Overcoming the trade off between the permeation and rejection of TFN nanofiltration membranes through embedding magnetic inner surface functionalized nanotubes

Fallahnejad, Z.; Bakeri, Gholamreza; Ismail, Ahmad Fauzi

doi:10.1016/j.psep.2022.07.066

Cited by 9 publications

(3 citation statements)

References 122 publications

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“…Recently, the development of positively charged NF membranes to remove heavy metals using the IP approach has attracted significant attention. Studies have demonstrated that the addition of nanoparticles and the creation of interlayers and surfactants can enhance the permeation flux of NF membranes [ 53 ]. The timeline for the discovery and use of nanofiltration membranes is shown in Figure 9 .…”

Section: Nanofiltration Membranesmentioning

confidence: 99%

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Covaliu-Mierlă,

Păunescu,

Iovu

2023

Membranes

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The presence of heavy metal ions in polluted wastewater represents a serious threat to human health, making proper disposal extremely important. The utilization of nanofiltration (NF) membranes has emerged as one of the most effective methods of heavy metal ion removal from wastewater due to their efficient operation, adaptable design, and affordability. NF membranes created from advanced materials are becoming increasingly popular due to their ability to depollute wastewater in a variety of circumstances. Tailoring the NF membrane’s properties to efficiently remove heavy metal ions from wastewater, interfacial polymerization, and grafting techniques, along with the addition of nano-fillers, have proven to be the most effective modification methods. This paper presents a review of the modification processes and NF membrane performances for the removal of heavy metals from wastewater, as well as the application of these membranes for heavy metal ion wastewater treatment. Very high treatment efficiencies, such as 99.90%, have been achieved using membranes composed of polyvinyl amine (PVAM) and glutaraldehyde (GA) for Cr3+ removal from wastewater. However, nanofiltration membranes have certain drawbacks, such as fouling of the NF membrane. Repeated cleaning of the membrane influences its lifetime.

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Section: Nanofiltration Membranesmentioning

confidence: 99%

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Covaliu-Mierlă,

Păunescu,

Iovu

2023

Membranes

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“…[26][27][28][29][30][31] In addition, the composite membrane itself also forms a "trade off" effect. 32 In response to the challenges faced by composite membranes, it has been proven that using novel amine monomers to regulate the pore structure and pore size distribution of composite NF membranes and improve the surface charge of composite membranes is an effective means. 33,34 Other methods can also improve the ion selectivity of composite NF membranes, such as introducing hydrophilic intermediate layers, 35,36 using new membrane preparation methods, 37,38 introducing surfactants, 39,40 and surface modification.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the diffusion rate of amine monomers in the organic phase is slow, whereas amine monomers and acyl chloride monomers have high reactivity, which leads to the nanoscale heterogeneity and wide pore size distribution of PA composite NF membranes 26–31 . In addition, the composite membrane itself also forms a “trade off” effect 32 . In response to the challenges faced by composite membranes, it has been proven that using novel amine monomers to regulate the pore structure and pore size distribution of composite NF membranes and improve the surface charge of composite membranes is an effective means 33,34 .…”

Section: Introductionmentioning

confidence: 99%

Preparation of highly selective nanofiltration composite membranes based on a novel soluble rigidly contorted monomer

Zhou,

Liu,

Jiang

et al. 2024

J of Applied Polymer Sci

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Nanofiltration composite membranes with high selectivity are one of the most critical cores in water treatment, and regulating the surface charge and pore structure of active separation layers in thin film composite membranes is one of the most effective means to improve the selectivity of composite membranes. This article synthesized a novel monomer with positive charge and a rigid twisted Tröger's base structure (named TBDA‐SO3), which was manipulated to improve the microporous structure and surface charge of the composite membrane. By interfacial polymerization, TBDA‐SO3, and piperazine were co‐reacted with trimesoyl chloride to successfully prepare positively charged, highly selective, and strongly microporous polyamide composite nanofiltration membranes. The best‐performing composite nanofiltration membrane in this article has a permeability similar to that of the control group's poly(piperazine amide) (PPA) membrane (pure water flux, 7.8 L m−2 h−1 bar−1), but has excellent divalent cation selectivity (52.57), which is 4.4 times that of the control group's PPA membrane.

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Incorporation of internal surface functionalized MCM-41 in thin film nanocomposite NF membrane for desalination applications

2023

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Overcoming the trade off between the permeation and rejection of TFN nanofiltration membranes through embedding magnetic inner surface functionalized nanotubes

Cited by 9 publications

References 122 publications

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Recent Advances in Membranes Used for Nanofiltration to Remove Heavy Metals from Wastewater: A Review

Preparation of highly selective nanofiltration composite membranes based on a novel soluble rigidly contorted monomer

Incorporation of internal surface functionalized MCM-41 in thin film nanocomposite NF membrane for desalination applications

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