Fabrication of novel PPSU/ZSM-5 ultrafiltration hollow fiber membranes for separation of proteins and hazardous reactive dyes

Nayak, M. C.; Isloor, Arun M.; Moslehyani, Ali; Ismail, Norafiqah; Ismail, Ahmad Fauzi

doi:10.1016/j.jtice.2017.11.019

Cited by 51 publications

(14 citation statements)

References 54 publications

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“…The water content of the as-prepared pristine and composite membranes (2 cm 2 ) was determined by dipping the membranes in distilled water for 24 h. The wet membranes weight was noted after removing excess water using blotting paper. Then the wet membranes were dried at 60 ˚C till constant weight and dry weights were determined (Nayak et al 2017, Nayak et al 2018). The equation for percentage water content was calculated as follows, %Wateruptake = Ww − Wd Ww X100 ( ) Where 'W w ' and 'W d ' are the wet weight and the dry weight of the membrane respectively.…”

Section: Membrane Characterizationmentioning

confidence: 99%

One-step synthesis and characterization of hydrophilic polymer microspheresimmobilized with polyphenylsulfone ultrafiltration membranes for protein rejection application

Rajashekhara

Isloor

Ismail

2022

Preprint

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An effective single-step polymerization was followed for the synthesis of hydrophilicP(MBAm-co-MAA) microspheres. The distillation-precipitation polymerization (DPP) technique utilized N,N՛- methylenebis(acrylamide) (MBAm) as a crosslinker, methacrylic acid (MAA) as a monomer, solvent acetonitrile (ACN) and an initiator 2,2-azobisisobutyronitrile (AIBN) for synthesizing the P(MBAm-co-MAA) polymer particle.Simultaneously, in the reaction system, the polymer particles were formed as a precipitateand acetonitrile from the reaction was distilled out. The reaction takes placewithoutaddition of any surfactant or stabilizers. The morphology of the resultant microspheres, which were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), attenuated total reflectance fourier-transform infrared spectroscopy (ATR-FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA)and Brunauer-Emmett-Teller (BET) analysis.These microspheres were used as an additive for improving the performance of the fabricated membrane. The modified membranes showed increased hydrophilicity, porosity and water uptake.Membranes also exhibitedimproved permeability (63.7 Lh-1m-2bar-1), flux recovery ratio (80.7%)andthe highest protein rejection values of 94.8% (bovine serum albumin), 68.4% (pepsin), 86.9% (egg albumin) were observed. Therefore, the as-prepared membrane can potentially beusedfor protein removal from industrial wastewater.

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Section: Membrane Characterizationmentioning

confidence: 99%

One-step synthesis and characterization of hydrophilic polymer microspheresimmobilized with polyphenylsulfone ultrafiltration membranes for protein rejection application

Rajashekhara

Isloor

Ismail

2022

Preprint

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“…These advantages result in using PPSU membranes in ultrafiltration [ 7 , 8 , 9 ], nanofiltration [ 10 , 11 , 12 , 13 ], forward osmosis [ 14 ], pervaporation [ 15 , 16 , 17 ], and gas separation [ 16 , 18 , 19 ], in membrane contactors [ 20 ] and proton exchange membrane fuel cells [ 21 ]. PPSU membranes were developed for water treatment [ 22 , 23 , 24 , 25 ], water desalination [ 14 , 26 ], for dye removal [ 3 , 21 , 27 , 28 , 29 ], oil in water separation [ 30 , 31 , 32 ], water purification from natural organic matter (NOM) [ 33 ], removal of heavy metal ions [ 10 , 34 ], CO 2 /CH 4 gas separation [ 18 ], removal of free fatty acid from crude palm oil [ 35 ], removal of kinetic hydrate inhibitor from water [ 36 , 37 ], the separation of biobutanol from ABE mixtures [ 5 ] and cumene from water via pervaporation [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Development of High Flux Nanocomposite Polyphenylsulfone/Oxidized Multiwalled Carbon Nanotubes Membranes for Ultrafiltration Using the Systems with Critical Solution Temperatures

