激光打印废纸脂肪酶脱墨的工艺条件  

Technological Conditions of Enzymatic Deinking of Laser-Print Wastepaper with Lipase

作　　者：杨丽品[1] 高玉杰[1] 卢振华[1] 

机构地区：[1]天津市制浆造纸重点实验室天津科技大学材料科学与化学工程学院,天津300457

出　　处：《天津科技大学学报》2010年第2期45-48,共4页Journal of Tianjin University of Science & Technology

摘　　要：研究脂肪酶对激光打印废纸的脱墨作用,优化脂肪酶脱墨的工艺条件,并与中性脱墨与碱法脱墨进行比较.结果表明,激光打印废纸的脂肪酶脱墨优于中性脱墨与碱法脱墨.脂肪酶脱墨的最佳工艺条件是:碎浆浓度10%～12%,碎浆温度55,℃,碎浆时间40,min,酶用量0.03%,浮选时间8,min.在适宜的脱墨条件下可使脱墨浆ISO白度达到93.42%,残余油墨面积为0.01%.Lipase deinking of Laser-print wastepaper was investigated in this study. Then deinking process of Laser-print wastepaper with lipase was optimized and deinking efficiency between lipase deinking,neutral deinking and alkaline deinking was compared. Results show that Laser-print wastepaper with lipase deinking is better than that with neutral deinking and alkaline deinking. The optimized deinking conditions are ：pulping consistency 10% - 12%,pulping temperature 55 ℃ ,pulping time 40 min ,enzyme dosage opposite in dry pulp 0.03%,floating time 8 min. By using the optimized conditions,the deinking pulp brightness can reach 93.42%ISO,the residual ink area is 0.01%.

关 键 词：激光打印废纸 酶脱墨 脂肪酶 

分 类 号：TS724[轻工技术与工程—制浆造纸工程]