TiO2/CDs modified thin-film nanocomposite polyamide membrane for simultaneous enhancement of antifouling and chlorine-resistance performance

Vatanpour, Vahid; Paziresh, Shadi; Mehrabani, Seyed Ali Naziri; Feizpoor, Solmaz; Habibi‐Yangjeh, Aziz; Koyuncu, İsmail

doi:10.1016/j.desal.2021.115506

Cited by 41 publications

(12 citation statements)

References 87 publications

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“…Several treatment technologies have been developed for water desalination, including reverse osmosis (RO) [94], microbial desalination cells (MDCs) [95], electrocoagulation [96], capacitive deionization (CDI) [97], and electrodialysis [34,98,99]. Nevertheless, disadvantages such as the formation of chemical sludge, high operational costs, excessive use of chemicals, membrane scaling and fouling, and high electrical energy consumption, either individually or as a combination, hamper effective use of these technologies.…”

Section: Other Processesmentioning

confidence: 99%

Boron carbon nitride nanosheets in water and wastewater treatment: A critical review

et al. 2022

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Section: Other Processesmentioning

confidence: 99%

Boron carbon nitride nanosheets in water and wastewater treatment: A critical review

et al. 2022

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“…From these obstacles, the relation between membrane separation efficiency (% rejection) and its permeability (productivity), 4 in addition to fouling generally 5 and chlorine exposure. As polyamide layer is well known to have a great layer deterioration upon exposure 6,7 . To date, and according to most probable chlorination mechanisms 8 the amide layer is been destroyed.…”

Section: Introductionmentioning

confidence: 99%

“…As polyamide layer is well known to have a great layer deterioration upon exposure. 6,7 To date, and according to most probable chlorination mechanisms 8 the amide layer is been destroyed. Getting the benefit of branched structure of tannic acid as green benigna hydrophilic compound which is easily introduced to the polymeric matrix through hydrogen bonding employing its phenolic hydroxyl structure.…”

Section: Introductionmentioning

confidence: 99%

Effect graphene oxide nanostructure/tannic acid on mixed polymeric substrate‐surface modified RO membranes

Shalaby

Abdallah

Wilken

et al. 2022

J of Applied Polymer Sci

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In this work, polyamide (PA) layer of (TFC) thin-film composite in reverse osmosis (RO) membranes are compared to facile cost-effective lower rejection RO-blend membranes using graphene oxide. Polyvinyl alcohol (PVA) is crosslinked with glutaraldehyde hydrogel and thereby showing the effect of a fixed concentration of graphene oxide (GO) at different surface modification stages. Surface grafting using methacrylic acid is performed to govern the role of the protective layer on the efficiency of the covered TFC layer as membranes performance regarding salt rejection and permeability. GO concentration of 0.25 wt% in PVA solution shows a maximum % rejection reaching 70 for 3PG and the highest permeate flux for 1PG is 45.52 LMH. While the TFC membranes T and TG have shown higher rejection percentages to reach 88.31% for 3TG of and the highest permeate flux is 30.7 LMH for 1TG and decreases to reach 24.56 LMH for 3TG. Different membrane characterizations are fulfilled through surface morphology, wettability, BET area, and adsorptive fouling.Optimized ratios for tannic acid, ZnO-nanostructure, and graphene oxide with the mixed polymeric substrate are reached. The effect of graphene oxide in the surface grafting layer over blend and TFC membranes are presented.

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“…Furthermore, each layer can be optimized to produce membranes with a higher performance [5]. Depending on the solvent, however, polymeric membranes are prone to swelling; thus, many researchers modify polymeric membranes with inorganic materials, such as silica [6][7][8][9][10], titanium dioxide [11][12][13][14], silver [15][16][17], zeolites [18][19][20][21][22], molybdenum sulfide [23][24][25], and clay [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

“…They found that, at an appropriate concentration of nano-NaX zeolite, the permeation flux and separation factor were enhanced. Vatanpour et al [14] dispersed titanium oxide/carbon dots in the aqueous phase to improve the membrane performance. Their modified membrane exhibited a smoother surface and a lower water contact angle than the unmodified one; in turn, the TFN polyamide membrane had better permeability.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Performance of Thin-Film Nanocomposite Membranes by Embedding in Situ Silica Nanoparticles

et al. 2022

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In this work, silica nanoparticles were produced in situ, to be embedded eventually in the polyamide layer formed during interfacial polymerization for fabricating thin-film nanocomposite membranes with enhanced performance for dehydrating isopropanol solution. The nanoparticles were synthesized through a sol-gel reaction between 3-aminopropyltrimethoxysilane (APTMOS) and 1,3-cyclohexanediamine (CHDA). Two monomers—CHDA (with APTMOS) and trimesoyl chloride—were reacted on a hydrolyzed polyacrylonitrile (hPAN) support. To obtain optimum fabricating conditions, the ratio of APTMOS to CHDA and reaction time were varied. Field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) were used to illustrate the change in morphology as a result of embedding silica nanoparticles. The optimal conditions for preparing the nanocomposite membrane turned out to be 0.15 (g/g) APTMOS/CHDA and 60 min mixing of APTMOS and CHDA, leading to the following membrane performance: flux = 1071 ± 79 g∙m−2∙h−1, water concentration in permeate = 97.34 ± 0.61%, and separation factor = 85.39. A stable performance was shown by the membrane under different operating conditions, where the water concentration in permeate was more than 90 wt%. Therefore, the embedment of silica nanoparticles generated in situ enhanced the separation efficiency of the membrane.

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TiO2/CDs modified thin-film nanocomposite polyamide membrane for simultaneous enhancement of antifouling and chlorine-resistance performance

Cited by 41 publications

References 87 publications

Boron carbon nitride nanosheets in water and wastewater treatment: A critical review

Boron carbon nitride nanosheets in water and wastewater treatment: A critical review

Effect graphene oxide nanostructure/tannic acid on mixed polymeric substrate‐surface modified RO membranes

Enhancing Performance of Thin-Film Nanocomposite Membranes by Embedding in Situ Silica Nanoparticles

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