Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 254, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2020.117517
Keywords
Vein-supported porous membrane; Oil water separation; Polyacrylonitrile; Superhydrophilicity; Anti-oil-fouling
Categories
Funding
- National Natural Science Foundation of China [21875048]
- China Postdoctoral Science Foundation [2020M672571]
- Outstanding Youth Project of Guangdong Natural Science Foundation [2020B151502071]
- Guangdong Natural Science Foundation [2019A1515011358]
- Major Scientific Project of Guangdong University [2017KZDXM059]
- Yangcheng Scholars Research Project of Guangzhou [201831820]
- Science and Technology Research Project of Guangzhou [202002010007, 202002030430, 202002030257]
- Nansha Science and Technology Program [2017CX012]
- Science and Technology Service Network Initiative [KFJ-STS-QYZX-043]
- Open Fund of Guangdong Provincial Key Laboratory of Petrochemical Pollution Process and Control, Guangdong University of Petrochemical Technology [2018B030322017]
Ask authors/readers for more resources
The study introduces a novel vein-supported porous membrane (VPM) fabricated by casting polyacrylonitrile on veins through non-solvent induced phase separation, demonstrating superior superhydrophilicity and oil-water separation performance. The VPM shows reduced oil adhesion and increased permeation flux, offering a promising approach for the design and fabrication of novel oil-water separation membranes using biomaterials.
Oil fouling is a major obstacle for the efficient and reliable oil-water separation of mesh-based membrane processes. Innovations in membrane materials and preparation processes are therefore needed to develop anti-oil-adhesion strategies. This study reports a series of vein-supported porous membranes (VPMs) fabricated by casting polyacrylonitrile (PAN) on veins through non-solvent induced phase separation, confirmed by FTIR, SEM and XRD characterizations, and applied as an effective oil-water separation membrane. Benefiting from the combination of tubular-like vein and hydrophilic PAN, the resultant VPM demonstrates a fine-tunable morphology and superhydrophilicity, extremely boosting underwater superoleophobicty, mechanical strength and superior performance for oil/water separation to various oily mixtures/emulsions, showing underwater oil contact angles over 157 degrees and nearly zero underwater oil adhesion. In oil-water mixture separation process, a separation efficiency of > 99% and ultrahigh permeation flux of 9592 LMH can be achieved under gravity conditions using VPM-2 (casting with 2 wt% PAN). For oil-water emulsion separation, a highest flux of 3011 LMH and trace oil concentration< 10 ppm in the filtrate was generated using VPM-9 (casting with 9 wt% PAN) under a low external pressure of 3 kPa. The VPM-2 membrane is further carried out a 40-h cycling separation, showing a constantly stable water flux of similar to 6000 LMH. The developed VPMs open a bright path to use biomaterials for design and fabrication of novel oil-water separation membrane.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available