Fabrication of magnetically responsive anti-fouling and easy-cleaning nanofiber membrane and its application for efficient oil-water emulsion separation  

作　　者：Yajie Wang Zhiwei Guo Yujie Yang Yanxiang Li Qingchun Guo Peilin Cui Wangliang Li 

机构地区：[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

出　　处：《Chinese Journal of Chemical Engineering》2022年第1期286-293,共8页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Founda-tion of China(22078347);National Natural Science Foundation of China(21961160745);Key Research and Development Program of Hebei Province,China(20374001D,21373303D);Science and Technology Program of Guanshanhu([2020]13);Program of Inno-vation Academy for Green Manufacture,CAS(IAGM2020C04).

摘　　要：The magnetically responsive anti-fouling nanofiber membrane(MRANM)was fabricated for efficient oilwater emulsion separation,which could be cleaned using oscillating magnetic field.MRANM was prepared by grafting superparamagnetic Fe_(3)O_(4) nanoparticles onto the surface of electrospun polyacrylonitrile 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 regenerability 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 viscosity oil-water emulsion.

关 键 词：SUPERPARAMAGNETIC Nanofiber membrane ANTI-FOULING Oil-water emulsion REGENERATION 

分 类 号：X703[环境科学与工程—环境工程] TQ340.64[化学工程—化纤工业] TQ051.893