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Membrane Water Treatment
  Volume 8, Number 1, January 2017 , pages 51-71
DOI: https://doi.org/10.12989/mwt.2017.8.1.051
 


Preparation, characterization and comparison of antibacterial property of polyethersulfone composite membrane containing zerovalent iron or magnetite nanoparticles
Nadir Dizge, Yasin Ozay, U. Bulut Simsek, H. Elif Gulsen, Ceyhun Akarsu, Meral Turabik, Ali Unyayar and Kasim Ocakoglu

 
Abstract
    Antimicrobial polyethersulfone ultrafiltration membranes containing zerovalent iron (Fe0) and magnetite (Fe3O4) nanoparticles were synthesized via phase inversion method using polyethersulfone (PES) as membrane material and nano-iron as nanoparticle materials. Zerovalent iron nanoparticles (nZVI) were prepared by the reduction of iron ions with borohydride applying an inert atmosphere by using N2 gases. The magnetite nanoparticles (nMag) were prepared via co-precipitation method by adding a base to an aqueous mixture of Fe3+ and Fe2+ salts. The synthesized nanoparticles were characterized by scanning electron microscopy, X-ray powder diffraction, and dynamic light scattering analysis. Moreover, the properties of the synthesized membranes were characterized by scanning electron microscopy energy dispersive X-ray spectroscopy and atomic force microscopy. The PES membranes containing the nZVI or nMag were examined for antimicrobial characteristics. Moreover, amount of iron run away from the PES composite membranes during the dead-end filtration were tested. The results showed that the permeation flux of the composite membranes was higher than the pristine PES membrane. The membranes containing nano-iron showed good antibacterial activity against gram-negative bacteria (Escherichia coli). The composite membranes can be successfully used for the domestic wastewater filtration to reduce membrane biofouling.
 
Key Words
    zerovalent iron nanoparticles; magnetite nanoparticles; polyethersulfone membrane; phase inversion; antimicrobial membrane
 
Address
Nadir Dizge, Yasin Ozay, H. Elif Gulsen, Ceyhun Akarsu, Ali Unyayar:Department of Environmental Engineering, Mersin University, 33343 Yenisehir, Mersin, Turkey
U. Bulut Simsek:Department of Nanotechnology and Advanced Materials, Mersin University, 33343 Yenisehir, Mersin, Turkey
Meral Turabik :Department of Nanotechnology and Advanced Materials, Mersin University, 33343 Yenisehir, Mersin, Turkey/Department of Chemical Programme Technical Science Vocational School, Mersin University,
33343 Yenisehir, Mersin, Turkey
Kasim Ocakoglu:Department of Energy Systems Engineering, Mersin University, 33480 Mersin, Turkey
 

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