摘要
用木聚糖酶对杨木硫酸盐浆进行预处理,以提高和改进其CEH三段漂白性能,优化并制定出木聚糖酶AU-3的预处理条件。木聚糖酶AU-3的最佳处理pH值为8,最佳处理温度为70℃,用量10IU·g-1绝干浆,此时纸浆的白度提高2%ISO。用木聚糖酶进行生物漂白,能有效降低漂白时有效氯用量,减轻对环境的污染。
This research used poplar sulfate pulp as material to improve traditional three stages bleaching by using xylanase and exploit a new pulping method fitted to poplar sulfate pulp. We did this in order to find in what pretreatment condition it could be best. The xylanase AU-3＇s best pH is 8 in the condition of 70℃ and 10 IU·g^-1 pulp. In this case its whiteness could increase 2%ISO than blank pulp not pretreated by xylanase. The biological bleaching with the xylanase could reduce the amount of effectively chlorine we used, and also be good to the environment.
出处
《纸和造纸》
北大核心
2009年第5期51-53,共3页
Paper and Paper Making
