A review on membrane fabrication: Structure, properties and performance relationship

Lalia, Boor Singh; Kochkodan, Victor; Hashaikeh, Raed; Hilal, Nidal

doi:10.1016/j.desal.2013.06.016

Cited by 869 publications

(454 citation statements)

References 190 publications

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“…Also, these metal nanoparticles had strong interactions with PES/NMP, which was reflected in a significant increase in viscosity (data not shown) and was confirmed by other authors, who worked with incorporating nano-ZnO in PES structures [46,47]. These effects caused a delay in the precipitation of the polymer (a decrease in the diffusion rate of water into the polymer film) and then, the existing macrovoids in the synthesized membranes were partially suppressed due to the delayed liquid-liquid demixing [11,31]. Irrespective of the hydrophobicity of both metal nanoparticles, the changes in the phase border curves (binodal curves) is observed in the miscibility gap, where the critical point was moved far from the polymer-solvent axis in comparison with the system without nanoparticles and therefore, the homogeneous region was enlarged and more water was needed for the precipitation of PES in these (PES + metal nanoparticles)/NMP/water systems.…”

Section: Morphological Studysupporting

confidence: 70%

“…Subsequently, a predetermined amount of PES (20 wt%) was gradually added with continuous stirring at the same conditions for at least 48 h until the polymer was completely dissolved. The polymer concentration used in this study was selected according to previous studies about preparation and modification of polymeric membranes [12,31], whereas these additive concentrations were selected to examine the effect of ultra-low concentrations of metal nanoparticles on the membrane morphology and performance. After obtaining a homogeneous solution, the air bubbles that might be trapped in the polymer solution were removed by vacuum pump (40 ºC for 15 min).…”

Section: Membrane Preparationmentioning

confidence: 99%

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Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes

García-Ivars

Iborra–Clar

Alcaina–Miranda

et al. 2015

Journal of Membrane Science

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ElsevierGarcía Ivars, J.; Iborra Clar, MI.; Alcaina Miranda, MI.; Van Der Bruggen, B. (2015). Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes. ABSTRACTInorganic nanoparticles have been applied as additive in membrane synthesis for improving different properties from the base polymer such as hydrophilicity, fouling resistance or permselectivity. To investigate the changes caused by the presence of the inorganic nanoparticles in the formation of the membrane structure, two different metallic compounds with opposite hydrophilicity were used as additives: hydrophilic zinc oxide (ZnO) and hydrophobic tungsten disulphide (WS 2 ). For this purpose, the effect of these metal nanoparticles at ultra-low concentrations (0.05 and 0.25 wt% metal nanoparticles/polymer ratio) in the preparation of flat-sheet membranes based on polyethersulphone (PES) by immersion-precipitation method was investigated. Nmethyl-2-pyrrolidone (NMP) was used as solvent. The influence of both metal nanoparticles on the characteristics and permselective properties of PES membranes was studied with microscopic observations, contact angle measurements, and filtration experiments. Although the incorporation of metal nanoparticles could turn the system into thermodynamically unstable, the demixing process during formation of membranes was slightly delayed, suppressing the macrovoid formation (remarkably using WS 2 ).Regardless the nature of the metal nanoparticles, results showed an overall improvement in membrane hydrophilicity and permselectivity by adding metal nanoparticles compared to the control PES membrane, demonstrating that the behaviour of both metal nanoparticles at ultra-low concentrations was very similar.

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Section: Morphological Studysupporting

confidence: 70%

Section: Membrane Preparationmentioning

confidence: 99%

Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes

García-Ivars

Iborra–Clar

Alcaina–Miranda

et al. 2015

Journal of Membrane Science

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“…For long term application, those problems may contribute to the operational troubles and membrane failure [17,18]. Therefore, modification of UF membrane is required to improve selectivity while maintaining high productivity and has low-fouling properties [19,20].…”

Section: ''""mentioning

confidence: 99%

Modified Polysulfone Ultrafiltration Membrane for Humic Acid Removal During Peat Water Treatment

Aryanti

Noviyani

Kurnia

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this research, UF membrane was prepared by blending polysulfone (PSf) in DMAc with the addition of PEG400 and low concentration of acetone as additives. The effect of PSf/PEG400 and polymer/solvent ratio on the performance of PSf membrane was investigated during two hours of peat water filtration. The results showed that the increase of ratio PSF/PEG400 from 1:1 to 1:2.5 improved the membrane hydrophilicity. It was indicated by a decrease of water contact angle from 62 o to 33 o and increased water content in membrane structure from 65 to 74,5%. In addition, the pure water flux also increased up to 200 times. A stable flux is achieved when the ratio PSf/PEG is 1:2 and resulted in 84% rejection of humic acid. The increase of polymer concentration in the membrane solution reduced the pure water flux but increased the rejection of humic acid. Higher polymer concentration in membrane solution reduced fouling tendency towards the membrane surface. It showed that flux decline was reduced from 60% to 40% when the ratio of polymer/solvent concentration was changed from 40/60 to 50/50.

