氨基化纤维素的制备及对丝绸印染废水的净化处理  

Preparation of aminated cellulose and its application in purifying silk printing and dyeing wastewater

作　　者：陈冬芝[1] 龚文丽 杨晓刚[1] 张勇[1] CHEN Dongzhi;GONG Wenli;YANG Xiaogang;ZHANG Yong(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou 310018,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院)

出　　处：《丝绸》2020年第1期26-30,共5页Journal of Silk

基　　金：国家自然科学基金面上项目(51672251)

摘　　要：文章以纤维素(CE)为原料,通过戊二醛交联接枝聚乙烯亚胺(PEI),制备氨基化纤维素(CE-g-PEI),并将制备的CE-g-PEI应用于丝绸印染废水的净化处理。通过正交实验,确定其最优制备工艺条件为CE/PEI质量比1︰1,反应温度45℃,戊二醛用量1.5 g,反应3 h。此时,CE-g-PEI表面氨基含量高达17.5 mmol/g。对丝绸印染废水处理结果表明:CE-g-PEI对废水的处理效果依赖于其用量,当在100 mL废水中添加60 mg的CE-g-PEI时,废水中COD去除效率达到86.7%,其浊度也由初始的7 NTU降至3 NTU左右。所以,氨基化纤维素对丝绸印染废水具有优良的净化效果,是一种有潜力的废水处理新材料。Aminated cellulose(CE-g-PEI)was prepared by using cellulose(CE)as the raw material and crosslinking polyethyleneimine(PEI)with glutaraldehyde.Meanwhile,the prepared CE-g-PEI was applied to purify silk printing and dyeing wastewater.The optimal preparation conditions were determined by the orthogonal experiment,i.e.CE/PEI mass ratio 1︰1,reaction temperature 45℃,glutaraldehyde dosage 1.5 g,and reaction time 3 h.Under such conditions,the amino content of prepared CE-g-PEI reached up to 17.5 mmol/g.The treatment results of silk printing and dyeing wastewater indicate that the treatment effect of CE-g-PEI on the wastewater depends on its dosage.When 60 mg of CE-g-PEI was added into 100 mL wastewater,the removal efficiency of COD in the wastewater reached up to 86.7%.The turbidity also decreased from 7 NTU to about 3 NTU.All the results show that the CE-g-PEI has a great purification effect on the silk printing and dyeing wastewater,so it is a potential new material to treat wastewater.

关 键 词：纤维素 聚乙烯亚胺 氨基化改性 丝绸印染废水 化学需氧量 

分 类 号：TQ352.78[化学工程] TS149[轻工技术与工程—纺织材料与纺织品设计]