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林产化学与工业

林产化学与工业 ›› 2003, Vol. 23 ›› Issue (3): 19-22.

• 研究报告 • 上一篇    下一篇

纤维素酶与木聚糖酶混合用于脱墨的研究

顾琪萍, 勇强, 叶汉玲, 尤纪雪   

  1. 南京林业大学 化学工程学院, 江苏 南京 210037
  • 收稿日期:2002-12-15 修回日期:1900-01-01 出版日期:2003-09-30 发布日期:2003-09-30

STUDY ON DEINKING OF THE USED NEWSPRINT WITH BLENDED CELLULASE/XYLANASE

GU Qi-ping, YONG Qiang, YE Han-ling, YOU Ji-xue   

  1. College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
  • Received:2002-12-15 Revised:1900-01-01 Online:2003-09-30 Published:2003-09-30

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摘要： 将纤维素酶和木聚糖酶混合用于废新闻纸的脱墨,研究了2种酶的最佳混合比例,并将酶脱墨与化学脱墨进行了脱墨性能和漂白性能的比较。结果表明混合酶的最佳比例为50/50,此时脱墨浆的白度和残留油墨量分别比对照浆高出3.2个百分点和降低73.8%,比木聚糖酶脱墨浆高出0.4个百分点和降低8.6%;裂断长、耐破指数和撕裂指数比纤维素酶脱墨浆分别高出3.8%、5.9%和8.6%;单种酶的用量也各自节省了一半。酶脱墨与化学脱墨相比,有着较高的得率和较低的返黄值。

关键词: 纤维素酶, 木聚糖酶, 混合酶, 脱墨, 废新闻纸

Abstract: Cellulase blended with xylanase at certain ratio was used for deinking of the used newsprint to obtain their optimal ratio and compared with chemical deinking.Results showed 50/50 was the optimum ratio, under which the brightness of deinked pulp is 3.2 percentages higher and ink removal rate is 73.8% lower respectively than the contrast, and 0.4 percentages higher and 8.6% lower respectively than the xylanase deinked pulp.Breaking length, bursting index and tearing index were 3.8%, 5.9% and 8.6% higher than those of cellulase deinked pulp respectively.Enzyme dosages were saved 50% for cellulase and xylanase both, too.Compared with chemical deinked pulp, enzymatic deinked pulp had higher yield and lower postcolor number.

Key words: cellulase, xylanase, C/X blended, deinking, used newsprint

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