Silver nanoparticle impregnated polyethersulfone ultrafiltration membrane: Optimization of degree of grafting of acrylic acid for biofouling prevention and improved water permeability

Mukherjee, Mohana; Bandyopadhyaya, Rajdip

doi:10.1016/j.jece.2020.103711

Cited by 20 publications

(14 citation statements)

References 44 publications

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“…In addition, it is well known that Ag-NP has a high affinity to polar functional groups (like -C ¼ O, -COOH, -OH, -NH2) (Srinivasan et al 2013). We have shown that, alteration of surface of the pre-fabricated PES membrane with acrylic acid and selective binding of Ag-NP on the membrane external surface prevents membrane biofouling to a significant extent (Mukherjee & Bandyopadhyaya 2020). The effect of increasing Ag-NP loading on nanoparticle distribution and subsequent filtration performance was also illustrated.…”

Section: Graphical Abstract Introductionmentioning

confidence: 87%

“…The surface of pre-fabricated, commercially available PES membrane was modified by graft polymerization method using acrylic acid in presence of UV radiation. The membrane was functionalized by following the previously reported protocol (Mukherjee & Bandyopadhyaya 2020). In this method, PES flat sheet membrane was immersed in a petri dish containing 300 mM acrylic acid solution and exposed to UV radiation for 15 min at an intensity of 2.06 mW cm À2 .…”

Section: Uv Assisted Graft Polymerization Of Pes Membrane By Acrylic Acidmentioning

confidence: 99%

“…Functional groups of native PES and AA-PES were detected by FTIR-ATR spectroscopy in our previous work (Mukherjee & Bandyopadhyaya 2020) to prove the addition of -COOH groups on the external side of the membrane, after functionalization using acrylic acid. Further, X-ray photoelectron spectroscopy (XPS) [Kratos Analytical (UK)] was used to verify the appearance of silver nanoparticles and its oxidation state.…”

Section: Characterisation Of Native Pes Aa-ag-pes and Ag-pes Membranesmentioning

confidence: 99%

“…Membrane technology has been playing a vital role in water purification for decades due to its high selectivity, compact footprint, feasibility of easy scale-up, as well as its environment friendly properties (Liu et al 2015a). Polyethersulfone (PES), a synthetic polymer, is used widely for the preparation of ultrafiltration and microfiltration membranes, for the purpose of water treatment, because of its high thermal stability, excellent chemical resistance and good mechanical strength (McKeen 2010;Mukherjee & Bandyopadhyaya 2020). However, biofouling of membrane is an eventuality, resulting in decrease in membrane permeate flux and hence membrane lifetime; also increase operational cost in terms of cleaning as well as replacement.…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

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Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention

Mukherjee

Bandyopadhyaya

2021

Water Science and Technology

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We present a new method for impregnation of silver nanoparticles (Ag NPs) at high loading on PES membrane's external surface, simultaneously retaining native membrane's porosity – to achieve a high water permeate flux without biofouling. This was possible by PES membrane's surface modification with acrylic acid (AA), finally leading to AA-Ag-PES membrane. AA-Ag-PES had a high (9.04%) Ag-NP loading selectively on membrane surface, as discrete, smaller (mean size: 20 nm) NPs. In nonfunctionalized Ag-PES, aggregated (mean size: 70 nm) NPs, with lower Ag loading (0.73 wt.%) was obtained, with NP being present both on membrane surface and inside pores. Consequently, AA-Ag-PES could maintain similar water permeability and porosity (10,153.05 Lm−2 h−1bar−1 and 69.98%, respectively), as in native PES (11,368.74 Lm−2 h−1bar−1 and 68.86%, respectively); whereas both parameters dropped significantly for Ag-PES (4,869.66 Lm−2 h−1bar−1 and 49.02%, respectively). AA-Ag-PES also showed least flux reduction (7.7%) due to its anti-biofouling property and high flux recovery after usage and cleaning, compared to native PES and Ag-PES membrane's much higher flux reduction (54.29% and 36.7%, respectively). Hence, discrete NP impregnation, avoiding pore blockage, is key for achieving high water flux and anti-biofouling properties (in AA-Ag-PES), compared to non-functionalized Ag-PES, due to aggregated Ag-NPs inside its pores.

