Novel sulfonated graphene oxide incorporated polysulfone nanocomposite membranes for enhanced-performance in ultrafiltration process

Kang, Young Hun; Obaid, M.; Jang, Jaewon; Ham, Moon‐Ho; Kim, In Soo

doi:10.1016/j.chemosphere.2018.05.141

Cited by 122 publications

(59 citation statements)

References 55 publications

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“…The peaks at around 1200 cm −1 and 1180 cm −1 in compounds b and c are attributed to asymmetric and symmetric vibrations of OSO, respectively . The peaks at around 1630 cm −1 are originated from the aromatic CC stretching vibrations of benzene ring . It is envisaged that the structure of the compounds can be confirmed by combining the IR results with those of 1 H‐NMR investigation.…”

Section: Resultsmentioning

confidence: 93%

Effects of sulfonation on bis‐styrylbiphenyl fluorescent whitening agents for polypropylene

Fang

Lin

et al. 2019

J of Applied Polymer Sci

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Three derivatives of bis-styrybiphenyl with different degrees of sulfonation to be used as fluorescent whitening agents (FWAs) were synthesized. Studies on their spectroscopic properties were performed using a combination of computational methods. Whitening effects of FWAs and the improved thermal stability of polypropylene (PP) were investigated. The morphology of plastic samples was examined by scanning electronic microscopy (SEM). In order to improve the compatibility between FWA and PP, PP grafted with maleic anhydride (MAH) was applied as compatibilizer. The optical properties were further clarified by the results of frontier molecular orbital modeling, which show that the presence of sulfonic sodium group leads to a red shift of maximum UV absorption wavelength and a low HOMO-LUMO energy band gap. It is observed that the addition of 0.010 wt % of the sulfonated FWA would result in the expected whitening effect as well as improved PP thermal stability, while at or above 0.015 wt %, such effects worsen sharply owing to phase separation. Furthermore, the use of MAH-grafted PP as compatibilizer results in improvement of phase behavior and thermal stability. The study provides new insights into the effect of FWA structure on the properties of PP that are related to the whitening of the material.

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Section: Resultsmentioning

confidence: 93%

Effects of sulfonation on bis‐styrylbiphenyl fluorescent whitening agents for polypropylene

Fang

Lin

et al. 2019

J of Applied Polymer Sci

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“…Today, membranes and membrane processes have been applied in cleaning technology and the environmental field [1,2]. Efficiency and utility from membrane applications have led to the need for new membrane materials with properties suitable for their applications.…”

Section: Introductionmentioning

confidence: 99%

“…Polysulfone (PSf ) is the preferred choice in membrane fabrication, and its prominence is derived from chemical resistance, wide operating temperature and pH, and high mechanical strength [2][3][4][5]. However, at present, the operating costs of PSf membrane processes are still quite high because of fouling, limitations on filtering capacity, and longevity, which are due to their high hydrophobic properties [2-4, 6, 7].…”

Section: Introductionmentioning

confidence: 99%

“…However, at present, the operating costs of PSf membrane processes are still quite high because of fouling, limitations on filtering capacity, and longevity, which are due to their high hydrophobic properties [2-4, 6, 7]. Recently, the increase in hydrophilicity and the minimization of fouling of PSf membranes have been tested through a variety of solutions including modifying the surface [8,9], coating onto the membrane surface [10][11][12][13][14], and blending the hydrophilic materials into the membrane casting solution before fabricating the membrane [2,5,[15][16][17][18][19][20]. Among the aforementioned methods, the method of blending PSf with some hydrophilic polymers or inorganic nanoparticles to increase the surface hydrophilic and antifouling properties has proven remarkably effective [2,5,[20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

“…Zodrow et al [21] blended nanosilver particles into the matrix of the PSf membrane to increase the membrane hydrophilicity and reduce the biofouling and virus penetration. By using the phase inversion method, Kang et al [2] prepared more hydrophilic PSf/SGO (sulfonated graphene oxide) membranes. After conducting the tests, the researchers found that mixing 1.5 w/w% SGO into the PSf matrix made this membrane reach a water flux higher than 125% compared to that of the PSf membrane.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of a Hydrophilic Polysulfone Membrane Using Graphene Oxide

