Enhancing the flux and salt rejection of thin-film composite nanofiltration membranes prepared on plasma-treated polyethylene using PVA/TS-1 composite

Dehghanpour, Safoura Bakhodaye; Parvizian, Fahime; Vatanpour, Vahid; He, Tong‐Chuan

doi:10.1016/j.reactfunctpolym.2022.105329

Cited by 20 publications

(6 citation statements)

References 77 publications

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“…Specially, size exclusion and electrostatic repulsion mainly determined the salts rejection of membrane [37]. As revealed before, hydrated radius of Na + , Mg 2+ , SO 4 2− , Cl − were 0.72, 0.86, 0.76 and 0.66 nm, respectively [38]. The larger hydrated radius of ions led to higher rejections of Na 2 SO 4 and MgSO 4 than that of MgCl 2 and NaCl.…”

Section: Separation Performance Of Membranesmentioning

confidence: 63%

Composite nanofiltration membrane with tannic acid coordinated collagen fibers for enhanced molecule separation

Xie,

Ge,

et al. 2023

Collagen & Leather

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Biomass-based membranes have attracted increasing attentions due to their cheap and sustainable advantages. In this work, a novel thin-film composite (TFC) nanofiltration (NF) membrane was fabricated through a facial interfacial polymerization (IP) process by initiate the crosslinking reaction between collagen fibers (CFs) and tannic acid (TA). The increased TA concentrations endowed the TFC membrane with a higher crosslinking degree, a thicker active layer and a rougher top surface. At optimized condition with 0.60 mg TA decoration, the TFC-3 membrane exhibited a high water permeability of 23.49 L m−2 h−1 bar−1 with high rejections above 98.0% for congo red, reactive blue 19, coomassie blue G-250, and methyl blue. Furthermore, the membrane preserved remarkable salt retentions (93.3% for Na2SO4, 83.4% for MgSO4, 36.2% for MgCl2, and 26.4% for NaCl) and satisfying operation stability. This facial fabrication method offered a new insight to employ biomass for molecular precise separation. Graphical abstract

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Section: Separation Performance Of Membranesmentioning

confidence: 63%

Composite nanofiltration membrane with tannic acid coordinated collagen fibers for enhanced molecule separation

Xie,

Ge,

et al. 2023

Collagen & Leather

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“…The TFC NF membrane usually comprises more than one component: a polyester nonwoven fabric, which is coated by polysulfone UF membrane asymmetric porous support, and a superthin active skin layer [piperazine-polyamide (PIP−PA)] created by the in situ IP on the support surface. 7 The last layer (superthin active layer) plays the most crucial role in controlling permeability and selectivity characteristics. 8 PA NF membranes are often formed on the UF membrane by IP between PIP and trimesoyl chloride (TMC).…”

Section: Introductionmentioning

confidence: 99%

“…Regarding separation properties, the NF membranes fall between the ultrafiltration (UF) and reverse osmosis (RO) membranes. , They are often made by the interfacial polymerization (IP) method and are mainly thin-film composites (TFC). The TFC NF membrane usually comprises more than one component: a polyester nonwoven fabric, which is coated by polysulfone UF membrane asymmetric porous support, and a superthin active skin layer [piperazine-polyamide (PIP–PA)] created by the in situ IP on the support surface . The last layer (superthin active layer) plays the most crucial role in controlling permeability and selectivity characteristics .…”

Section: Introductionmentioning

confidence: 99%

Improvement of Permeability and Antifouling Properties of Polyamide Thin-Film Nanocomposite Nanofiltration Membranes Using Boron Nitride Quantum Dots

Vatanpour,

Mehrabi,

Masteri-Farahani

et al. 2024

Ind. Eng. Chem. Res.

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Nanofiltration membranes play a crucial role in various separation processes, demanding continuous advancements to improve their performance and address challenges such as fouling. In this study, we present the fabrication and characterization of a high-flux thin-film composite nanofiltration membrane (TFC NF) through the incorporation of hydrophilic boron nitride quantum dots (BNQDs) at various concentrations (0.001–0.02 wt %). The membranes were synthesized by using interfacial polymerization between piperazine and trimesoyl chloride monomers. Surface analyses, including contact angle measurements, field emission-scanning electron microscopy, and atomic force microscopy, revealed that the membranes with incorporated BNQDs exhibited a smoother, more uniform, thinner, and more hydrophilic surface. Zeta potential measurements confirmed an increase in the negative surface charge of the NF membranes containing BNQDs. The separation efficiency was evaluated through a cross-flow filtration setup, with the TFC NF membrane containing 0.01 wt % BNQDs demonstrating the highest separation efficiency: 96.56% for Na2SO4, 96.48% for MgSO4, 91.3% for MgCl2, and 51.38% for NaCl, coupled with a water flux of 150.5 L/m2 h. Furthermore, water flux was enhanced in all modified membranes, reaching a maximum of 170% of the bare membrane flux (195.5 L/m2 h) in the TFC NF membrane containing 0.02 wt % BNQDs. However, with the increased flux in the TFC NF 0.02 wt % membrane, rejection rates for Na2SO4 and NaCl decreased by 1.84 and 7.15%, respectively, compared to the TFC NF 0.01 wt % membrane. Antifouling properties were evaluated by filtration of a bovine serum albumin /NaCl solution, with all modified membranes exhibiting improved antifouling properties. The TFC NF 0.02 wt % membrane demonstrated superior antifouling performance.

