Performance Analysis of Gravity-Driven Oil–Water Separation Using Membranes with Special Wettability

Oh, Seungtae; Ki, Seokkan; Ryu, Seunggeol; Shin, Min-Chul; Lee, Jinki; Lee, Choongyeop; Nam, Youngsuk

doi:10.1021/acs.langmuir.9b00993

Cited by 39 publications

(13 citation statements)

References 65 publications

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“…Due to increasingly serious water pollution caused by discharge of industrial wastewater with oil or oil spill accidents, more and more attention has been focused on oil–water separation 1–13 . In particular, gravity‐assisted oil–water separation has a high application value 14–20 . The key to gravity‐assisted oil–water separation is the selection of filtration media exhibiting extreme wettability.…”

Section: Introductionmentioning

confidence: 99%

“…The separation performance of porous superhydrophobic filtration media is primarily determined by material properties and microstructure, via the synergetic effect of low surface energy and hierarchical surface roughness. Based on available studies and reports, classified by microstructure, porous superhydrophobic filtration media can be divided into membrane, fabric, mesh, microsphere and three‐dimensional porous media such as foam, sponge, aerogel, etc 16,18,21–23 . Classified from the perspective of materials, various chemical compositions have been studied, such as polymeric, metallic, ceramic and carbon‐based materials 18,24,25 .…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8][9][10][11][12][13] In particular, gravity-assisted oil-water separation has a high application value. [14][15][16][17][18][19][20] The key to gravity-assisted oil-water separation is the selection of filtration media exhibiting extreme wettability. Porous superhydrophobic materials as ideal filtration media with advantages of low energy input and superior separation performance offer a more exciting application prospect, compared with traditional treatment methods, such as oil skimming, centrifuging, coalescing, floating and so on.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of porous PTFE/C composite foam and its application in gravity‐driven oil–water separation

Guo

Yao

Zhu

et al. 2022

Polymer International

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Porous superhydrophobic filtration media with durable performance that can be used in harsh environments remain an urgent requirement. Here, we designed and prepared a porous polytetrafluoroethylene (PTFE)/C composite foam derived from PTFE/glutaraldehyde‐crosslinked poly(vinyl formal) foam via a method of low‐temperature in situ carbonization by the combination of sintering in nitrogen atmosphere and oxygen atmosphere. The as‐prepared porous PTFE/C composite foam had an interconnected macropore structure and wettability of superhydrophobicity. Meanwhile, the porous skeleton of the PTFE/C composite foam showed a skin–core microstructure with the functional skin layer of PTFE continuous phase and the support core of PTFE and carbon in situ composite phase. The PTFE functional layer was anchored to the support composite layer in a root‐like branching, which endows the porous PTFE/C composite foam with an extremely durable performance. In gravity‐driven oil–water separation, the porous PTFE/C composite foam achieved considerable oil flux (from 27 174 to 73 242 L h−1 m−2) and purity (as high as 99.83 wt%). Meanwhile, the porous PTFE/C composite foam presented resistance to strong acids, strong alkalis, chemical solvents and friction. Even after it had been mechanically damaged, the superhydrophobic properties of the foam were not degraded. The as‐prepared porous PTFE/C composite foam showed great potential in all kinds of harsh environments. © 2021 Society of Industrial Chemistry.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of porous PTFE/C composite foam and its application in gravity‐driven oil–water separation

Guo

Yao

Zhu

et al. 2022

Polymer International

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“…However, the major problem in filtration membranes for oil-water separation is membrane fouling, caused by surfactant adsorption or pore plugging by oil droplets which leads to decreased permeation flux. In most cases, there is inevitable requirement to clean the membrane [12,13]. Membrane cleaning involves extra maintenance downtime, chemicals and energy.…”

Section: Introductionmentioning

confidence: 99%

Oil-Water Emulsion Separation Using Nanoparticle-Coated Polystyrene Membrane

Mbakaogu¹,

Nwogu²,

Izuwa³

et al. 2020

OGCE

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The demand for membranes have increased enormously in the last decades due to increased applicability in many industrial activities. In the oil and gas industry, filtration membranes gain popularity over other types of membranes due to their usage in separation of oil-water emulsion using microfiltration and/or ultrafiltration techniques. Researchers have geared interest in the development of better performance membranes aimed at improving the efficiency of separation and antifouling properties. Developments in nanotechnology has made available nanoparticles which are used to further enhance the properties and performance of membranes, adding credence to membrane usage in emulsion separation. In this work, Polystyrene membrane of size 0.1µm is enhanced by coating with Aluminium oxide nanoparticle for improve fouling resistance properties and separation efficiency. Experiments were conducted in separation of oil-water emulsion using the prepared composite membrane system. Results show that the membrane system yields 97.86% and 97.54% efficiency in terms of oil rejection for a pressure application of 60% stroke and 80% stroke respectively while the permeation fluxes are 2.433 ml/cm 2 -min and 1.944 ml/cm 2 -min for 80% stroke and 60% stroke pressure applications respectively. The results reveal that increase in pressure has less effect in the membrane efficiency. The application of aluminum oxide coating increased the efficiency of the membrane and reduced its fouling characteristics.

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“…The average pore size of the air plasma treated membranes calculated based on the gas permeability data is 1.5 times greater than that of the virgin membrane. Oh et al [15] researched on "Performance Analysis of Gravity-Driven Oil-Water Separation Using Membranes with Special Wettability." They focused on investigating three parameters of separation which are: separation efficiency, liquid intrusion pressure, and mass flux, as a function of pore geometry and liquid properties.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Polysulfone Based Aluminium Oxide Coated Membrane for Separation of Crude Oil Emulsion in the Niger Delta

Nwogu¹,

Izuwa²,

Mbakaogu³

et al. 2020

AJEE

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There is need for efficient separation of crude oil from its emulsion in oil and gas processes especially during production and refining activities. Among other methods used for crude oil emulsion demulsification, polymer membranes have attracted a lot of attention. The increasing interest in polymer membranes usage for ultrafiltration and micro filtration are mainly due to their versatility, efficiency and reduced operating cost when compared with conventional techniques such as use of chemical, flocculation etc. This paper illustrates experimental process for the separation of crude oil emulsion using Polysulfone membrane material coated with Aluminium oxide nanoparticle. The crude oil emulsion was prepared by mixing with distil water to obtain an oil in water emulsion. Because of the oleophilicity of Polysulfone membrane materials in oil/water separation, aluminum nanoparticles were used as metallic coatings to their Polysulfone membrane to improve efficiency and anti-fouling characteristics. Three parametres were investigated in the results, these include the separation efficiency in terms of oil rejection, the permeation flux, the filtrate volume for pressure application of 80% stroke and 60% stroke. The augmented membrane construction yields 98.5% and 97.6% efficiency in terms of oil rejection for a pressure application of 60% stroke and 80% stroke respectively while the permeation fluxes are 0.911 ml/cm 2 -min and 1.024 ml/cm 2min for 80% stroke and 60% stroke pressure application respectively.

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Performance Analysis of Gravity-Driven Oil–Water Separation Using Membranes with Special Wettability

Cited by 39 publications

References 65 publications

Preparation of porous PTFE/C composite foam and its application in gravity‐driven oil–water separation

Preparation of porous PTFE/C composite foam and its application in gravity‐driven oil–water separation

Oil-Water Emulsion Separation Using Nanoparticle-Coated Polystyrene Membrane

Investigation of Polysulfone Based Aluminium Oxide Coated Membrane for Separation of Crude Oil Emulsion in the Niger Delta

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