Preparation and characterization of poly (ethersulfone) nanofiltration membranes for amoxicillin removal from contaminated water

Omidvar, Maryam; Mousavi, Seyed Mahmoud; Soltanieh, Mohammad; Safekordi, Ali Akbar

doi:10.1186/2052-336x-12-18

Cited by 41 publications

(17 citation statements)

References 30 publications

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“…Then it achieved a maximum at 0.4 wt % and finally experienced a sharp drop with further additions of n ‐C 6 e.g., 0.6 wt %. PWF is directly correlated with the skin layer pore size, surface porosity, as well as sublayer morphology and porosity; therefore, the PWF results were in a good agreement with the above parameters as reported in Table . The same similarity was observed for n ‐C 10 and n ‐C 14 additives between PWF and solute rejection results.…”

Section: Resultssupporting

confidence: 74%

The impact of nonpolar coagulation bath‐immiscible liquid additives on the polyethersulfone membranes structure and performance

Teimoori

Hashemifard

Ismail

et al. 2016

J of Applied Polymer Sci

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In this study, the impact of several normal alkanes as additives on the structural parameters and the morphologies of flat sheet PES membranes were investigated. The asymmetric membranes were fabricated by phase inversion method. Also n-hexane, n-decane, and n-tetradecane were used as additives. The effects of different concentrations of these additives were investigated by producing the ternary phase diagrams. Further the membranes were characterized by means of solute transport test, contact angle, pure water flux, porosity measurement, and scanning electronic microscopy. It was expected that two distinct phase inversions to be occurred since both the polymer and the additives were insoluble in the coagulation bath. Observations revealed that n-hexane and n-decane were less effective compared with n-tetradecane in terms of binodal shifting toward PES/NMP axis. In conclusion, it was revealed that the coagulation bath immiscible-liquid additives had a major impact on the membranes structure in order to achieve the enhanced properties.

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Section: Resultssupporting

confidence: 74%

The impact of nonpolar coagulation bath‐immiscible liquid additives on the polyethersulfone membranes structure and performance

Teimoori

Hashemifard

Ismail

et al. 2016

J of Applied Polymer Sci

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“…This can be explained by Hansen solubility parameters, such as faster demixing rate in MS-1 which resulted in porous structure, hence hydrophilicity, whereas, in MS-2, the P-S value dropped to 2.68 MPa 1/2 . This resulted in relatively less thermodynamically stable solution and better demixing leading to porosity on surface [53].…”

Section: Polymer Solventmentioning

confidence: 99%

Polymer Concentration and Solvent Variation Correlation with the Morphology and Water Filtration Analysis of Polyether Sulfone Microfiltration Membrane

Alvi¹,

Khalid²,

Ahmad

et al. 2019

Advances in Polymer Technology

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Microfiltration flat sheet membranes of polyether sulfone (PES) were fabricated by incorporating varying concentrations of polymer and investigated the influence of substituting solvents. The membranes were prepared via immersion precipitation method. Different solvents that included NMP (N-methyl-2-pyrrolidone), DMF (dimethylformamide), and THF (tetrahydrofuran) were used to analyse their effect on the performance and morphology of the prepared membranes. Two different coagulation bath temperatures were used to investigate the kinetics of membrane formation and subsequent effect on membrane performance. The maximum water flux of 141 ml/cm2.h was observed using 21% of PES concentration in NMP + THF cosolvent system. The highest tensile strength of 29.15 MPa was observed using membrane prepared with 21% PES concentration in NMP as solvent and coagulation bath temperature of 25°C. The highest hydraulic membrane resistance was reported for membrane prepared with 21% PES concentration in NMP as solvent. Moreover, the lowest contact angle of 67° was observed for membrane prepared with 15% of PES concentration in NMP as solvent with coagulation bath temperature of 28°C. Furthermore, the Hansen solubility parameter was used to study the effect on the thermodynamics of membrane formation and found to be in good correlation with experimental observation and approach in the present work.

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“…Many investigations have revealed that increasing the membrane surface hydrophilicity can effectively reduce the membrane fouling [ 9 , 11 ]. Therefore, efforts have focused on increasing PES hydrophilicity by chemical or physical modifications such as UV irradiation [ 12 ], addition of additive [ 9 , 13 – 15 ], plasma treatment [ 16 , 17 ], and so on. Addition of surfactant additives to the casting solutions can influence morphology and performance of membranes.…”

Section: Introductionmentioning

confidence: 99%

Preparation of hydrophilic nanofiltration membranes for removal of pharmaceuticals from water

Omidvar

Soltanieh

Mousavi

et al. 2015

J Environ Health Sci Engineer

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Asymmetric polyethersulfone (PES) nanofiltration membranes were prepared via phase inversion technique. PES polymer, Brij 58 as surfactant additive, polyvinylpyrrolidone (PVP) as pore former and 1-methyl-2-pyrrolidone (NMP) as solvent were used in preparation of the casting solutions. Distillated water was used as the gelation media. The scanning electron microscopy (SEM) images and measurements of contact angle (CA) and zeta potential were used to characterize the prepared membranes. Also performance of the membranes was examined by determining the pure water flux (PWF) and pharmaceuticals rejection. The addition of Brij 58 to the casting solution resulted in formation of the membranes with higher thickness and more porous structure in the sublayer in comparison with the net PES membrane. The surface hydrophilicity of the membranes was remarkably enhanced via the presence of Brij 58 in the casting solution, so that, the contact angel diminished from 74.7° to 28.3° with adding 6 wt. % of Brij 58 to the casting solution. The addition of Brij 58 to the casting solution resulted in formation of the membranes with superior PWF and higher rejection of amoxicillin and ceftriaxone in comparison with the pure PES membrane.

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Preparation and characterization of poly (ethersulfone) nanofiltration membranes for amoxicillin removal from contaminated water

Cited by 41 publications

References 30 publications

The impact of nonpolar coagulation bath‐immiscible liquid additives on the polyethersulfone membranes structure and performance

The impact of nonpolar coagulation bath‐immiscible liquid additives on the polyethersulfone membranes structure and performance

Polymer Concentration and Solvent Variation Correlation with the Morphology and Water Filtration Analysis of Polyether Sulfone Microfiltration Membrane

Preparation of hydrophilic nanofiltration membranes for removal of pharmaceuticals from water

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