Poly(acrylonitrile) based ultrafiltration membranes: Optimization of preparation parameters

Lohokare, H. R.; Bhole, Yogesh; Taralkar, S. V.; Kharul, Ulhas K.

doi:10.1016/j.desal.2011.04.009

Cited by 53 publications

(17 citation statements)

References 32 publications

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“…Inorganic additives such as lyotrophic salts are favored as pore formers, as they influence solvent properties and interact with base polymer. Among the inorganic additives, zinc chloride (ZnCl 2 ) is widely used as a pore former in various polymer membrane fabrications . Panda and De studied the combined effect of ZnCl 2 and PEG on the modification of polysulfone membrane for desalination applications .…”

Section: Introductionmentioning

confidence: 99%

“…Among the inorganic additives, zinc chloride (ZnCl 2 ) is widely used as a pore former in various polymer membrane fabrications. 13,14 Panda and De studied the combined effect of ZnCl 2 and PEG on the modification of polysulfone membrane for desalination applications. 15 It was found that the pore formers have good miscible properties with polysulfone membrane and aid in the retention of dye and salts.…”

Section: Introductionmentioning

confidence: 99%

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Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO₂ incorporated PES mixed matrix membranes

Yogarathinam

Arthanareeswaran

Ismail

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND Extracellular polymeric substances and microalgae stimulate membrane fouling during harvesting. The objective of the study was to compare the effect of pore formers on TiO2 embedded polyethersulfone mixed matrix membranes (MMMs) to harvest Coelastrella sp. FI69. The study experimented with hydrophilic additive (polyethylene glycol), polyelectrolyte additive (polyethylenimine), inorganic additive (zinc chloride) and charged polymer (sulfonated polyetherether ketone (SPEEK)) as pore formers. RESULTS It was found that SPEEK/TiO2 combination enhanced the hydrophilic property of the PES membrane surface. Also, contact angle value (55.22°) was decreased by 1.38 times that of a neat PES (76.63°) membrane. Morphology studies indicated that the TiO2 particles dispersed well in the PES membrane matrix along with pore formers. The existence of super hydrophilic TiO2 supported the restriction of microalgae cell attachment on the membrane surface. The filtration of alginic acid sodium solution analysis showed that PES/SPEEK/TiO2 and PES/PEG/TiO2 membranes support higher flux with minimal fouling percentage. Microalgae filtration studies indicated that synergistic effect of both SPEEK and TiO2 on PES membrane exhibited higher water recovery percentage of 96% and equilibrium flux of 66 L m‐2 h‐1. CONCLUSION Fouling propensity is significantly reduced in modified membranes. Future research on scale‐up of membranes for further microalgae dewatering applications is recommended. © 2017 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO₂ incorporated PES mixed matrix membranes

Yogarathinam

Arthanareeswaran

Ismail

et al. 2018

J of Chemical Tech & Biotech

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“…Although a number of studies report the viability of using UF membrane made of only PAN polymer for aqueous solution separation processes, the critical issue -fouling problem is the main challenge of the sustainable operation of PAN-based membrane in long run [18,19]. Therefore, incorporating PAN-based membrane with amphiphilic copolymer additive is helpful to improve membrane anti-fouling performance and prevent flux decline [15].…”

Section: Introductionmentioning

confidence: 98%

Improving water permeability and anti-fouling property of polyacrylonitrile-based hollow fiber ultrafiltration membranes by surface modification with polyacrylonitrile-g-poly(vinyl alcohol) graft copolymer

Nazri

Lau

Ismail

2015

Korean J. Chem. Eng.

