Fabrication of magnetically responsive anti-fouling and easy-cleaning nanofiber membrane and its application for efficient oil-water emulsion separation |
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Authors: | Yajie Wang Zhiwei Guo Yujie Yang Yanxiang Li Qingchun Guo Peilin Cui Wangliang Li |
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Affiliation: | 1.CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2.University of Chinese Academy of Sciences, Beijing 100049, China;3.Hebei Lansheng Biotech Co., Ltd, Shijiazhuang 052200, China;4.International Medical Service, Beijing Tiantan Hospital Affiliated to Capital Medical University, China |
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Abstract: | The magnetically responsive anti-fouling nanofiber membrane (MRANM) was fabricated for efficient oil-water emulsion separation,which could be cleaned using oscillating magnetic field.MRANM was pre-pared by grafting superparamagnetic Fe3O4 nanoparticles onto the surface of electrospun polyacryloni-trile nanofiber membrane (PANM).Compared with PANM,the water contact angle of MRANM decreased from 104° to 0°,indicating that the hydrophilicity of the membrane was significantly improved.For the emulsions of hexadecane,octane and rapeseed oil,the separation efficiency was 98.04%,96.59% and 92.67%,respectively.After the treatments in oscillating magnetic field,the separation efficiency kept above 95% after 8 times recycling,which indicated that the MRANM had good regenera-bility and reusability.The as-fabricated membrane with magnetic responsiveness facilitated an effective method for solving the membrane fouling problem during practical applications of separation high vis-cosity oil-water emulsion. |
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Keywords: | Superparamagnetic Nanofiber membrane Anti-fouling Oil-water emulsion Regeneration |
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