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Study on the adsorption performance of PAN/PEI nanofiber membranes for aqueous PFOA
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Kun-zhen HE1, 2, Yan LIU1, 2, Xing XING2, Jing-yuan LI2, Jing WANG2, *
China Environmental Science | 2026, 46(2) : 809 - 820
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China Environmental Science | 2026, 46(2): 809-820
• Water Pollution Control •
Study on the adsorption performance of PAN/PEI nanofiber membranes for aqueous PFOA
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Kun-zhen HE1, 2, Yan LIU1, 2, Xing XING2, Jing-yuan LI2, Jing WANG2, *
Affiliations
  • 1.College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
  • 2.Henan Academy of Sciences, Zhengzhou 450003, China
Published: 2026-02-20
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Polyacrylonitrile (PAN)/polyethyleneimine (PEI) composite nanofiber membranes fabricated via electrospinning were systematically investigated for their adsorption performance and mechanisms toward perfluorooctanoic acid (PFOA). Results showed that when PEI content was 3%, the material achieved the highest saturated adsorption capacity of 1145.55mg/g for PFOA, significantly exceeding samples with lower PEI contents. The adsorption process adhered to the Langmuir monolayer adsorption model, with optimal efficiency observed under acidic conditions (pH = 3), primarily relying on electrostatic interactions between protonated PEI amines and PFOA. Coexisting humic acid (HA) and ions (e.g., Ca2+, Mg2+, Fe3+, HCO3-, SO42-) exhibited inhibitory effects, while elevated PEI content enhanced the materials' resistance to interference. Using 0.3mol/L NaCl in 90% methanol as the desorbent, the material retained 88.32% adsorption efficiency after five adsorption-desorption cycles, demonstrating excellent recyclability. Combined analyses of material characterization and adsorption performance indicated that the primary mechanisms were electrostatic interactions, supplemented by hydrophobic interaction.

PFOA  /  nanofiber membranes  /  polyacrylonitrile  /  polyethyleneimine  /  adsorption
贺坤振, 刘琰, 邢兴, 李箐湲, 王静. PAN/PEI纳米纤维膜吸附水中PFOA性能研究. 中国环境科学, 2026 , 46 (2) : 809 -820 .
Kun-zhen HE, Yan LIU, Xing XING, Jing-yuan LI, Jing WANG. Study on the adsorption performance of PAN/PEI nanofiber membranes for aqueous PFOA[J]. China Environmental Science, 2026 , 46 (2) : 809 -820 .
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Year 2026 volume 46 Issue 2
77
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  • Receive Date：2025-07-09
  • Online Date：2026-10-08
  • Published：2026-02-20
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  • Received：2025-07-09
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Affiliations
    1.College of Chemistry and Molecular Sciences, Henan University, Kaifeng 475004, China
    2.Henan Academy of Sciences, Zhengzhou 450003, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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