Nguyen

Ngo

Dinh

et al. 2019

Journal of Chemistry

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In general, the polysulfone (PSf ) membranes are popular choices for water treatment because they have high thermal stability and good chemical resistance. On the other hand, the filtration capacity of the polysulfone membrane is limited because of its low water flux and poor antifouling ability, which are caused by the low surface hydrophilicity of the membranes. In this research, blending of graphene oxide (GO) or graphene oxide-titanium dioxide (GO-TiO 2 ) mixture into the polysulfone matrix had been carried out through the phase inversion method to enhance the hydrophilic and antifouling properties. Methods such as energydispersive X-ray spectroscopy, scanning electron microscopy, Fourier transform infrared spectroscopy, and water contact angle measurement were used to examine the surface properties of the prepared membranes. Experimental results have led to a conclusion that graphene oxide can be stabilized into prepared membranes, and then, by reducing the water contact angle values, the surface of these membranes becomes hydrophilic, which increases the permeability and the water flux of methylene blue from the aqueous feed solution, improving the membrane's antifouling resistance.

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Membranes for Oil/Water Separation: A Review

Mousa

Fahmy

Ali

et al. 2022

Adv Materials Inter

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This oily wastewater has severe adverse effects on the environment, as previously witnessed during several oil spill accidents in the marine and terrestrial environments due to oil leakage from petroleum transport pipelines, storage tanks or transport facilities, and blowouts in oil wells. [3] The treatment of oily wastewater can be performed via numerous technologies such as adsorption, [4] dissolved air flotation, [5] coagulation, [6] gravity separation, [7] and biological treatment. [8] However, these methods have several limitations, such as low removal efficacy, high operational cost, high energy consumption, corrosion, and production of contaminated solid waste from spent adsorbents. [9] The rapid growth in separation technologies has resulted in various membranes that could overcome the shortcomings of other treatment methods. [10] Thus, membranes have become more desirable for oil/water separation for industrial applications because of their small footprint, environmental friendliness, cost-effectiveness, high productivity, low chemical consumption, automation capability, steady operation, and excellent separation efficiency. [11] Indeed, pore blockage or fouling remains among the major obstacles facing the membrane separation process since it decreases the flux, restricts the permeation rate, increases the energy consumption, and decreases the membrane lifetime. Therefore, substantial research efforts have been focused on enhancing the properties of membranes either via developing novel materials or introducing surface modifications for conventional membranes. [12,13] Although few reviews were published on oil/water separation membranes, they are either outdated or focused on a specific membrane type. This review features the most recent progress in membrane separation and its practical application in oil/water separation. It includes four sections that cover essential factors related to the advancement in membrane technologies are highlighted, including: 1) membrane properties and characterization for oily waste water separation; 2) the employed materials to fabricate membranes (i.e., metallic, organic, inorganic, and hybrid materials), 3) primary methods for designing membranes (i.e., mixed matrix nanocomposites and multilayers nanocomposites), and 4) membrane fabrication techniques and surface modification methods. Membrane Properties and CharacterizationThe main objective of the oil/water separation membrane is to achieve high separation efficiency and excellent performance.Recent advancements in separation and membrane technologies have shown a great potential in removing oil from wastewaters effectively. In addition, the capabilities have improved to fabricate membranes with tunable properties in terms of their wettability, permeability, antifouling, and mechanical properties that govern the treatment of oily wastewaters. Herein, authors have critically reviewed the literature on membrane technology for oil/water separation with a specific focus on: 1) membrane properties and characterization, 2) d...

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Novel sulfonated graphene oxide incorporated polysulfone nanocomposite membranes for enhanced-performance in ultrafiltration process

Cited by 122 publications

References 55 publications

Effects of sulfonation on bis‐styrylbiphenyl fluorescent whitening agents for polypropylene

Effects of sulfonation on bis‐styrylbiphenyl fluorescent whitening agents for polypropylene

Preparation and Characterization of a Hydrophilic Polysulfone Membrane Using Graphene Oxide

Membranes for Oil/Water Separation: A Review

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