Enhancement strategy of polyethersulfone (PES) membrane by introducing pluronic F127/graphene oxide and phytic acid/graphene oxide blended additives: preparation, characterization and wastewater filtration assessment

Kouhestani, Fateme; Torangi, Mohamad Ali; Motavalizadehkakhky, Alireza; Karazhyan, Reza; Zhiani, Rahele

doi:10.5004/dwt.2019.24769

Cited by 11 publications

(5 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In all the membranes, the adsorption peaks characteristic to PES are observed at 710, 820, 1105, 1153, 1239, 1581, 1324, 1400, and 1477 cm −1 . These have been assigned to the CH 2 bond, CH stretching, CO stretching, SO stretching, aromatic ether stretching, benzene ring stretching, aromatic skeletal vibrations, and CH stretching, respectively 58–60 . The M1 blend spectra patterns appeared to be the same to those of M0 likely because of the similarity in some of chemical groups that make up their structures, with peaks between 1672 and 550 cm −1 possibly masking some characteristic peaks of PLA in that region.…”

Section: Resultsmentioning

confidence: 94%

“…These have been assigned to the CH 2 bond, C H stretching, C O stretching, S O stretching, aromatic ether stretching, benzene ring stretching, aromatic skeletal vibrations, and C H stretching, respectively. [58][59][60] The M1 blend spectra patterns appeared to be the same to those of M0 likely because of the similarity in some of chemical groups that make up their structures, with peaks between 1672 and 550 cm À1 possibly masking some characteristic peaks of PLA in that region. Peaks at 1745, 1452, and 1080 cm À1 have been assigned to C O stretching, C H stretching, and C O C stretching of PLA respectively, while peaks between 3000 and 3600 cm À1 are indicative of O H stretch.…”

Section: Ftir Analysismentioning

confidence: 81%

See 1 more Smart Citation

Development of polyethersulfone/polylactic acid‐blended nanocellulose membranes for enhanced removal of methylene blue dye

Moyo,

Mahlangu,

Vilakati

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

Herein, adsorptive polyethersulfone/polylactic acid (PES/PLA) blends membranes with systematic concentrations of cellulose nanofibers (CNFs) (0.5–2.5 wt%) were developed via a modified phase inversion process for the enhanced removal of cationic methylene blue (MB) dye. To the best of our knowledge, this is the first time that such adsorptive membranes have been produced for potential use in wastewater treatment. The fabricated membranes were characterized for surface and cross‐sectional morphology (scanning electron microscope), surface roughness (atomic force microscope), functionality (Fourier‐transform infrared spectroscopy), thermal stability (thermal gravimetric analysis), wettability (contact angle measurements), antifouling behavior (flux recovery studies), and dye adsorption and reusability (adsorption and desorption tests). CNF incorporated membranes showed improved wetting properties, with contact angle decreasing from 76° in the pristine membranes to 48° in 2.5 wt% PES/PLA membranes. The membrane bulk porosity increased from 60.3% to 79.23%, while the pure water flux increased from 210.8 to 399.12 Lm−2 h−1. At optimal conditions, CNF‐modified membranes removed >98% of MB compared with 8% removal by the pristine membranes. After five cycles of adsorption and desorption, the membrane with 2 wt% CNFs achieved over 70% dye removal showing excellent reusability properties. Adsorption followed pseudo‐second‐order and Freundlich models. The adsorption was attributed to electrostatic interactions between the negatively charged membrane surfaces and the positively charged dye molecules as well as through hydrogen bonding. Therefore, this work revealed that CNF‐modified PES/PLA membranes can be used as adsorbents for the enhanced removal of organic pollutants in water treatment applications.

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Ftir Analysismentioning

confidence: 81%

Development of polyethersulfone/polylactic acid‐blended nanocellulose membranes for enhanced removal of methylene blue dye

Moyo,

Mahlangu,

Vilakati

et al. 2023

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…Figure1 shows the FTIR spectrum of pristine and functionalized GO nanoparticles. The spectrum of pristine GO exhibits peaks at 1085 cm -1 , 1637 cm -1 , 1734 cm -1 , and 3425 cm -1 , corresponding to C-O stretching, C=C stretching, C=O stretching, and O-H stretching, respectively [13]. Gly-GO and diGly-GO share similar characteristic peaks with the pristine GO, but with the peaks showing increased intensity.…”

Section: Characterization Of Graphene Oxide and Its Derivativesmentioning

confidence: 94%

Development of zwitterion-functionalized graphene oxide/polyethersulfone nanocomposite membrane and fouling evaluation using solutes of varying charges