2022

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The study deals with the investigation of the effect of the modification of polyphenylsulfone (PPSU) flat sheet membranes for ultrafiltration using oxidized multiwalled carbon nanotubes (O-MWCNT) in order to enhance membrane permeability and antifouling performance. The effect of O-MWCNT loading to the PPSU-polyethylene glycol (PEG-20,000, Mn = 20,000 g·mol−1)-polyvinylpyrrolidone (PVP K-30, Mn = 40,000 g·mol−1)-N-methy-2-pyrrolidinone (NMP) colloid systems on the phase state and viscosity was studied. It was found that PPSU-PEG-20,000-PVP K-30-O-MWCNT-NMP colloid systems feature a gel point (T = 35–37 °C) and demixing temperature (T = 127–129 °C) at which two bulk phases are formed and a polymer system delaminates. According to the study of the phase state and viscosity of these colloid systems, a method for the preparation of high flux PPSU membranes is proposed which includes processing of the casting solution at the temperature higher than gel point (40 °C) and using a coagulation bath temperature lower than gel point (25 °C) or lower than demixing temperature (40 °C and 70 °C). Membrane structure, topology and hydrophilic-hydrophobic balance were investigated by scanning electron microscopy (SEM), atomic force microscopy (AFM) and water contact angle measurements. The effect of coagulation bath temperature and O-MWCNT concentration on the membrane separation and antifouling performance in ultrafiltration of human serum albumin and humic acids solutions was studied. It was found that the modification of PPSU ultrafiltration membranes by O-MWCNTs yielded the formation of a thinner selective layer and hydrophilization of the membrane surface (water contact angle decreased from 53–56° for the reference PPSU membrane down to 33° for the nanocomposite membrane with the addition of 0.19 wt.% O-MWCNT). These changes resulted in the increase in membrane flux (from 203–605 L·m−2·h−1 at transmembrane pressure of 0.1 MPa for the reference membrane up to 512–983 L·m−2·h−1 for nanocomposite membrane with the addition of 0.19 wt.% O-MWCNT depending on coagulation bath temperature) which significantly surpasses the performance of PPSU ultrafiltration membranes reported to date while maintaining a high level of human serum albumin rejection (83–92%). It was revealed that nanocomposite membrane demonstrated better antifouling performance (the flux recovery ratio increased from 47% for the reference PPSU membrane up to 62% for the nanocomposite membrane) and higher total organic carbon removal compared to the reference PPSU membrane in humic acids solution ultrafiltration.

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“…In contrast, polyphenylsulfone (PPSU) is a commercially available amorphous high-performance thermoplastic, it has better impact resistance and chemical stability than polysulfone (PSU) and polyimide. Thus, PPSU has been extensively studied over the past several years for gas separation [ 40 , 41 ], organic solvent nanofiltration [ 42 , 43 , 44 ], fuel cell [ 45 , 46 ], and water reuse [ 47 , 48 , 49 , 50 ]. PPSU is part of the polysulfone family and polysulfone has been used for the early development of gas separation membranes by Air Products with the aid of silicone rubber coating [ 51 ], which is now explored in this work for its feasibility of structural modification to enhance gas separation.…”

Section: Introductionmentioning

confidence: 99%

Polyphenylsulfone (PPSU)-Based Copolymeric Membranes: Effects of Chemical Structure and Content on Gas Permeation and Separation

Feng

Liang

et al. 2021

Polymers

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Although various polymer membrane materials have been applied to gas separation, there is a trade-off relationship between permeability and selectivity, limiting their wider applications. In this paper, the relationship between the gas permeation behavior of polyphenylsulfone(PPSU)-based materials and their chemical structure for gas separation has been systematically investigated. A PPSU homopolymer and three kinds of 3,3′,5,5′-tetramethyl-4,4′-biphenol (TMBP)-based polyphenylsulfone (TMPPSf) copolymers were synthesized by controlling the TMBP content. As the TMPPSf content increases, the inter-molecular chain distance (or d-spacing value) increases. Data from positron annihilation life-time spectroscopy (PALS) indicate the copolymer with a higher TMPPSf content has a larger fractional free volume (FFV). The logarithm of their O2, N2, CO2, and CH4 permeability was found to increase linearly with an increase in TMPPSf content but decrease linearly with increasing 1/FFV. The enhanced permeability results from the increases in both sorption coefficient and gas diffusivity of copolymers. Interestingly, the gas permeability increases while the selectivity stays stable due to the presence of methyl groups in TMPPSf, which not only increases the free volume but also rigidifies the polymer chains. This study may provide a new strategy to break the trade-off law and increase the permeability of polymer materials largely.

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Fabrication of novel PPSU/ZSM-5 ultrafiltration hollow fiber membranes for separation of proteins and hazardous reactive dyes

Cited by 51 publications

References 54 publications

One-step synthesis and characterization of hydrophilic polymer microspheresimmobilized with polyphenylsulfone ultrafiltration membranes for protein rejection application

One-step synthesis and characterization of hydrophilic polymer microspheresimmobilized with polyphenylsulfone ultrafiltration membranes for protein rejection application

Development of High Flux Nanocomposite Polyphenylsulfone/Oxidized Multiwalled Carbon Nanotubes Membranes for Ultrafiltration Using the Systems with Critical Solution Temperatures

Polyphenylsulfone (PPSU)-Based Copolymeric Membranes: Effects of Chemical Structure and Content on Gas Permeation and Separation

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