Статья

Surface Modification of Graphene Oxide for Fast Removal of Per- and Polyfluoroalkyl Substances (PFAS) Mixtures from River Water

Md. Nahid PervezDepartment of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesTao JiangDepartment of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesJaydev Kumar MahatoDepartment of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesIlango Aswin KumarDepartment of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesYamini KumaranDepartment of Nanoscale Science and Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesYuwei ZuoDepartment of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesWeilan ZhangDepartment of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesHaralabos EfstathiadisDepartment of Nanoscale Science and Engineering, University at Albany, State University of New York, Albany, New York 12222, United StatesJeremy I. FeldblyumDepartment of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United StatesMehmet V. YigitDepartment of Chemistry, University at Albany, State University of New York, Albany, New York 12222, United StatesYanna LiangDepartment of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United States

2024en

ABI

Аннотация

Per- and polyfluoroalkyl substances (PFAS) make up a diverse group of industrially derived organic chemicals that are of significant concern due to their detrimental effects on human health and ecosystems. Although other technologies are available for removing PFAS, adsorption remains a viable and effective method. Accordingly, the current study reported a novel type of graphene oxide (GO)-based adsorbent and tested their removal performance toward removing PFAS from water. Among the eight adsorbents tested, GO modified by a cationic surfactant, cetyltrimethylammonium chloride (CTAC), GO-CTAC was found to be the best, showing an almost 100% removal for all 11 PFAS tested. The adsorption kinetics were best described by the pseudo-second-order model, indicating rapid adsorption. The isotherm data were well supported by the Toth model, suggesting that PFAS adsorption onto GO-CTAC involved complex interactions. Detailed characterization using scanning electron microscopy-energy dispersive X-ray spectroscopy, Fourier transform infrared, thermogravimetric analysis, X-ray diffraction, and X-ray photoelectron spectroscopy confirmed the proposed adsorption mechanisms, including electrostatic and hydrophobic interactions. Interestingly, the performance of GO-CTAC was not influenced by the solution pH, ionic strength, or natural organic matter. Furthermore, the removal efficiency of PFAS at almost 100% in river water demonstrated that GO-CTAC could be a suitable adsorbent for capturing PFAS in real surface water.

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Идентификаторы

DOI: 10.1021/acsestwater.4c00187

Цитирования и источники

Цитирований: 2Использованных источников: 0

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