Modification of commercial UF membranes by electrospray deposition of polymers for tailoring physicochemical properties and enhancing filtration performances

Korzhova, E. N.; Deon, Sébastien; Koubaa, Zakaryae; Fiévet, P.; Lopatin, D. A.; Baranov, O. V.

doi:10.1016/j.memsci.2019.117805

Cited by 20 publications

(3 citation statements)

References 53 publications

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“…Commonly, the most used methods in the surface modification to increase the surface hydrophilicity include adsorption, surface coating [31], plasma treatment [32], grafting [33], chemical modification and blending [12,28,34]. From the mentioned alternatives, both surface coating and grafting strategies may narrow membrane pores [28].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Performance of Low-Fouling UF Membranes for the Treatment of Isolated Soy Protein Solutions

et al. 2021

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Consumers are becoming more conscious about the need to include functional and nutritional foods in their diet. This has increased the demand for food extracts rich in proteins and peptides with physiological effects that are used within the food and pharmaceutical industries. Among these protein extracts, soy protein and its derivatives are highlighted. Isolated soy protein (ISP) presents a protein content of at least 90%. Wastewaters generated during the production process contain small proteins (8–50 kDa), and it would be desirable to find a recovery treatment for these compounds. Ultrafiltration membranes (UF) are used for the fractionation and concentration of protein solutions. By the appropriate selection of the membrane pore size, larger soy proteins are retained and concentrated while carbohydrates and minerals are mostly recovered in the permeate. The accumulation and concentration of macromolecules in the proximity of the membrane surface generates one of the most important limitations inherent to the membrane technologies. In this work, three UF membranes based on polyethersulfone (PES) were fabricated. In two of them, polyethylene glycol (PEG) was added in their formulation to be used as a fouling prevention. The membrane fouling was evaluated by the study of flux decline models based on Hermia’s mechanisms.

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Section: Introductionmentioning

confidence: 99%

Fabrication and Performance of Low-Fouling UF Membranes for the Treatment of Isolated Soy Protein Solutions

et al. 2021

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“…Polymer particles can be employed in the deposition of thin films as ES represents a convenient method that minimizes polymer consumption and allows precise control over the location of the deposit [78,165]. A single synthetic polymer is usually used for the production of thin films, which are particularly useful in photovoltaics [166], polymer light-emitting diodes [167], or controllable wetting of surfaces [168].…”

Section: Electrospraying Of Polymersmentioning

confidence: 99%

Electrospray: More than just an ionization source

et al. 2020

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is a potential-driven process of liquid atomization, which is employed in the field of analytical chemistry, particularly as an ionization technique for mass spectrometric analyses of biomolecules. In this review, we demonstrate the extraordinary versatility of the electrospray by overviewing the specifics and advanced applications of ESbased processing of low molecular mass compounds, biomolecules, polymers, nanoparticles, and cells. Thus, under suitable experimental conditions, ES can be used as a powerful tool for highly controlled deposition of homogeneous films or various patterns, which may sometimes even be organized into 3D structures. We also emphasize its capacity to produce composite materials including encapsulation systems and polymeric fibers. Further, we present several other, less common ES-based applications. This review provides an insight into the remarkable potential of ES, which can be very useful in the designing of innovative and unique strategies.

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“…Such methods always require new equipments and new processes, and take a long time to achieve the scale‐up production. Another way is to surface modify the commercial NF membranes through grafting positively charged monomers such as polyethylene‐imine (PEI) and allylamine 15–19 . The surface modified NF membranes may have lower water permeability or selectivity than the IP‐based NF membranes, but it is much easier to scale up production of the commercial NF membrane modification and to achieve industrial application.…”

Section: Introductionmentioning

confidence: 99%

Positively charged modification of commercial nanofiltration membrane to enhance the separation of mono−/divalent cation

Zhang

Liu

et al. 2022

J of Applied Polymer Sci

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The separation efficiency of monoÀ/divalent cations by a commercial nanofiltration membrane can be enhanced by increasing the surface positive charge. In this study, a novel surface grafting method was suggested, including activation with 2-chloro-1-methyliodopyridine (CMPI), and sequent graft polyethylene-imine (PEI) and 2,3-epoxypropyltrimethylammonium chloride (EPTAC). Less flux reduction (<30%) and higher separation factor of Mg 2+ /Na + (8.03-9.77) was achieved with the modified membrane under the grafting condition of 0.05 wt% CMPI, 2 wt% PEI, and 1 wt% EPTAC. The modified membranes had higher surface positive charge, hydrophilicity and cross-linking degree. During the 32-h filtration of a mixed salt solution, the modified membranes showed larger permeance (>11 L m À2 h À1 bar À1 ) and higher ion selectivity than the pristine membrane, with separation factors of Mg 2+ /Na + and Mg 2+ /Li + ranging 36.3-46.2 for the modified membranes. The modified membranes also have higher antifouling properties and are more stable at higher pH condition. The results demonstrate a facile and scalable surface modification method to improve the cation selectivity of commercial NF membranes, which shows great potential in the application of monoÀ/divalent ion separation.

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Modification of commercial UF membranes by electrospray deposition of polymers for tailoring physicochemical properties and enhancing filtration performances

Cited by 20 publications

References 53 publications

Fabrication and Performance of Low-Fouling UF Membranes for the Treatment of Isolated Soy Protein Solutions

Fabrication and Performance of Low-Fouling UF Membranes for the Treatment of Isolated Soy Protein Solutions

Electrospray: More than just an ionization source

Positively charged modification of commercial nanofiltration membrane to enhance the separation of mono−/divalent cation

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