Robust Janus nanocomposite membrane with opposing surface wettability for selective oil-water separation

Pornea, Arni M.; Puguan, John Marc C.; Deonikar, Virendrakumar G.; Kim, Hern

doi:10.1016/j.seppur.2019.116297

Cited by 51 publications

(21 citation statements)

References 40 publications

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“…Omniphobic membranes perhaps are highly regarded for MD processes, as they possess good resistivity against surfactants and wetting agents, but still suffers from fouling issue in oilpolluted wastewaters [27,32]. High volume of oil-containing wastewater produced during different food and shale gas drilling process make it crucial to find an effective and low cost process for oil water separation [49,50]. Oil droplets in feed can lead to quick fouling of the membrane surface, resulting to decrease in flux, clogging and wetting issues that affect its long-term operation.…”

Section: Anti-fouling and Anti-wetting Propertiesmentioning

confidence: 99%

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Janus membranes for membrane distillation: Recent advances and challenges

Afsari

Shon

Tijing

2021

Advances in Colloid and Interface Science

108

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Membrane distillation (MD) is a promising hybrid thermal-membrane separation technology that can efficiently produce freshwater from seawater or contaminated wastewater.However, the relatively low flux and the presence of fouling or wetting agents in feed solution negate the applicability of MD for long term operation. In recent years, 'two-faced' membranes or Janus membranes have shown promising potential to decrease wetting and fouling problem of common MD system as well as enhance the flux performance. In this review, a comprehensive study was performed to investigate the various fabrication, modification, and novel design processes to prepare Janus membranes and discuss their performance in desalination and wastewater treatment utilizing MD. The promising potential, challenges and future prospects relating to the design and use of Janus membranes for MD are also tackled in this review.

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Section: Anti-fouling and Anti-wetting Propertiesmentioning

confidence: 99%

“…Therefore, the selection of top layer with high wettability is desired. Also, the saturation time for the top layer is an important factor during lab work and the experimental data should be reported after saturation of top layer [50,60].…”

Section: Performance Of Janus Membranes 61 Hydrophilic-hydrophobic/omniphobic Janus Membrane Configurationmentioning

confidence: 99%

Janus membranes for membrane distillation: Recent advances and challenges

Afsari

Shon

Tijing

2021

Advances in Colloid and Interface Science

108

View full text Add to dashboard Cite

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“…A membrane is considered hydrophilic when the contact angle falls between 0 to 90 • . Membranes with hydrophilic properties are ideal in the oil/water emulsion treatment when water is the component that is permeating through the membrane pore and vice versa [34,35]. The hydrophilic surface attracts water by creating a hydration layer and prevents oil droplet interaction with the membrane surface, hence improving oil droplet rejection [36].…”

Section: Surface Contact Anglementioning

confidence: 99%

Cigarette Butt Waste as Material for Phase Inverted Membrane Fabrication Used for Oil/Water Emulsion Separation

et al. 2021

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The increasing rate of oil and gas production has contributed to a release of oil/water emulsion or mixtures to the environment, becoming a pressing issue. At the same time, pollution of the toxic cigarette butt has also become a growing concern. This study explored utilization of cigarette butt waste as a source of cellulose acetate-based (CA) polymer to develop a phase inverted membrane for treatment of oil/water emulsion and compare it with commercial polyvinylidene difluoride (PVDF) and polysulfone (PSF). Results show that the CA-based membrane from waste cigarette butt offers an eco-friendly material without compromising the separation efficiency, with a pore size range suitable for oil/water emulsion filtration with the rejection of >94.0%. The CA membrane poses good structural property similar to the established PVDF and PSF membranes with equally asymmetric morphology. It also poses hydrophilicity properties with a contact angle of 74.5°, lower than both PVDF and PSF membranes. The pore size of CA demonstrates that the CA is within the microfiltration range with a mean flow pore size of 0.17 µm. The developed CA membrane shows a promising oil/water emulsion permeability of 180 L m−2 h−1 bar−1 after five filtration cycles. However, it still suffers a high degree of irreversible fouling (>90.0%), suggesting potential future improvements in terms of membrane fouling management. Overall, this study demonstrates a sustainable approach to addressing oil/water emulsion pollution treated CA membrane from cigarette butt waste.

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“…Janus membranes refer to membranes with two sides having different wetting properties; that is, one side is hydrophilic, while the other side is hydrophobic. They work best in DCMD configurations [ 83 , 84 ]. Electrospinning has been used to fabricate Janus membranes by either wholly electrospun nanofiber configuration or by a combination of electrospinning and casting or modification processes.…”

Section: Applications Of Electrospun Nanofiber Compositesmentioning

confidence: 99%

Progress on the Fabrication and Application of Electrospun Nanofiber Composites

et al. 2020

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Nanofibers are one of the most attractive materials in various applications due to their unique properties and promising characteristics for the next generation of materials in the fields of energy, environment, and health. Among the many fabrication methods, electrospinning is one of the most efficient technologies which has brought about remarkable progress in the fabrication of nanofibers with high surface area, high aspect ratio, and porosity features. However, neat nanofibers generally have low mechanical strength, thermal instability, and limited functionalities. Therefore, composite and modified structures of electrospun nanofibers have been developed to improve the advantages of nanofibers and overcome their drawbacks. The combination of electrospinning technology and high-quality nanomaterials via materials science advances as well as new modification techniques have led to the fabrication of composite and modified nanofibers with desired properties for different applications. In this review, we present the recent progress on the fabrication and applications of electrospun nanofiber composites to sketch a progress line for advancements in various categories. Firstly, the different methods for fabrication of composite and modified nanofibers have been investigated. Then, the current innovations of composite nanofibers in environmental, healthcare, and energy fields have been described, and the improvements in each field are explained in detail. The continued growth of composite and modified nanofiber technology reveals its versatile properties that offer alternatives for many of current industrial and domestic issues and applications.

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Robust Janus nanocomposite membrane with opposing surface wettability for selective oil-water separation

Cited by 51 publications

References 40 publications

Janus membranes for membrane distillation: Recent advances and challenges

Janus membranes for membrane distillation: Recent advances and challenges

Cigarette Butt Waste as Material for Phase Inverted Membrane Fabrication Used for Oil/Water Emulsion Separation

Progress on the Fabrication and Application of Electrospun Nanofiber Composites

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