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Section: Graphical Abstract Introductionmentioning

confidence: 87%

Section: Uv Assisted Graft Polymerization Of Pes Membrane By Acrylic Acidmentioning

confidence: 99%

Section: Characterisation Of Native Pes Aa-ag-pes and Ag-pes Membranesmentioning

confidence: 99%

Section: Graphical Abstract Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention

Mukherjee

Bandyopadhyaya

2021

Water Science and Technology

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“…Thereafter, new materials are desired to improve the antifouling properties and hydrophobicity of these membranes. Inorganic nanoparticles have been investigated for such purpose [16]. Introducing nanoparticles into the membrane matrix during the phase inversion process increases the hydrophilicity and the antifouling behavior of the membrane.…”

Section: Introductionmentioning

confidence: 99%

Polysulfone nanofiltration membranes enriched with functionalized graphene oxide for dye removal from wastewater

Abdelhamid

El‐Sayed

Khalil

2020

Journal of Polymer Engineering

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Composite-nanofiltration membranes based on polysulfone (PSU) and functionalized graphene oxide (f-GO) were prepared for dye removal from aqueous media. Graphene oxide (GO) was introduced to enhance the performance of these membranes. GO was functionalized using an aminated heterocyclic compound, namely 6-amino-4-(4-nitrophenyl)-3-methyl-4-phenyl-4,7-dihydro-1H-pyrazolo-[3,4-b]pyridine-5carbonitrile. The f-GO was incorporated into the PSU membrane matrix in different weight ratios (0.25, 0.5, 1, 2 and 4 wt %). Characterizing the produced membranes with scanning electron microscope, Fourier Transform Infrared - Attenuated Total Reflectance (FTIR-ATR) and X-ray diffraction indicated the well dispersion of f-GO in the membrane matrix. The obtained membranes were applied to remove Congo red and methylene blue, as typical anionic and cationic dyes respectively from water. The modified membranes showed superior efficiency in terms of water flux and dye rejection upon being compared with the control membrane. The composite membranes loaded with f-GO exhibited promising dye removal efficiency for both dyes.

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In situ generated silver nanoparticles embedded in polyethersulfone nanostructured membranes (Ag/PES) for antimicrobial decontamination of water

Patala

Nyoni

Mamba

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: The general performance of polymeric membranes is hindered by the build-up of microbial foulants both on the surface and inside the pores. This justifies the inclusion of antimicrobial agents within the membranes in order to circumvent the biofouling process. A nonsolvent-induced phase separation process was used to fabricate the membranes following the in situ reduction of silver (Ag) in the polymer dope solution. Fourier transform infrared, atomic force microscopy (AFM), scanning and transmission electron microscopy, and drop shape analyzer were used to study different properties of the membranes.RESULTS: Based on the results of AFM and contact angle measurements, the inclusion of Ag nanoparticles (NPs) improved the membrane hydrophilicity. The disk diffusion method was applied to study the antimicrobial properties of the membranes. The fabricated Ag/ polyethersulfone (PES) membranes showed antimicrobial activity against representatives of both Gram-positive and -negative bacteria, and this was confirmed by the zones of inhibition (11 mm for Escherichia coli; 13 mm for Bacillus cereus). From this a general proposed antimicrobial mechanism via the generation of reactive oxygen species (ROS) was provided. CONCLUSION:The fabricated Ag/PES membranes can perform a dual function of complete microbial inactivation and ultrafiltration of polluted water to provide better quality water with reduced membrane fouling.

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Silver nanoparticle impregnated polyethersulfone ultrafiltration membrane: Optimization of degree of grafting of acrylic acid for biofouling prevention and improved water permeability

Cited by 20 publications

References 44 publications

Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention

Engineered polyethersulfone membrane for well-dispersed silver nanoparticle impregnation at high loading: high water permeate flux and biofouling prevention

Polysulfone nanofiltration membranes enriched with functionalized graphene oxide for dye removal from wastewater

In situ generated silver nanoparticles embedded in polyethersulfone nanostructured membranes (Ag/PES) for antimicrobial decontamination of water

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