新闻纸酶法脱墨试验研究

目的研究生物酶对新闻纸的脱墨效果,提高废纸再生质量。方法采用纤维素酶、半纤维素酶、脂肪酶等3种生物酶制剂对废旧新闻纸进行脱墨对比试验,建立了较为完整的新闻纸生物酶脱墨流程,制备了脱墨试样。以白度和油墨残余面积百分比为评价参数,对试样脱墨质量进行了评价。研究了单组份和多组分复配条件下不同种类酶试剂对新闻纸脱墨质量的影响。结果在单组份脱墨试验中,脂肪酶脱墨效果最好,脱墨试样白度达到55.33%,油墨残余量为2.11%;在复配脱墨试验中,维素酶与脂肪酶的混合酶液能够体现一定的协同作用,处理效果最好,脱墨试样白度值达到55.69%,油墨残余量为1.85%。结论 3种酶制剂均能起到脱墨作用,复配时脱墨效果有一定的增强。

Enzymatic Deinking Technology of Waste Newsprint Paper

Objective The deinking experiments of waste newsprint with biological enzymes were conducted to evaluate the effects of enzymes deinking and to improve the regeneration quality of waste paper. Methods A newsprint enzyme deinking process was established and the deinking samples were prepared. The quality of the deinking process was evaluated by whiteness and residual ink area percentage. The effects of different enzymes on the deinking quality of newsprint were investigated with one-component and two-component enzyme preparations. Results The results showed that the best one-component enzyme preparation for deinking was lipase, with a whiteness of 55.33% and a residual ink area percentage of 2.11%; results of the two-component enzyme preparations showed that the cellulase and lipase mixture had the best performance with a whiteness of 55.69% and a residual ink area percentage of 1.85%. Conclusion The three enzymes could all remove ink from waste newsprint and the deinking effects were enhanced when mixed.