Poly(ethylene-co-vinyl alcohol) Electrospun Nanofiber Membranes for Gravity-Driven Oil/Water Separation

Fabrication of highly efficient oil/water separation membranes is attractive and challenging work for the actual application of the membranes in the treatment of oily wastewater and cleaning up oil spills/oil leakage accidents. In this study, hydrophilic poly(ethylene-co-polyvinyl alcohol) (EVOH) na...

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Bibliographic Details
Published in:Membranes (Basel) 2022-03, Vol.12 (4), p.382
Main Authors: Shah, Aatif Ali, Yoo, Youngmin, Park, Ahrumi, Cho, Young Hoon, Park, You-In, Park, Hosik
Format: Article
Language:English
Subjects:
Cellulose acetate
Contact angle
Efficiency
Electrospinning
Emulsions
Energy consumption
Ethylene
Fabrication
Graphene
Gravity
Hydrocarbons
Hydrophilicity
Mechanical properties
membrane
Membrane separation
Membranes
nanofiber
Nanofibers
Nanomaterials
Nanoparticles
Oil spills
oil/water separation
Performance tests
Poly(ethylene-co-vinyl alcohol)
Polymers
Polyvinyl alcohol
Pore size
Porosity
Porous materials
Separation
Surfactants
Textiles
Wastewater treatment
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Summary:Fabrication of highly efficient oil/water separation membranes is attractive and challenging work for the actual application of the membranes in the treatment of oily wastewater and cleaning up oil spills/oil leakage accidents. In this study, hydrophilic poly(ethylene-co-polyvinyl alcohol) (EVOH) nanofiber membranes were made using an electrospinning technique for oil/water separation. The as-prepared EVOH electrospun nanofiber membranes (ENMs) exhibited a super-hydrophilic property (water contact angle 33.74°) without further treatment. As prepared, ENMs can provide continuous separation of surfactant-free and surfactant-stabilized water-in-oil emulsions with high efficiency (i.e., flux 8200 L m−2 h−1 (LMH), separation efficiency: >99.9%). In addition, their high stability (i.e., reusable, mechanically robust) would broaden the conditions under which they can be employed in the real field oil/water separation applications. Various characterization techniques (including morphology investigation, pore size, porosity, mechanical properties, and performance test) for gravity-driven oil/water separation were employed to evaluate the newly prepared EVOH ENMs.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes12040382