scholarly journals Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil–Water Separation Processes

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 87
Author(s):  
Salma Elhenawy ◽  
Majeda Khraisheh ◽  
Fares AlMomani ◽  
Mohammad K. Hassan ◽  
Mohammad A. Al-Ghouti ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oil Spill ◽  
Large Scale ◽  
Oil Spills ◽  
Petroleum Industry ◽  
Water Separation ◽  
Wide Range ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil Spill Cleanup

The vast demand for petroleum industry products led to the increased production of oily wastewaters and has led to many possible separation technologies. In addition to production-related oily wastewater, direct oil spills are associated with detrimental effects on the local ecosystems. Accordingly, this review paper aims to tackle the oil spill cleanup issue as well as water separation by providing a wide range of graphene-based technologies. These include graphene-based membranes; graphene sponges; graphene-decorated meshes; graphene hydrogels; graphene aerogels; graphene foam; and graphene-coated cotton. Sponges and aerogels modified by graphene and reduced graphene oxide demonstrated effective oil water separation owing to their superhydrophobic/superoleophilic properties. In addition, oil particles are intercepted while allowing water molecules to penetrate the graphene-oxide-coated metal meshes and membranes thanks to their superhydrophilic/underwater superoleophobic properties. Finally, we offer future perspectives on oil water separation that are hindering the advancements of such technologies and their large-scale applications.

scholarly journals Simultaneous, efficient and continuous oil–water separation via antagonistically functionalized membranes prepared by atmospheric-pressure cold plasma

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dong-hyun Kim ◽  
Rodolphe Mauchauffé ◽  
Jongwoon Kim ◽  
Se Youn Moon
Keyword(s):  
Atmospheric Pressure ◽  
Large Scale ◽  
Oil Spills ◽  
Low Cost ◽  
Separation Flow ◽  
Water Separation ◽  
Cold Plasmas ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil Spill Cleanup

AbstractFor decades, oil and water separation has remained a challenge. Not only oil spills but also industrial oily wastewaters are threatening our environment. Over the years, oil–water separation methods have been developed, however, there are still considerable hurdles to overcome to provide a low cost and efficient process able to treat a large amount of liquid. In this work, we suggest a continuous, simultaneous and effective oil–water separation method based on the antagonistic functionalization of meshes using atmospheric pressure cold plasmas. Using this robust plasma method, superhydrophobic/underwater-superoleophilic or superhydrophilic/underwater-superoleophobic functionalized meshes are obtained. Antagonistically functionalized meshes can simultaneously separate oil and water and show continuous separation flow rates of water (900 L m−2 h−1) and oil (400 L m−2 h−1) with high purities (> 99.9% v/v). This fast, low-cost and continuous plasma-based process can be readily and widely adopted for the selective functionalization of membranes at large scale for oil-spill cleanup and water purification.

Wetting and non-wetting behavior of abrasive paper for oil water separation and oil spill cleanup

2014 ◽  
Vol 41 (11) ◽  
pp. 8019-8029 ◽  
Author(s):  
Shan Shi ◽  
M. S. Sadullah ◽  
M. A. Gondal ◽  
Yihe Sui ◽  
Suqiao Liu ◽  
...  
Keyword(s):  
Oil Spill ◽  
Water Separation ◽  
Wetting Behavior ◽  
Oil Water Separation ◽  
Oil Water ◽  
Oil Spill Cleanup ◽  
Abrasive Paper

One-step fabrication of eco-friendly superhydrophobic fabrics for high-efficiency oil/water separation and oil spill cleanup

Nanoscale ◽  
2022 ◽  
Author(s):  
Haiyang Yu ◽  
Min Wu ◽  
Gaigai Duan ◽  
Xiao Gong
Keyword(s):  
Human Health ◽  
Oil Spill ◽  
High Efficiency ◽  
Oily Wastewater ◽  
Water Separation ◽  
Oil Leakage ◽  
Oil Water Separation ◽  
One Step ◽  
Oil Water ◽  
Oil Spill Cleanup

Oily wastewater and oil spill caused by oil leakage accidents pose an extremely harmful to human health and environment. Thus, it is very important to exploit superhydrophobic separation materials and...

scholarly journals A Robust PVDF-Assisted Composite Membrane for Tetracycline Degradation in Emulsion and Oil-Water Separation

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3201
Author(s):  
Huijun Li ◽  
Xin Xu ◽  
Jiwei Wang ◽  
Xuefeng Han ◽  
Zhouqing Xu
Keyword(s):  
Graphene Oxide ◽  
Glass Fiber ◽  
Polyvinylidene Fluoride ◽  
Large Scale ◽  
Environmental Crisis ◽  
Polluted Water ◽  
Separation Performance ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water

Tetracycline (TC) contamination in water has progressively exacerbated the environmental crisis. It is urgent to develop a feasible method to solve this pollution in water. However, polluted water often contains oil. This paper reported a glass fiber (FG)-assisted polyvinylidene fluoride (PVDF) hybrid membrane with dual functions: high TC degradation efficiency in emulsion and oil-water separation. It can meet the catalytic degradation of tetracycline in complex water. This membrane was decorated by coating the glass fiber with PVDF solution containing hydrophilic graphene oxide hybridized NH2-MIL-101(Fe) particles. Moreover, due to its strong mechanical strength enhanced by the glass fiber, it can be reused as TC degradation catalysts for dozens of times without cracking. Thanks to the hydrophobicity of PVDF and the surface pore size of MOFs, the prepared membrane showed a good oil-water separation performance. Besides, the hydrophilic graphene oxide (GO) and NH2-MIL-101(Fe) improved the membrane’s anti-fouling performance, allowing it to be reused as the separation membrane. Therefore, the outstanding stability and recoverability of the membrane make it as a fantastic candidate material for large-scale removal of TC as well as oil-water separation application.

scholarly journals Carbon Nanotubes and Polydopamine Modified Poly(dimethylsiloxane) Sponges for Efficient Oil–Water Separation

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2431
Author(s):  
Wen Zhang ◽  
Juanjuan Wang ◽  
Xue Han ◽  
Lele Li ◽  
Enping Liu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Large Scale ◽  
Absorption Capacity ◽  
Potential Candidate ◽  
Hard Template ◽  
Water Separation ◽  
Industrial Oil ◽  
The Matrix ◽  
Oil Water Separation ◽  
Oil Water

In this paper, effective separation of oil from both immiscible oil–water mixtures and oil-in-water (O/W) emulsions are achieved by using poly(dimethylsiloxane)-based (PDMS-based) composite sponges. A modified hard template method using citric acid monohydrate as the hard template and dissolving it in ethanol is proposed to prepare PDMS sponge composited with carbon nanotubes (CNTs) both in the matrix and the surface. The introduction of CNTs endows the composite sponge with enhanced comprehensive properties including hydrophobicity, absorption capacity, and mechanical strength than the pure PDMS. We demonstrate the successful application of CNT-PDMS composite in efficient removal of oil from immiscible oil–water mixtures within not only a bath absorption, but also continuous separation for both static and turbulent flow conditions. This notable characteristic of the CNT-PDMS sponge enables it as a potential candidate for large-scale industrial oil–water separation. Furthermore, a polydopamine (PDA) modified CNT-PDMS is developed here, which firstly realizes the separation of O/W emulsion without continuous squeezing of the sponge. The combined superhydrophilic and superoleophilic property of PDA/CNT-PDMS is assumed to be critical in the spontaneously demulsification process.

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