Polyamide desalination membranes: Formation, structure, and properties

Freger, Viatcheslav; Ramon, Guy

doi:10.1016/j.progpolymsci.2021.101451

Cited by 183 publications

(133 citation statements)

References 252 publications

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“…Freger and Ramon in a recent review [79], experimentally determined parameters such as density or cross-linking degree may not reflect the film behavior as a selective membrane. This study contributed to the preparation, at the molecular level, of samples with different structural characteristics.…”

Section: Discussionmentioning

confidence: 99%

Molecular simulation of a reverse osmosis polyamide membrane layer. In silico synthesis using different reactant concentration ratios

Song

Teuler

Guiga

et al. 2022

Journal of Membrane Science

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Section: Discussionmentioning

confidence: 99%

Molecular simulation of a reverse osmosis polyamide membrane layer. In silico synthesis using different reactant concentration ratios

Song

Teuler

Guiga

et al. 2022

Journal of Membrane Science

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“…For the desalination purpose, a polyamide nanofiltration membrane was prepared through interfacial polymerization and electrostatic assembly by assembling a nontoxic organic compound, i.e., phytic acid on it and their removal efficiency was checked 18 . Recent reviews have highlighted the properties of polyamide desalination membranes in large-scale desalination and membrane separation of toxic organic compounds 19 , 20 . Saleh et al have used titania-incorporated polyamide nanocomposite 21 , silica/polyamide nanocomposite 22 , polyamide embedded magnetic palygorskite 23 , polyamide-graphene composite 24 , polyamide grafted carbon microspheres 25 , and clay-based polyamide nanocomposites 26 for the adsorption of dyes and toxic metals.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of polyamide-12/cement nanocomposite and its testing for different dyes removal from aqueous solution: characterization, adsorption, and regeneration studies

Aldahash

Higgins

Siddiqui

et al. 2022

Sci Rep

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Polyamide-12/Portland cement nanocomposite was prepared by using the exfoliated adsorption method. The fabricated nanocomposite was applied first time to remove Congo red (CR), brilliant green (BG), methylene blue (MB), and methyl red (MR) from the synthetic wastewater. The polymer nanocomposite was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, elemental mapping, Brunauer–Emmett–Teller surface area analysis, and X-ray diffraction. The adsorption was rapid and all the studied dyes were absorbed on the surface of the polymer nanocomposite in 90 min. The point of zero charge was found at pH 5 and the factors such as pH, time, and temperature were found to affect the adsorption efficiency. Freundlich isotherm and pseudo-second-order models well-fitted the adsorption isotherm and kinetics data, respectively. The calculated maximum adsorption capacity was 161.63, 148.54, 200.40, and 146.41 mg/g for CR, BG, MB, and MR, respectively. The mode of the adsorption process was endothermic, spontaneous, and physical involving electrostatic attraction. On an industrial scale, the high percentage of desorption and slow decrease in the percentage of adsorption after every five regeneration cycles confirm the potential, practicality, and durability of the nanocomposite as a promising and advanced adsorbent for decolorization of colored wastewater.

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“…17 Benefiting from the special formation mechanisms of the IP-based TFC NF membranes, the accurate control of the transfer rate of the PIP monomers into the organic solutions is assumed to be an efficient method to regulate the generation of a PA film with tailored structure and performance. 18 To date, various approaches have been adopted to control the diffusion rate of the PIP monomers, thus tailoring the performance of the TFC NF membranes. Numerous studies have reported that modification of the supports could increase the surface porosity and hydrophilicity, 19−21 thus leading to higher adsorption of PIP monomers.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, a much thinner separation layer is achieved compared to that of the symmetrically structured NF membranes fabricated by the phase inversion method . Benefiting from the special formation mechanisms of the IP-based TFC NF membranes, the accurate control of the transfer rate of the PIP monomers into the organic solutions is assumed to be an efficient method to regulate the generation of a PA film with tailored structure and performance …”

Section: Introductionmentioning

confidence: 99%

Toward Enhancing Desalination and Heavy Metal Removal of TFC Nanofiltration Membranes: A Cost-Effective Interface Temperature-Regulated Interfacial Polymerization

Cheng

Lai

et al. 2021

ACS Appl. Mater. Interfaces

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Polyamide (PA) chemistry-based nanofiltration (NF) membranes have an important role in the field of seawater desalination and wastewater reclamation. Achieving an ultrathin and defect-free active layer via precisely controlled interfacial polymerization (IP) is an effective routine to improve the separation efficiencies of NF membranes. Herein, the morphologies and chemical structures of the thin-film composite (TFC) NF membranes were accurately regulated by tailoring the interfacial reaction temperature during the IP process. This strategy was achieved by controlling the temperature (−15, 5, 20, 35, and 50°) of the oil-phase solutions. The structural compositions, morphological variations, and separation features of the fabricated NF membranes were studied in detail. In addition, the formation mechanisms of the NF membranes featuring different PAs were also proposed and discussed. The temperature-assisted IP (TAIP) method greatly changed the compositions of the resultant PA membranes. A very smooth and thin PA film was obtained for the NF membranes fabricated at a low interfacial temperature; thus, a high 19.2 L m −2 h −1 bar −1 of water permeance and 97.7% of Na 2 SO 4 rejection were observed. With regard to the NF membranes obtained at a high interfacial temperature, a lower water permeance and higher salt rejection with fewer membrane defects were achieved. Impressively, the high interfacial temperature-assisted NF membranes exhibited uniform coffee-ring-like surface morphologies. The special surface-featured NF membrane showed superior separation for selected heavy metals. Rejections of 93.9%, 97.9%, and 87.7% for Cu 2+ , Mn 2+ , and Cd 2+ were observed with the optimized membrane. Three cycles of fouling tests indicated that NF membranes fabricated at low temperatures exhibited excellent antifouling behavior, whereas a high interface temperature contributed to the formation of NF membranes with high fouling tendency. This study provides an economical, facile, and universal TAIP strategy for tailoring the performances of TFC PA membranes for environmental water treatment.

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Polyamide desalination membranes: Formation, structure, and properties

Cited by 183 publications

References 252 publications

Molecular simulation of a reverse osmosis polyamide membrane layer. In silico synthesis using different reactant concentration ratios

Molecular simulation of a reverse osmosis polyamide membrane layer. In silico synthesis using different reactant concentration ratios

Fabrication of polyamide-12/cement nanocomposite and its testing for different dyes removal from aqueous solution: characterization, adsorption, and regeneration studies

Toward Enhancing Desalination and Heavy Metal Removal of TFC Nanofiltration Membranes: A Cost-Effective Interface Temperature-Regulated Interfacial Polymerization

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