Open AccessRemoval of fluoride ions from groundwater using surface-modified ultrafiltration membrane
Author(s) -
W. Yanwachiragul,
Jenyuk Lohwacharin,
Warayuth Sajomsang,
Sudkanueng Singto
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/773/1/012007
Subject(s) - membrane , fluoride , ultrafiltration (renal) , chemical engineering , materials science , imidazolate , polyamide , nanocomposite , layer (electronics) , water treatment , scanning electron microscope , chromatography , nanotechnology , chemistry , composite material , inorganic chemistry , environmental engineering , environmental science , biochemistry , engineering
Zeolitic imidazolate framework no.8 (ZIF8), a kind of metal organic frameworks (MOFs), has potential use in water treatment due to water stability. However, there are few studies of ZIF8/polyamide as a thin-film nanocomposite (TFN) membrane. Herein, a film on the surface of ultrafiltration membrane was generated with ZIF8 nanoparticles to fabricate the TFN membrane. Thus, the objective was to investigate feasibility of the ZIF8 membrane for fluoride removal from water. A scanning electron microscopy analysis demonstrates that the ZIF8 layer was successfully made on the UF surface. The ZIF8 layer rendered an increase in the fluoride rejection, probably through size sieving by small windows of the MOFs, compared to the virgin UF membrane, while sacrificed the water permeability. It is anticipated that reducing large voids between ZIF8 particles and thickness of the ZIF8 layer improve the fluoride rejection and water permeability.