Equilibrium kinetics study of electrospun polystyrene and polystyrene-zeolite fibres for crude oil-water separation

Ajenifuja, Emmanuel; Alayande, Samson Oluwagbemiga; Aromolaran, Opeyemi; Ajao, J. A.; Dare, Enock O.; Msagati, Titus A.M.; Ajayi, E. O. B.

doi:10.1016/j.jwpe.2017.08.010

Cited by 21 publications

(7 citation statements)

References 14 publications

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“…When the RH exceeded 70%, the electrospinning were unable to be performed. PS is a hydrophobic polymer that is insoluble in water . When the humidity in the spinning environment is high, the PS chain cannot be fully stretched in the jet and will separate from the solvent.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze‐drying for oil removal from water

Tang

Liu

Zhao

2018

J of Applied Polymer Sci

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A novel method was proposed to fabricate hollow and surface porous polystyrene (PS) fibrous membranes for the removal of oil from water. Spinning solutions were prepared by using camphene and tetraethoxysilane (TEOS) as pore‐forming agents, and hollow PS fibers with 100–400 nm pores on the surface were fabricated by electrospinning and freeze‐drying. The distribution and volatilization of camphene and TEOS, as well as the drying behavior of solvents in high relative humidity, were important factors in forming the porous structure of PS fibers. The specific surface area of obtained PS fibrous membranes was twice that of conventional electrospun PS fibrous membranes and displayed superhydrophobic properties. Moreover, the large adsorption storage space was formed due to the hollow structure and porous surface of PS fibers. The maximum oil adsorption capacity of the porous PS fibrous membrane was 105.4 g g−1, and was larger than that of the conventional PS fibrous membrane after repeated five times, thus making it a promising tool for oil spill cleanups. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47262.

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Section: Resultsmentioning

confidence: 99%

Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze‐drying for oil removal from water

Tang

Liu

Zhao

2018

J of Applied Polymer Sci

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“…Equation () represents the pseudo second‐order model 44

\frac{t}{q_{t}} goodbreak= \frac{1}{k_{2} q_{e}^{2}} goodbreak+ \frac{t}{q_{e}},

where, q e (g/g) is the sorption capacity at equilibrium stage; q t ( g / g ) is the sorption capacity at time t ; and k 2 is the pseudo second‐order rate constant (gg −1 min −1 ).…”

Section: Methodsmentioning

confidence: 99%

Polyurethane/multi‐walled carbon nanotube electrospun composite membrane for oil/water separation

Juraij

Chinglenthoiba

Manaf

et al. 2022

J of Applied Polymer Sci

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Superoleophilic and high‐strength electrospun membranes are promising materials for oil/water separation applications. Here we report the fabrication of a mechanically robust, hydrophobic polyurethane/multi‐walled carbon nanotube (PU/MWCNT) electrospun composite membrane for gravity‐driven oil/water separation. Various electrospun composite membranes with different MWCNT loadings were developed. Spinning parameters such as polymer concentration, solvent ratio, applied voltage, flow rate, and working distance were systematically optimized. The incorporation of MWCNT has increased the thermal stability, hydrophobicity, mechanical properties, and dye adsorption capacity of the PU membrane. The optimized composite fibrous membrane (PU/0.2‐MWCNT) exhibited a percentage elongation of 502%. All the PU/MWCNT composite membranes were found to be superoleophilic in nature. The optimized composite membrane showed the highest oil sorption capacity and lab‐scale oil flux of 14.21–24.07 gg−1 and 425.44 Lm−2 h−1, respectively. In the oil sorption process, all electrospun membranes were fitted to a pseudo second‐order kinetic model. Furthermore, electrospun composite membranes could adsorb toxic dye (Methylene blue) from the oil–water mixture. The PU/MWCNT composite membrane could be a potential candidate for oil/water separation applications.

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“…To address this issue, much effort has been devoted to developing effective and inexpensive methods for removing

, as well as to the treatment of metal ions in water resources, such as chemical precipitation, ion-exchange, solvent extraction, reverse osmosis, filtration, evaporation, and adsorption [ 4 , 5 , 6 ]. The removal of metal ions from water using the adsorption method is popular because of its low cost, ease of operation, high efficiency, and low level of pollution [ 7 , 8 , 9 ]. Many adsorbents have been successfully used to adsorb pollutants, such as biomaterials, carbon materials, metal oxide nanoparticles (NPs), and nanofibrous membranes.…”

Section: Introductionmentioning

confidence: 99%

Magnetic/Polyetherimide-Acrylonitrile Composite Nanofibers for Nickel Ion Removal from Aqueous Solution

et al. 2021

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In this study, a magnetic/polyetherimide-acrylonitrile composite nanofiber membrane with effective adsorption of nickel ions in an aqueous solution was created using a simple electrospinning method. Iron oxide nanoparticles (NPs) were stirred and ultrasonically dispersed into a polyetherimide-acrylonitrile solution to create a homogenous NPs suspension, which was placed in an electrospinning machine to produce a uniform and smooth nanofiber composite membrane. Nanoparticle incorporation into this membrane was confirmed using scanning electron microscope, energy dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and NPs aqueous stability from a leaching test. The high adsorption capability of the membrane on nickel ions was attributed to the combination of magnetic NPs, polyetherimide-acrylonitrile matrix, and the nanostructure of the membrane. A membrane containing magnetic NPs demonstrated the maximum adsorption capabilities (102 mg/g) of nickel ions in an aqueous solution. Various kinetic and isotherm models were applied to understand the adsorption behavior, such as pseudo-second-order kinetic and Langmuir isotherm models. A polyetherimide-acrylonitrile composite nanofiber membrane containing magnetic NPs could be used as an environmentally friendly and nontoxic adsorbent for the removal of nickel ions in an aqueous medium due to its ease of preparation and use and stability in aqueous mediums.

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Equilibrium kinetics study of electrospun polystyrene and polystyrene-zeolite fibres for crude oil-water separation

Cited by 21 publications

References 14 publications

Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze‐drying for oil removal from water

Fabrication of hollow and porous polystyrene fibrous membranes by electrospinning combined with freeze‐drying for oil removal from water

Polyurethane/multi‐walled carbon nanotube electrospun composite membrane for oil/water separation

Magnetic/Polyetherimide-Acrylonitrile Composite Nanofibers for Nickel Ion Removal from Aqueous Solution

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