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The effect of polyacrylonitrile-g-poly (vinyl alcohol) (PAN-g-PVA) copolymer additive on the properties of PAN-based hollow fiber UF membranes was studied. The resulting hollow fiber membranes were characterized with respect to structural morphology, surface properties, and proteins rejection in order to investigate the impact of PAN-g-PVA copolymer composition (presented at different PAN : PAN-g-PVA ratio) in the UF membrane on the separation and antifouling properties. Results showed that the hollow fiber membrane prepared from the highest composition of PAN-g-PVA copolymer (PAN : PAN-g-PVA 80 : 20) was able to produce pure water flux as high as 297 L/m 2 ·hr in comparison to 41 L/m 2 ·hr reported in control PAN membrane when tested at 1 bar. Fouling experiments performed using bovine serum albumin (BSA), albumin from chicken egg (CE) and trypsin indicated that the blend membranes with higher surface coverage of hydrophilic PVA (34-60%) were more excellent in minimizing protein fouling, which might be correlated with the formation of hydrophilic PVA layer on their surface. Although increase in membrane hydrophilicity upon PAN-g-PVA copolymer incorporation might be the main reason contributing to improved membrane antifouling properties, the changes in membrane surface roughness and pore size could not be completely ruled out to influence membrane anti-fouling resistance during protein filtration.

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“…For the separation of organic media, nanofiltration composite membranes resistant to organic solvents (acetone permeability of up to 14 kg/(m 2 h bar) [34]) have been developed; PAN membranes modified with hydrazine hydrate exhibit a high resistance to alkaline media [35]; the exposure of membranes to IR radiation makes PAN insoluble in organic solvents [36,37]. Earlier, it was shown that a correct choice of a porous substrate and an optimization of the substrate synthesis are particularly important for designing high-performance gas separation membranes [38].…”

Section: Introductionmentioning

confidence: 99%

Ultrafiltration Membranes Based on Various Acrylonitrile Copolymers

Matveev

Plisko

Волков

et al. 2019

Membr. Membr. Technol.

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The structure and properties of ultrafiltration membranes synthesized from bicomponent solutions in N,N-dimethylformamide using five commercial acrylonitrile copolymers of various compositions and molecular masses have been studied. The molecular mass characteristics of the copolymers (M w , M w /M n) have been determined; the viscosity properties of dilute and concentrated solutions have been studied. It has been shown that depending on the chemical composition and molecular mass of the copolymer, the concentration dependence of the water flux is different: for copolymers with a molecular mass of M w of 76000-81000 g/mol, with an increase in the copolymer concentration in solution from 12 to 16%, the water flux of the membranes decreases from 300-500 to 40-150 L/(m 2 h) depending on the copolymer composition. For samples with a higher molecular mass (M w = 99 000 and 107000 g/mol), the water flux of the membranes hardly depends on the copolymer concentration in the casting solution; it is 150 and 75 L/(m 2 h), respectively. The rejection factor of the membranes with a molecular mass of 40000 g/mol for polyvinylpyrrolidone increases with increasing copolymer concentration in the casting solution regardless of the chemical composition and molecular mass of the copolymer. Scanning electron microscopy studies of the membrane structure have shown that membranes synthesized from copolymers with a higher molecular mass have a denser structure and a thicker selective layer than the respective parameters of membranes synthesized from acrylonitrile copolymers with a lower molecular mass, which are characterized by the presence of large macrovoids in the membrane matrix. These differences in the membrane structure are attributed to different viscosities of the casting solutions at identical copolymer concentrations.

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Poly(acrylonitrile) based ultrafiltration membranes: Optimization of preparation parameters

Cited by 53 publications

References 32 publications

Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO₂ incorporated PES mixed matrix membranes

Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO₂ incorporated PES mixed matrix membranes

Improving water permeability and anti-fouling property of polyacrylonitrile-based hollow fiber ultrafiltration membranes by surface modification with polyacrylonitrile-g-poly(vinyl alcohol) graft copolymer

Ultrafiltration Membranes Based on Various Acrylonitrile Copolymers

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Poly(acrylonitrile) based ultrafiltration membranes: Optimization of preparation parameters

Cited by 53 publications

References 32 publications

Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO2 incorporated PES mixed matrix membranes

Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO2 incorporated PES mixed matrix membranes

Improving water permeability and anti-fouling property of polyacrylonitrile-based hollow fiber ultrafiltration membranes by surface modification with polyacrylonitrile-g-poly(vinyl alcohol) graft copolymer

Ultrafiltration Membranes Based on Various Acrylonitrile Copolymers

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Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO₂ incorporated PES mixed matrix membranes

Harvesting of microalgae Coelastrella sp. FI69 using pore former induced TiO₂ incorporated PES mixed matrix membranes