天津工业大学学报2025，Vol.44Issue(5)：23-29,7.DOI:10.3969/j.issn.1671-024x.2025.05.004
冠醚聚酰胺膜的制备及其对电池浸取液的离子分离性能
Preparation of crown ether polyamide membranes and their performance for ion separation from battery leachate
摘要
Abstract
To separate Li+from spent battery leachate,crown ether polyamide membrane(CEPA-PES)was prepared using diaminodibenzo-14-crown-4(DAB14C4)as the interfacial polymerization monomer on polyethersulfone(PES),and used to separate Li+,Ni2+,Co2+and Mn2+in battery leachate.The chemical structure,elemental distribution and morphology of the membrane surface were characterized by ATR-FTIR,XPS and SEM.The results showed that the crown ether polyamide layer was successfully covered on the surface of the PES-based membrane,and the pure water flux was reduced from 229.0 L/(m2·h)to 9.5 L/(m2·h).The diffusion coefficients of divalent Ni2+,Co2+,and Mn2+in the leachate of waste batteries through CEPA-PES membranes reached 4.3×10-11,4.1×10-11 and 4.0×10-11 m2/s,respectively,while the diffusion coefficients of Li+was 0.2×10-11 m2/s.The separation fac-tors of CEPA-PES membrane for Ni2+/Li+,Co2+/Li+and Mn2+/Li+are 20.2,19.3 and 19.1,respectively.These re-sults indicated that the green and efficient separation of Li+from Ni2+,Co2+,Mn2+has been achieved through the complexation effect of DAB14C4 functionalized membrane on Li+.关键词
冠醚聚酰胺膜(CEPA-PES)/二氨基二苯并-14-冠-4/界面聚合/扩散系数/废旧锂电池浸取液/离子分离Key words
crown ether polyamide membrane(CEPA-PES)/diaminodibenzo-14-crown-4/interfacial polymerization/diffusion coefficients/used lithium battery leachate/ionic separation分类
化学工程引用本文复制引用
王明霞,郭宗华,刘澍阳,严峰..冠醚聚酰胺膜的制备及其对电池浸取液的离子分离性能[J].天津工业大学学报,2025,44(5):23-29,7.基金项目
国家自然科学基金项目(21808166) （21808166）
天津市自然科学基金项目(18JCYBJC89300) （18JCYBJC89300）
