Efficient magnetic capture of PE microplastic from water by PEG modified Fe3 O4 nanoparticles: Performance, kinetics, isotherms and influence factors

文献类型： 外文期刊

第一作者： Zhang, Yifan

作者： Zhang, Yifan;Feng, Yanfang;Xue, Lihong;He, Shiying;Zhang, Yifan;Duan, Jingjing;Liu, Ruiqian;Feng, Yanfang;Xue, Lihong;Yang, Linzhang;He, Shiying;Petropoulos, Evangelos;Petropoulos, Evangelos

作者机构：

关键词： Microplastic removal; Adsorption; Magnetic nanoparticles; Wastewater; Surface modification

期刊名称：JOURNAL OF ENVIRONMENTAL SCIENCES （ 影响因子：6.9； 五年影响因子：6.2 ）

ISSN： 1001-0742

年卷期： 2025 年 147 卷

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收录情况： SCI

摘要： Due to their resistance to degradation, wide distribution, easy diffusion and potential uptake by organisms, microplastics (MPs) pollution has become a major environmental concern. In this study, PEG -modified Fe3O4 magnetic nanoparticles demonstrated superior adsorption efficiency against polyethylene (PE) microspheres compared to other adsorbents (bare Fe3O4, PEI/Fe3O4 and CA/Fe3O4). The maximum adsorption capacity of PE was found to be 2203 mg/g by adsorption isotherm analysis. PEG/Fe3O4 maintained a high adsorption capacity even at low temperature (5 degrees C, 2163 mg/g), while neutral pH was favorable for MP adsorption. The presence of anions (Cl-, SO42-, HCO3 -, NO3 -) and of humic acids inhibited the adsorption of MPs. It is proposed that the adsorption process was mainly driven by intermolecular hydrogen bonding. Overall, the study demonstrated that PEG/Fe3O4 can potentially be used as an efficient control against MPs, thus improving the quality of the aquatic environment and of our water resources. (c) 2024 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

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