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“…using water as the non-solvent [7,18]. The incorporation of pluronic at a specific ratio to the main polymer was reported [10,11,15] where the main polymer became the backbone of the membrane structure and pluronic acted as the co-polymer.…”

Section: Introductionmentioning

confidence: 99%

Polyethersulfone/Pluronic F127 Blended Nanofiltration Membranes for Xylitol Purification

2017

MJAS

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Obtaining high purity of xylitol is a stone corner in medicine industries. Many conventional techniques (crystallization and adsorption) were used for xylitol purification from fermentation media. Recently, membrane technology received a great attention due to its high performance in xylitol purification. Among renowned copolymers used for polymer blending to produce membranes, pluronic is receiving much attention due to its strong hydrophilic characteristic and could work as pore former and surface modifier. Polyethersulfone (PES) polymer has been reportedly used for polymer blending as it possesses mechanical and chemical stabilities. Therefore, this work demonstrates the preparation of nanofiltration (NF) membrane using: (1) PES and (2) PES blended with 1.71% and 5% of Pluronic (F127), via phase inversion method. All fabricated membranes were subjected to investigations such as contact angle for hydrophilicity and water and solution flux for membrane performance. The findings showed increasing in water flux from 24.6 L/m 2 .h to 70.2 L/m 2 .h as 5% of Pluronic added. Further, the hydrophilicity improved from 80.1 ± 1.93 o to 72 ±0.3 o and 67.6 ± 0.72 o when 1.71 and 5% of Pluronic F127 added respectively. Therefore, the addition of Pluronic f127 has a great impact on PES membrane for xylitol permeation.Keywords: polyethersulfone, pluronic F127, xylitol, NF membrane, purification Abstrak Memperoleh ketulenan yang tinggi bagi xilitol merupakan salah satu batu loncatan di dalam industri perubatan. Terdapat banyak teknik konvensional (penghabluran dan penjerapan) yang telah digunakan untuk penulenan xilitol daripada media penapaian. Baru-baru ini, teknologi membran banyak menarik perhatian dengan prestasinya yang bagus dalam penulenan xilitol. Antara kopolimer yang sering digunakan untuk campuran polimer dalam penghasilan membran adalah pluronik yang telah menerima perhatian kerana sifat hidrofiliknya dan boleh membantu dalam pembentukan liang serta pengubahsuai permukaan membran. Polimer polietersulfon (PES) telah dilaporkan digunakan untuk polimer campuran kerana ia mempunyai kestabilan mekanikal dan kimia. Oleh itu, kerja ini menunjukkan penyediaan membran penurasan-nano (NF) menggunakan: (1) PES dan (2) PES dicampur dengan 1.71% dan 5% Pluronik (f127), melalui kaedah fasa songsangan. Kesemua membran yang dihasilkan dicirikan menggunakan sudut sentuhan untuk sifat hidrofilik dan fluks air serta larutan bagi prestasi membran. Hasil kajian menunjukkan peningkatan dalam fluks air daripada 24.6 L/m 2 .h kepada 70.2 L/m 2 .h apabila 5% Pluronik F127 ditambah. Selanjutnya, sifat hidrofilik membran bertambah baik iaitu daripada 80.1 ± 1.93 o kepada 72 ± 0.3 o dan 67.6 ± 0.72 o apabila 1.71 dan 5% Pluronik F127 ditambah. Didapati penambahan Pluronik F127 memberi kesan yang besar ke atas membran PES untuk penyerapan xilitol.

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A review on membrane fabrication: Structure, properties and performance relationship

Cited by 869 publications

References 190 publications

Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes

Comparison between hydrophilic and hydrophobic metal nanoparticles on the phase separation phenomena during formation of asymmetric polyethersulphone membranes

Modified Polysulfone Ultrafiltration Membrane for Humic Acid Removal During Peat Water Treatment

Polyethersulfone/Pluronic F127 Blended Nanofiltration Membranes for Xylitol Purification

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