Nanocomposite substrate-supported nanofiltration membrane for efficient treatment of rare earth wastewater

Jiang, Qinliang; Wang, Yiwen; Li, Yang; Luo, Jianquan; Xiong, Jie

doi:10.1016/j.rineng.2023.101040

Cited by 6 publications

(3 citation statements)

References 80 publications

(57 reference statements)

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“… ( a ) Representation of the compaction of pH at the nanocomposite behavior of the nanofiltration membrane. Data were retrieved from [ 82 , 87 , 92 , 93 , 99 ]. ( b ) Schematic representation of the impaction of nanocomposite materials at different concentrations compared with untreated nanofiltration membrane in the rejection rate of Zn 2+ , Cr 2+ , and Pb 2+ .…”

Section: Nanocompositesmentioning

confidence: 99%

“…The increment in pressure not only increases the adsorption power of heavy metals but also increases the selectivity and water permeability of the membrane [ 99 ]. Considering that the nanofiltration membrane is a pressure-based method, it is allowable to pass the ions at pressures between 5 and 20 bar.…”

Section: Nanocompositesmentioning

confidence: 99%

“…The degree of cross-linking among materials is a strong indication of how the interconnection takes place. Antifouling agents can form two types of surface modification: 2D modification, which includes surface coating and surface grafting, and 3D modification, which includes physical blending and surface segregation [ 99 ].…”

Section: Mitigation Fouling Of Nf Membranesmentioning

confidence: 99%

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Nanofiltration Membranes for the Removal of Heavy Metals from Aqueous Solutions: Preparations and Applications

Mahmoud,

Mostafa

2023

Membranes

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Water shortages are one of the problems caused by global industrialization, with most wastewater discharged without proper treatment, leading to contamination and limited clean water supply. Therefore, it is important to identify alternative water sources because many concerns are directed toward sustainable water treatment processes. Nanofiltration membrane technology is a membrane integrated with nanoscale particle size and is a superior technique for heavy metal removal in the treatment of polluted water. The fabrication of nanofiltration membranes involves phase inversion and interfacial polymerization. This review provides a comprehensive outline of how nanoparticles can effectively enhance the fabrication, separation potential, and efficiency of NF membranes. Nanoparticles take the form of nanofillers, nanoembedded membranes, and nanocomposites to give multiple approaches to the enhancement of the NF membrane’s performance. This could significantly improve selectivity, fouling resistance, water flux, porosity, roughness, and rejection. Nanofillers can form nanoembedded membranes and thin films through various processes such as in situ polymerization, layer-by-layer assembly, blending, coating, and embedding. We discussed the operational conditions, such as pH, temperature, concentration of the feed solution, and pressure. The mitigation strategies for fouling resistance are also highlighted. Recent developments in commercial nanofiltration membranes have also been highlighted.

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