废旧棉花纤维改性水凝胶的合成及其对重金属离子的吸附研究  

Synthesis of improved waste cotton hydrolytic fiber doped hydrogel and application in heavy metal sewage treatment

作　　者：吕晓丹 潘凯波 侯雨 仉荣花 唐秀平 梁嘉韵 龚诗楚 杨柏 LYU Xiao-dan;PAN Kai-bo;HOU Yu;ZHANG Rong-hua;TANG Xiu-ping;LIANG Jia-yun;GONG Shi-chu;YANG Bai(School of Applied Chemistry and Materials,Zhuhai College of Science and Technology,Zhuhai 519041,China;State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China)

机构地区：[1]珠海科技学院应用化学与材料学院,广东珠海519041 [2]吉林大学化学学院,超分子结构与材料国家重点实验室,吉林长春130012

出　　处：《分子科学学报》2023年第5期431-438,共8页Journal of Molecular Science

基　　金：广东省教育厅“创新强校工程”科研项目(2021KQNCX145,2022KTSCX187,2022KTSCX186).

摘　　要：成功开发了一种用于废水处理的高吸附容量、高力学性能及可循环使用的重金属离子吸附复合凝胶,通过将旧棉花水解得到的纤维对聚丙烯酸-丙烯酰胺/聚乙烯醇复合凝胶进行掺杂改性,有效提高了材料的重金属离子吸附容量.该凝胶对污水中普遍存在的几种重金属离子(Cu^(2+),Cd^(2+),Ni^(2+)和Pb^(2+))具有优异的吸附和解吸附能力.本研究解决了凝胶因力学性能差而无法循环使用的问题,有望应用于工业废水中重金属离子的富集和移除.With the rapid development of modern economy,the issue of environmental protection has attracted wide attention.Especially,the environmental problems generated by heavy metal industrial waste water are becoming increasingly serious and have caused enormous safety hazards,environmental pressure and economic burdens.How to efficient dispose the sewage by low-cost approach has been a troublesome problem.Adsorption is one of the most classical methods for removing heavy metal ions with the advantages of simple equipment and high treatment efficiency,in which the selection and use of adsorption materials are the key factors affecting the adsorption performance.In this study,a waste cotton hydrolytic fiber doped poly(acrylamide-coacrylic acid)/PVA composite hydrogel with high heavy metal ion sorption and excellent mechanical performance has been successfully synthesized and used for sewage treatment.The heavy metal ions sorption capacity of composite hydrogel has improved due to the formation of micropores structure caused by introduction of cotton fiber.The composite hydrogel shows outstanding sorption and desorption efficiency for heavy metal ions(Cu^(2+),Cd^(2+),Ni ^(2+)and Pb^(2+))which are commonly present in electroplating sewage.This method solved the problem that the hydrogel can not be cyclic utilized,and the obtained materials is expected to be applied the treatment of heavy metal sewage.

关 键 词：废旧棉花 改性 复合水凝胶 重金属离子废水 吸附和解吸 

分 类 号：O630[理学—高分子化学]