Efficient magnetic capture of PE microplastic from water by PEG modified Fe3O4 nanoparticles:Performance,kinetics,isotherms and influence factors

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外文摘要：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℃,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 hy-drogen 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.

外文关键词：

Microplastic removalAdsorptionMagnetic nanoparticlesWastewaterSurface modification

作者：

Yifan Zhang、Jingjing Duan、Ruiqian Liu、Evangelos Petropoulos、Yanfang Feng、Lihong Xue、Linzhang Yang、Shiying He

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作者单位：

College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China

Key Laboratory of Agro-Environment in Downstream of Yangze Plain,Ministry of Agriculture and Rural Affairs,Institute of Agricultural Resources and Environment,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China

School of Engineering,Newcastle University,Newcastle upon Tyne NE1 7RU,UK

Stantec UK,Newcastle upon Tyne NE1 3DY,UK

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出版年：

2025

DOI：

10.1016/j.jes.2023.07.025

环境科学学报(英文版)

中科院生态环境研究中心

环境科学学报(英文版)

影响因子：0.862

ISSN：1001-0742

年,卷(期)：2025.147(1)