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“…As a result of oxygen plasma pretreatment usage in the membrane preparation process, the extent of membrane fouling can be reduced and the flux of the prepared membrane can be improved. Oxygen plasma pretreatment of the PE films improves the wettability of the support film during the IP process . Plasma pretreatment endows PE membranes with hydrophilic (–OH, –COOH, –COO) surface groups to reinforce PE membrane hydrophilicity and adhesion properties, which facilitate active layer formation with low-fouling properties .…”

Section: Introductionmentioning

confidence: 99%

“…Oxygen plasma pretreatment of the PE films improves the wettability of the support film during the IP process. 23 Plasma pretreatment endows PE membranes with hydrophilic (−OH, −COOH, − COO) surface groups to reinforce PE membrane hydrophilicity and adhesion properties, which facilitate active layer formation with low-fouling properties. 24 In Park et al study, the treated membrane through oxygen plasma exposure of PE support before the IP process in preparation for an efficient TFC nanofiltration membrane indicated higher hydrophilicity compared with the unmodified membrane.…”

Section: Introductionmentioning

confidence: 99%

Polyethylene-Supported Thin-Film Nanocomposite Reverse Osmosis Membranes via Oxygen Plasma Pretreatment Modification and Nanotitanium Dioxide Incorporation for Efficient As(V) Removal

Amiri,

Sheydaei,

et al. 2023

Ind. Eng. Chem. Res.

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In this study, the combination of two surface modification approaches, including oxygen plasma pretreatment plus nanotitanium dioxide (TiO 2 ) incorporation, was investigated in the preparation of the a PE-supported thin-film nanocomposite (TFN) RO membrane through interfacial polymerization between 1,3-phenylenediamine (MPD) and trimesoyl chloride (TMC) monomers for efficient As(V) removal. Analyzation of the fabricated membrane was conducted via atomic force microscopy (AFM), field emission scanning electron microscopy (FESEM), attenuated total reflection-flourier transform infrared (ATR-FTIR) analyses, surface ζ-potential, and water contact angle measurement. Water permeation, desalination performance, As(V) removal efficiency, and antifouling properties of the membranes were examined in the cross-flow filtration setup. The obtained results showed that oxygen plasma pretreatment of the PE support tailored the inherent hydrophobicity of the PE support via inducing oxygen-containing surface groups, which facilitate the PA active layer formation. Furthermore, the incorporation of various concentrations (0.0025−0.02 wt %) of TiO 2 as the hydrophilic additive in the matrix of the PA active layer resulted in an increase of membrane hydrophilicity and negative surface charge. The p-PE/TiO 2 0.01 optimum membrane indicated the maximum pure water flux of 75.0 L m −2 h −1 at 15 bar, and superior desalination performance of 98.8, 99.5, and 99.8% rejection for NaCl, MgSO 4 , and Na 2 SO 4 salt solutions, respectively, along with incredible As(V) removal efficiency of 100%, which confirmed a remarkable betterment of optimum membrane performance compared with the p-PE membrane. The assessment results of the antifouling ability of the prepared membranes demonstrated that the p-PE/TiO 2 0.01 TFN-RO membrane indicated the highest fouling resistance with a flux loss of 10% after 48 h of filtration of the BSA/NaCl solution.

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Enhancing the flux and salt rejection of thin-film composite nanofiltration membranes prepared on plasma-treated polyethylene using PVA/TS-1 composite

Cited by 20 publications

References 77 publications

Composite nanofiltration membrane with tannic acid coordinated collagen fibers for enhanced molecule separation

Composite nanofiltration membrane with tannic acid coordinated collagen fibers for enhanced molecule separation

Improvement of Permeability and Antifouling Properties of Polyamide Thin-Film Nanocomposite Nanofiltration Membranes Using Boron Nitride Quantum Dots

Polyethylene-Supported Thin-Film Nanocomposite Reverse Osmosis Membranes via Oxygen Plasma Pretreatment Modification and Nanotitanium Dioxide Incorporation for Efficient As(V) Removal

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