

Latibari, Ahmad Jahan ^{[1
]}

Hossein, Mohammad Ali ^{[1
]}

Hosseinpour, Reza ^{[2
]}

Tajdini, Ajang ^{[1
]}

机构：

[1] Islamic Azad Univ, Dept Wood & Paper Sci & Technol, Karadj Branch, Karaj, Iran

[2] Islamic Azad Univ, Dept Wood & Paper Sci & Technol, Sci & Res Branch, Tehran, Iran

来源：

CELLULOSE CHEMISTRY AND TECHNOLOGY | 2014年 / 48卷 / 1-2期

关键词：

wheat straw; CMP; yield; strength; totally chlorine free; elemental chlorine free; ARUNDO-DONAX L; SODA-ANTHRAQUINONE; 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：

Production of bleachable CMP pulp from wheat straw using different dosages of NaOH and chemical treatment time was investigated. The yield after chemical treatment varied between 64.6 and 72.7% and the total yield after defiberizing was measured between 53.4% and 62%. The pulp produced applying 10% NaOH, 40 minutes pulping time and 95 degrees C pulping temperature was selected for bleaching trials. Elemental Chlorine Free (ECF) bleaching sequence was used for bleaching the selected pulp. Applying 3% (based on oven dry weight of the unbleached pulp) chlorine dioxide in D0EPD1 bleaching sequence (2% in D-0 stage and 1% in D-1 stage) improved the brightness to 62.2% ISO. The kappa number of the ECF bleached pulp was reduced from the value of 40.1 to the final value of 13.4 for bleached pulp.

引用

页码：119 / 125

页数：7

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