废旧动力电池制备FeAl-LDHs及其对 Cr(Ⅵ)吸附性能的应用  

Preparation of FeAl-LDHs from Waste Power Batteries and ItsApplication in Cr (VI ) Adsorption Performance

作　　者：顾菲 潘君丽 张琳娜 刘维桥[1] 沈大森 林爱琴 GU Fei;PAN Junli;ZHANG Linna;LIU Weiqiao;SHEN Dasen;LIN Aiqin(School of Resources and Environment,Jiangsu University of Technology,Jiangsu Changzhou 321001;Sanmen Second Senior High School,Sanmen County,Zhejiang Taizhou 317102,China)

机构地区：[1]江苏理工学院资源与环境学院,江苏常州321001 [2]浙江省三门县三门第二高级中学,浙江台州317102

出　　处：《广州化工》2025年第5期65-70,共6页GuangZhou Chemical Industry

基　　金：常州市科学技术局项目(CM20223017)。

摘　　要：本研究利用废旧磷酸铁锂动力电池正极片的浸出液作为原料,探讨了在不同反应时间、温度、pH值和原料比例下制备的FeAl-LDHs对Cr(Ⅵ)的吸附性能的影响。实验条件优化结果显示,反应时间24 h、温度120℃、pH值9以及Fe/Al比例1∶2是最佳的合成条件,此时FeAl-LDHs对50 mg/L Cr(Ⅵ)溶液的吸附率可高达99.96%。等温吸附模型分析揭示吸附过程更符合Freundlich模型,暗示发生了多层吸附行为。本研究为开发高效的Cr(Ⅵ)吸附材料提供了重要的理论依据和实验基础。The leaching solution of waste lithium iron phosphate power battery cathode plates was used as raw materials to explore the effects of FeAl-LDHs prepared at different reaction times,temperatures,pH values and raw material ratios on the adsorption performance of Cr(VI).The optimized experimental conditions showed that the optimal synthesis conditions were as follows:reaction time was 24 h,temperature was 120℃,pH value was 9,and Fe/Al ratio was 1∶2.The adsorption rate of FeAl-LDHs on 50 mg/L Cr(VI)solution could reach 99.96%.The analysis of the isothermal adsorption model revealed that the adsorption process was more in line with the Freundlich model,suggesting the occurrence of multi-layer adsorption behavior.This study provided important theoretical and experimental basis for the development of efficient Cr(VI)adsorption materials.

关 键 词：FeAl-LDHs 吸附 层状双氢氧化物 铬吸附 

分 类 号：O611.4[理学—无机化学]