Glutaraldehyde cross-linked CDA/HBP-NH2 nanofiber membrane for adsorption of heavy metal ions in wastewater

Zang Chuanfeng; Han Xiangye; Dong Erying; Shen Feiyu; Yan Tingting; Wang Runyue; Zhang GuangyuYu

doi:10.1039/d1ra06156a

Glutaraldehyde cross-linked CDA/HBP-NH₂ nanofiber membrane for adsorption of heavy metal ions in wastewater

RSC Adv. 2021 Dec 6;11(62):38982-38989. doi: 10.1039/d1ra06156a.

Authors

Zang Chuanfeng¹, Han Xiangye¹, Dong Erying², Shen Feiyu¹, Yan Tingting¹, Wang Runyue¹, Zhang GuangyuYu¹

Affiliations

¹ National & Local Joint Engineering Research Center of Technical Fiber Composites for Safety and Protection, Nantong University Nantong Jiangsu 226019 P. R. China ytt@ntue.du.cn zgyu85@ntu.edu.cn.
² Zhejiang Kingsafe Nonwoven Fabric Group Co., Ltd Huzhou Zhejiang 313100 China.

Abstract

A new type of nanofiber membrane was prepared by mixed electrospinning of cellulose diacetate and amino-terminated hyperbranched polymer (HBP-NH₂), and glutaraldehyde (GA) crosslinking was used to improve its water resistance and shape retention. pH, adsorption time, and initial solution concentration on Cu(ii) and Cr(vi) ions were studied. Results showed that the prepared GA-CDA/HBP-NH₂ nanofiber had good spinning uniformity, hydrophilicity, and adsorption effect on Cu(ii) and Cr(vi) ions compared with the pure CDA nanofiber. The maximum adsorption capacity of GA-CDA/HBP-NH₂ for Cu(ii) and Cr(vi) was 50.2 and 176.6 mg g^-1, respectively.