Soh,

Chang,

Sum

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

This study explores the functionalization of polyethersulfone (PES) ultrafiltration (UF) membranes using zwitterion-functionalized graphene oxide (GO) and assesses their interactions with solutes of different charges, both neutral and anionic. Initially, PES nanocomposite membranes were synthesized, incorporating varying dosages (ranging from 0-1 % (w/w)) of glycine-functionalized graphene oxide (Gly/GO) and diglycine-functionalized graphene oxide (diGly/GO) through a direct blending method. The physicochemical properties, including hydrophilicity, surface morphology, and porosity of these membranes were characterized using sessile-drop contact angle, tabletop scanning electron microscopy (SEM), and gravimetric methods, respectively. Subsequently, the antifouling performance of these synthesized membranes was assessed by exposing them to a solution containing sucrose as a neutral model foulant and humic acid as an anionic foulant. The incorporation of zwitterion-functionalized graphene oxide nanoparticles improved the surface wettability of the nanocomposite membrane, enhancing its resistance to sucrose fouling. This was supported by a reduction in flux declination ratio (e.g., 40.6 % for pristine PES, 29.7 % for 1.0 % (w/w) Gly/GO PES, and 33.1 % for 1.0 % (w/w) diGly/GO PES) and an increase in flux recovery ratio (67.2 % for pristine PES, 79.7 % for 1.0 % (w/w) Gly/GO PES, and 80.0% for 1.0 % (w/w) diGly/GO PES). The improvement in antifouling characteristics is attributed to the formation of a hydration layer on the membrane surface, which inhibits sucrose deposition. However, zwitterion-functionalized PES nanocomposite membranes displayed a higher affinity for anionic humic acid, resulting in a substantial flux decline and a lower flux recovery ratio. Overall, this research provides insights into the roles of surface wettability and the charge interactions between solutes and the membrane surface, both of which are crucial factors in determining fouling severity and the restorability of spent membranes.

show abstract

“…P0 shows a strong C-O stretching band at 1106-1151 cm −1 , strong S = O stretching (sulfoxide) and S=O stretching (sulfone) bands at 1072 cm −1 , and 1322 cm −1 , respectively [31]. A strong aromatic ester group C-O stretching band is shown at 1299 cm −1 [32]. The PP membrane shows a broader peak than P0 at a wavelength of 1450 cm −1 (assigned to the C-H in alkane group).…”

Section: Membrane Chemical Groupsmentioning

confidence: 98%

Ultrafiltration of α-Lactalbumin Protein: Acquaintance of the Filtration Performance by Membrane Structure and Surface Alteration

et al. 2021

View full text Add to dashboard Cite

α-Lactalbumin is an essential protein with multiple roles in physiological and the nutritional functionalities, such as diabetic prevention, blood pressure stabilization, and cancer cell inhibition. In the present work, polyethersulfone (PES)-based membranes were developed by incorporating Pluronic F127 and carbon nanotubes with single- and multi-walled dimensions (Sw-Cnts and Mw-Cnts) as additives. The resulting membranes were evaluated for use in the filtration of α-lactalbumin protein solution. Four series of membranes, including PES pristine membrane, were fabricated via the phase inversion process. The characteristics of the membrane samples were analyzed in terms of morphology, membrane surface hydrophilicity and roughness, and surface chemistry. The characterization results show that the incorporation of additive increased the surface wettability by reducing the surface water contact angle from 80.4° to 64.1° by adding F127 and Mw-Cnt additives. The highest pure water permeability of 135 L/(m2·h·bar) was also exhibited by the PES/F127/Mw-Cnt membrane. The performance of the modified membranes was clearly better than the pristine PSF for α-lactalbumin solution filtration. The permeability of α-lactalbumin solution increased from 9.0 L/(m2·h·bar) for the pristine PES membrane to 10.5, 11.0 and 11.5 L/(m2·h·bar) for membranes loaded with Pluronic F127, Sw-Cnts, and Mw-Cnts, respectively. Those increments corresponded to 17, 22, and 28%. Such increments could be achieved without altering the α-lactalbumin rejections of 80%. Remarkably, the rejection for the membrane loaded with Sw-Cnts even increased to 89%.

show abstract

Enhancement strategy of polyethersulfone (PES) membrane by introducing pluronic F127/graphene oxide and phytic acid/graphene oxide blended additives: preparation, characterization and wastewater filtration assessment

Cited by 11 publications

References 29 publications

Development of polyethersulfone/polylactic acid‐blended nanocellulose membranes for enhanced removal of methylene blue dye

Development of polyethersulfone/polylactic acid‐blended nanocellulose membranes for enhanced removal of methylene blue dye

Development of zwitterion-functionalized graphene oxide/polyethersulfone nanocomposite membrane and fouling evaluation using solutes of varying charges

Ultrafiltration of α-Lactalbumin Protein: Acquaintance of the Filtration Performance by Membrane Structure and Surface Alteration

Contact Info

Product

Resources

About