The use of bentonites in newspaper recycling. Part 2: influence on wash deinked and post-bleached pulp optical properties

被引：0

作者：

Philippakopoulou, T ^{[1
]}

Simonetis, S ^{[1
]}

Economides, D ^{[1
]}

机构：

[1] Natl Tech Univ Athens, Dept Chem Engn, Div 4, Lab Organ Chem Technol, GR-15773 Athens, Greece

来源：

APPITA JOURNAL | 2003年 / 56卷 / 04期

关键词：

bentonite; recycling; newspaper; wastepaper; deinking; washing; bleaching; optical properties;

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：

When bentonite was added to a newspaper furnish during wash deinking the ash content and apparent yield of the deinked pulp increased, probably due to bentonite retention on the pulp fibres. The optical properties of the deinked pulp deteriorated. An alkaline-activated and an organophilic bentonite at 1% addition level achieved speck elimination with minimal deterioration of the deinked pulp optical properties. Simultaneously, the effectiveness of post-bleaching was increased, as the pulp produced was brighter and more effective peroxide utilisation was achieved.

引用

页码：284 / 289

页数：6