化工学报2017，Vol.68Issue(12)：4750-4755,6.DOI:10.11949/j.issn.0438-1157.20170775
角质酶/表面活性剂体系对混合办公废纸的协同脱墨作用
Deinking of mixed office waste paper by cutinase/surfactant system
摘要
Abstract
Cutinase is capable of hydrolyzing soluble esters, insoluble triglycerides and various polyesters, and thus it can hydrolyze the binder in the ink and have the potential to replace lipase in the field of waste paper deinking. Cutinase and self-made surfactant was synergically used in deinking of office waste paper. The deinking effect and optimum process were discussed and compared with the conventional commercial lipase. The results showed that the optimal effect of cutinase could be achieved under the conditions of enzyme dosage of 10 U·g-1, enzyme treatment time of 30 min, enzyme treatment temperature of 50℃ and surfactant dosage of 0.2％. Compared with lipase/surfactant and surfactant deinking, the brightness and ink removal rate of paper after cutinase deinking were higher and the mechanical strength of paper was also greatly improved. By comparison of the paper performance and scanning electron microscopy (SEM) analysis, the deinking effect of cutinase was better than that of lipase.关键词
角质酶/表面活性剂/混合办公废纸/浮选脱墨Key words
cutinase/surfactant/mixed office waste paper/flotation deinking分类
轻工纺织引用本文复制引用
王凤,龙柱,吴美燕,陈杰,张辉..角质酶/表面活性剂体系对混合办公废纸的协同脱墨作用[J].化工学报,2017,68(12):4750-4755,6.基金项目
国家自然科学基金项目(31270633) （31270633）
江苏省制浆造纸科学与技术重点实验室开放课题项目(201532). supported by the National Natural Science Foundation of China(31270633). （201532）
