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J. Hefei Univ. Tech. (Nat. Sci.)

合肥工业大学学报(自然科学版)

JOURNAL OF HEFEI UNIVERSITY OF TECHNOLOGY (NATURAL SCIENCE)

Competent Authorities: Ministry of Education of the People's Republic of China

Sponsor by: Hefei University of Technology

ISSN 1000-1646, CN 34-1001/N

Adsorption of $ Cu^{2+} $ in aqueous solution by HPAMAM@PLA composite fiber membrane

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HPAMAM@PLA 复合纤维膜对水溶液中 $ Cu^{2+} $ 的吸附

Journal Information

J. Hefei Univ. Tech. (Nat. Sci.), Aug.2025, Vol.48 No.8: 1066-1071

DOI: 10.3969/j.issn.1003-5060.2025.08.009

Authors

HU Jintao, YANG Wen, LU Yusheng, LI Yuqing

(School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China)

Abstract and Keywords

Abstract: Polylactic acid (PLA) electrospinning fiber membrane was prepared via electrospinning, and then the hyperbranched poly(amido-amine)(HPAMAM) was used to modify PLA electrospinning fiber membrane by soaking and cross-linking to prepare HPAMAM@PLA composite fiber membrane. The structure of HPAMAM@PLA composite fiber membrane and the adsorption process of $ Cu^{2+} $ in aqueous solution were studied. The results show that the composite fiber membrane can effectively remove $ Cu^{2+} $ in aqueous solution. The suitable pH value for $ Cu^{2+} $ adsorption is 6. The adsorption process is in accordance with the pseudo-second-order kinetic model. The isothermal adsorption experiments indicate that Langmuir isothermal adsorption model is more suitable in describing the adsorption behavior. With the increase of temperature and initial $ Cu^{2+} $ concentration in aqueous solution, the adsorption capacity of the composite fiber membrane also increases. The theoretical maximum saturated adsorption capacity can reach 70.57 mg/g.

Keywords: polylactic acid (PLA); hyperbranched poly(amido-amine) (HPAMAM); membrane modification; copper; adsorption

作者信息

胡锦涛，杨文，陆宇升，李雨晴

（合肥工业大学化学与化工学院，安徽合肥230009）

摘要和关键词

摘要: 文章通过静电纺丝技术制备聚乳酸(PLA)电纺纤维膜, 再利用浸泡-交联方法将合成的超支化聚酰胺-胺(HPAMAM)与PLA电纺纤维膜结合制备HPAMAM@PLA复合纤维膜, 并对HPAMAM@PLA复合纤维膜的结构和对水溶液中 $ Cu^{2+} $的吸附过程进行研究。吸附结果表明: 复合纤维膜可有效去除水溶液中的 $ Cu^{2+} $; 复合纤维膜的最佳吸附pH值为6; 其吸附过程符合准二级动力学模型, 等温吸附模型符合Langmuir等温吸附模型, 随着温度和水溶液中初始 $ Cu^{2+} $质量浓度增加膜的吸附量也随之增加, 理论最大饱和吸附量可达到70.57mg/g。

关键词: 聚乳酸（PLA）；超支化聚酰胺-胺（HPAMAM）；膜改性；铜；吸附

Funding

安徽省自然科学基金资助项目（2208085ME117）

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