光催化漂白高得率浆  

Bleaching of High Yield Pulp by Photocatalysis Method

作　　者：王海亮 张玉凤 

机构地区：[1]泰格林纸集团岳阳纸业股份有限公司,湖南岳阳414002

出　　处：《纸和造纸》2008年第6期27-29,共3页Paper and Paper Making

摘　　要：采用自行设计的光催化漂白反应器,以国际通用的商品P-25型TiO2为光催化剂,在紫外光照射下,对马尾松高得率浆光催化漂白过程的部分影响因素进行了研究。以纸浆白度ISO为评价指标,系统考察了光照时间、催化剂用量、初始pH值等指标的影响。结果表明:随着光催化漂白时间的增加,漂后浆的白度上升;适当的酸性环境可以促进反应顺利进行获得高白度的纸浆;当光催化剂用量为1.0g·L-1、初始pH=4.0、紫外光照射条件下,光催化漂白6h后漂后浆白度比未漂浆白度可提高70%。Using commercial P-25 type TiO2 as a photocatalyst, high yield pulp was photocatalytic treated with TiO2 photocatalysis method. The influence of treatment parameters including reaction time, TiO2 dosage and aqueous pH on the pulp brightness （ISO）were systematically investigated. The results showed that, the acidic medium was capable of accelerating the photocatalytic reaction and pulp brightness was strikingly improved, pulp brightness （ISO） increased by 70% when TiO2 dosage, aqueous pH and reaction time were 1.0 g.L^-1, 4.0 and 6 h, respectively.

关 键 词：光催化 TIO2 高得率浆 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]