Feasibility and performance of a thin-film composite seawater reverse osmosis membrane fabricated on a highly porous microstructured support

Lim, Yu Jie; Lee, Jaewoo; Bae, Tae‐Hyun; Torres, Jaume; Wang, Rong

doi:10.1016/j.memsci.2020.118407

Cited by 41 publications

(46 citation statements)

References 67 publications

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“…The improvements in water permeance and salt rejection highlight the advantages of combining a nanofibrous interlayer with an MF membrane as the support. 40 The high water permeance is accompanied with a high selectivity for both Mg 2+ /Na + and SO 4 2− /Cl − which equals 30.1 and 279.0, respectively. The hydrated radii of Na + , Mg 2+ , Ca 2+ , Cl − , and SO 4 2− are 0.36, 0.43, 0.41, 0.33 and 0.38 nm, respectively.…”

Section: Resultsmentioning

confidence: 95%

Ultrapermeable nanofiltration membranes with tunable selectivity fabricated with polyaniline nanofibers

Lin

Zhang

et al. 2022

J. Mater. Chem. A

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Section: Resultsmentioning

confidence: 95%

Ultrapermeable nanofiltration membranes with tunable selectivity fabricated with polyaniline nanofibers

Lin

Zhang

et al. 2022

J. Mater. Chem. A

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“…It has been reported many times that the surface morphology and the chemical nature of the support membrane affects the IP reaction significantly [ 17 , 18 , 19 , 20 ]. In this work, two different commercial polysulfone membranes (PSf1, PSf2) were used as supports for IP reaction.…”

Section: Resultsmentioning

confidence: 99%

Effect of Additives during Interfacial Polymerization Reaction for Fabrication of Organic Solvent Nanofiltration (OSN) Membranes

et al. 2021

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Thin film composite (TFC) membranes is the dominant type of desalination in the field of membrane technology. Most of the TFC membranes are fabricated via interfacial polymerization (IP) technique. The ingenious chemistry of reacting acyl chlorides with diamines at the interface between two immiscible phases was first suggested by Cadotte back in the 1980s, and is still the main chemistry employed now. Researchers have made incremental improvements by incorporating various organic and inorganic additives. However, most of the TFC membrane literature are focused on improving the water desalination performance. Recently, the application spectrum of membrane technology has been expanding from the aqueous environment to harsh solvent environments, now commonly known as Organic Solvent Nanofiltration (OSN) technology. In this work, some of the main additives widely used in the desalination TFC membranes were applied to OSN TFC membranes. It was found that tributyl phosphate (TBP) can improve the solubility of diamine monomer in the organic phase, and sodium dodecyl sulfate (SDS) surfactant can effectively stabilize the IP reaction interface. Employing both TBP and SDS exhibited synergistic effect that improved the membrane permeance and rejection in solvent environments.

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“…Indeed, we observed that pore size ( Figure 6 ) and porosity ( Figure 7 ) were smaller as more ESM was added. This decrease is anticipated to improve the weakened mechanical properties, as smaller pores tend to be more suitable than larger ones for enhancing the mechanical properties of a porous polymer matrix by whittling down the number of macrovoids where mechanical failure can occur [ 45 , 46 ]. As such, although the ESM may have appeared to have weakened the hydrogel’s mechanical properties, the detriments were not serious since the smaller pores resulting from the addition of the ESM counteracted the weakness of the ESM.…”

Section: Resultsmentioning

confidence: 99%

Eggshell Membrane/Gellan Gum Composite Hydrogels with Increased Degradability, Biocompatibility, and Anti-Swelling Properties for Effective Regeneration of Retinal Pigment Epithelium

et al. 2020

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A gellan gum (GG) hydrogel must demonstrate a number of critical qualities—low viscosity, degradability, desirable mechanical properties, anti-swelling properties, and biocompatibility—in order to be regarded as suitable for retinal pigment epithelium (RPE) regeneration. In this study, we investigated whether the application of an eggshell membrane (ESM) to a GG hydrogel improved these critical attributes. The crosslinking of the ESM/GG hydrogels was most effectively reduced, when a 4 w/v% ESM was used, leading to a 40% less viscosity and a 30% higher degradation efficiency than a pure GG hydrogel. The compressive moduli of the ESM/GG hydrogels were maintained, as the smaller pores formed by the addition of the ESM compensated for the slightly weakened mechanical properties of the ESM/GG hydrogels. Meanwhile, due to the relatively low hydrophilicity of ESM, a 4 w/v% ESM enabled an ESM/GG hydrogel to swell 30% less than a pure GG hydrogel. Finally, the similarity in components between the ESM and RPE cells facilitated the proliferation of the latter without any significant cytotoxicity.

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Feasibility and performance of a thin-film composite seawater reverse osmosis membrane fabricated on a highly porous microstructured support

Cited by 41 publications

References 67 publications

Ultrapermeable nanofiltration membranes with tunable selectivity fabricated with polyaniline nanofibers

Ultrapermeable nanofiltration membranes with tunable selectivity fabricated with polyaniline nanofibers

Effect of Additives during Interfacial Polymerization Reaction for Fabrication of Organic Solvent Nanofiltration (OSN) Membranes

Eggshell Membrane/Gellan Gum Composite Hydrogels with Increased Degradability, Biocompatibility, and Anti-Swelling Properties for Effective Regeneration of Retinal Pigment Epithelium

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