Technological Prospection on Membranes Containing Silver Nanoparticles for Water Disinfection

Linhares, Aline M.F.; Grando, Rafaela Lora; Borges, Cristiano Piacsek; Fonseca, Fabiana Valéria da

doi:10.2174/1872210511666170920144342

Cited by 8 publications

(1 citation statement)

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“…Furthermore, it is reported that the free radicals can be generated when AgNPs are in contact with bacteria [22]. However, the mechanism underlying the antimicrobial effects of AgNPs is not fully understood and remains debatable [23,24]. In addition, the effect of AgNPs on the antifouling properties of fabricated membranes has not been fully investigated.…”

Section: Introductionmentioning

confidence: 99%

Industrial oily wastewater treatment by microfiltration using silver nanoparticle-incorporated poly (acrylonitrile-styrene) membrane

El Jery,

Ahsan,

Sammen

et al. 2023

Environ Sci Eur

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Membrane filtration exhibit operational limitations such as biofouling, which leads to concentration polarization and reduces permeability and selectivity, despite advantages such as low operating cost, high selectivity, and permeability. In recent years, the antibacterial properties of silver nanoparticles (AgNPs) have been investigated for improving membrane processes; however, the fouling phenomena in presence of AgNPs in the membrane matrix have not been fully discussed. Herein, the antifouling properties of a poly (acrylonitrile-styrene) copolymer incorporated with AgNPs were studied in a microfiltration membrane process. The Creighton method was used to synthesize AgNPs, and the effects of AgNPs on the porosity, morphology, pore size, mechanical strength, permeability, and selectivity of the membranes were investigated. Moreover, to investigate the biofouling of the obtained membranes, microfiltration of industrial oily wastewater was performed at constant pressure over three cycles. Using AgNPs in the membrane matrix resulted in enhanced antifouling properties of the copolymer membrane, which is related to the structure of the AgNPs in the casting solution, as proven by SAXS analysis. The results show that the CFU% for Staphylococcus aureus and E.coli reach 2% and 6%, respectively. Finally, the Derjaguin–Landau–Verwey–Overbeek (DLVO) thermodynamic model was applied to study the antifouling mechanism, correctly predict the separation behavior in the membrane, and design, simulate, and optimize the separation processes in the membrane separation plantsa. The DLVO model could predict the separation behavior in the synthesized membranes, and the poly(acrylonitrile-styrene) copolymer membranes containing AgNPs were proven have promising industrial wastewater treatment applications.

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Section: Introductionmentioning

confidence: 99%