Application of zinc oxide and sodium alginate for biofouling mitigation in a membrane bioreactor treating urban wastewater

Sokhandan, Fatemeh; Homayoonfal, Maryam; Davar, Fatemeh

doi:10.1080/08927014.2020.1798934

Cited by 16 publications

(6 citation statements)

References 52 publications

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“…Moreover, while 66% of the neat PAN pores were blocked after 35 days with 33.5% FRR, the ZnOmodified PAN had 42% pore blockage with an FRR of 74%. 189 Nanofiber mats were prepared by electrospinning a solution containing polyvinylpyrrolidone (PVP), zinc acetate, and various ratios of AgNO 3 . Under UV-light irradiation the composite exerted a clear ZOI (8.3 mm) against S. aureus and 9.7 mm toward E. coli and Candida albicans strains.…”

Section: Tio 2 -Induced Bactericidal Properties In Membranesmentioning

confidence: 99%

The Role of Inorganic and Carbon Nanomaterials in Surface Modification to Attain Antibiofouling Polymeric Membranes for Water Treatment─A Review

Zikalala

Azizi

et al. 2023

Ind. Eng. Chem. Res.

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Membrane biofouling is a major stumbling block in membrane technology and particularly in the water treatment industry. Biofouling, in particular, is a serious concern because it is irreversible and thus cuts the lifespan of the polymeric membranes. This review, therefore, explores the fundamentals of biofouling development and the factors that promote biofilm growth in polymeric membrane systems. In this pursuit, we discuss avenues through which antibiofouling polymeric membranes have been fabricated using inorganic and carbon-based nanomaterials as membrane nanofillers to enhance the hydrophilicity and antibiofilm properties of the resultant composite membranes without significantly compromising the membrane filtering abilities. We further elucidate the chemistry by which the membrane nanofillers mitigate or inhibit the formation and growth of the undesirable biofilms on the surface and pores of the membranes. In achieving this, recent works on polymeric membrane biofouling are reviewed, with a particular focus on the correlation between the membrane performance and the physicochemical properties of the filler nanomaterials. The merits and demerits of inorganic and carbon-based nanomaterials as fillers to confer an antibacterial effect to the membranes are presented and perspectives and opinions on the future direction of biofouling mitigation in membranes are outlined.

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Section: Tio 2 -Induced Bactericidal Properties In Membranesmentioning

confidence: 99%

The Role of Inorganic and Carbon Nanomaterials in Surface Modification to Attain Antibiofouling Polymeric Membranes for Water Treatment─A Review

Zikalala

Azizi

et al. 2023

Ind. Eng. Chem. Res.

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“…There are some common techniques for incorporating nanomaterials onto cellulose membranes, e.g. spraying catalyst solutions onto the membrane [20] or the impregnation method [21,22]. Studies demonstrate that the membrane surface is covered with a layer of photocatalytic nanoparticles in this approach.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Dye Oxidation over CeO2 Nanoparticles Supported on Regenerated Cellulose Membrane

Thuy

Duong

Quỳnh

et al. 2022

Bull. Chem. React. Eng. Catal.

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A novel regenerated cellulose (RC) membrane containing cerium oxide (CeO2) nanoparticles is described in detail. In this work, CeO2 nanoparticles with high surface area and mesoporosity were prepared by a modified template-assisted precipitation method. Successful synthesis was achieved using cerium nitrate as a precursor, adjusting the final pH solution to around 11 by ammonium hydroxide and ethylene diamine, and annealing at 550 °C for 3 hours under a protective gas flow. This resulted in a surface area of 55.55 m².g–1 for the nanoparticles. The regenerated cellulose membrane containing CeO2 particles was synthesized by the novel and environmentally friendly method. The catalyst CeO2 and cellulose/CeO2 membrane were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), Electron paramagnetic resonance (EPR), and Brunauer-Emmett-Teller (BET) measurements. The g-value of 2.276 has confirmed the presence of the surface superoxide species of CeO2 nanoparticles in EPR. The photocatalytic activity of the catalyst and the membrane containing the catalyst was evaluated through the degradation of methylene blue under visible light irradiation by UV-VIS measurements. The cellulose/CeO2 membrane degraded 80% of the methylene blue solution in 120 minutes, showing a better photocatalytic activity than the CeO2 catalyst, which degraded approximately 62% in the same period. It has been proven that the RC membrane is not only a good transparent supporting material but also a good adsorption for high-performance of CeO2 catalyst. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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“…They explained that it's due to the nature of a higher volume of nano-ZnO particles which have a large surface area on the membrane that can adsorb hydrophilic -OH and therefore increases the hydrophilicity. Sokhandan et al [27] reported introduction of hydrophilic agents such as 2.0 wt.% of sodium alginate (C6H7O6Na) in 2 wt.% ZnO improved the flux from 37 to 51 L/m 2 h, porosity from 63.00 to 72.00%, antibacterial nature, higher flux recovery from 33.50 to 74.00% and hydrophilicity from 42.00 to 28.00° for sodium alginate coated zinc oxide in Polyacrylonitrile (ZnO@SA/PAN) flat sheet membrane.…”

Section: Introductionmentioning

confidence: 99%

High flux polysulfone braided hollow fiber membrane for wastewater treatment role of zinc oxide as hydrophilic enhancer

Peechmani

Othman

Kamaludin

et al. 2021

Journal of Environmental Chemical Engineering

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Application of zinc oxide and sodium alginate for biofouling mitigation in a membrane bioreactor treating urban wastewater

Cited by 16 publications

References 52 publications

The Role of Inorganic and Carbon Nanomaterials in Surface Modification to Attain Antibiofouling Polymeric Membranes for Water Treatment─A Review

The Role of Inorganic and Carbon Nanomaterials in Surface Modification to Attain Antibiofouling Polymeric Membranes for Water Treatment─A Review

Catalytic Dye Oxidation over CeO2 Nanoparticles Supported on Regenerated Cellulose Membrane

High flux polysulfone braided hollow fiber membrane for wastewater treatment role of zinc oxide as hydrophilic enhancer

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