Asymmetric superwetting stainless steel meshes for on-demand and highly effective oil-water emulsion separation

Lei Qiu; Jiaxu Zhang; Zhiguang Guo; Weimin Liu

doi:10.1016/j.seppur.2021.118994

Asymmetric superwetting stainless steel meshes for on-demand and highly effective oil-water emulsion separation

Lei Qiu, Jiaxu Zhang, Zhiguang Guo, Weimin Liu

Research output: Contribution to journal › Article › peer-review

89 Scopus citations

Abstract

Oil-water separation, especially emulsion separation, has become a global challenge due to frequent oil spills and the increase in industrial oily wastewater. It is of great significance to develop a feasible and effective separation membrane to purify highly stable emulsified oily wastewater. Here, a Janus membrane that can be used to realize the on-demand separation of oil-water emulsion is prepared by spraying silicon dioxide nanoparticles modified by hexadecyltrimethoxysilane onto the stainless steel meshes. The on-demand separation of surface-stabilized emulsions whether water-in-oil or oil-in-water emulsions can be achieved by using the Janus membrane. In addition, the prepared membrane still maintains outstanding performance after 10 oil-water separation cycles and 50 sandpaper abrasion cycles. The membrane can keep hydrophobicity whether under acidic or alkaline conditions, so it can cope with various harsh environments.

Original language	English
Article number	118994
Journal	Separation and Purification Technology
Volume	273
DOIs	https://doi.org/10.1016/j.seppur.2021.118994
State	Published - 15 Oct 2021
Externally published	Yes

Keywords

Emulsion separation
Hexadecyltrimethoxysilane
Janus membrane
Silicon dioxide

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10.1016/j.seppur.2021.118994

Cite this

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title = "Asymmetric superwetting stainless steel meshes for on-demand and highly effective oil-water emulsion separation",

abstract = "Oil-water separation, especially emulsion separation, has become a global challenge due to frequent oil spills and the increase in industrial oily wastewater. It is of great significance to develop a feasible and effective separation membrane to purify highly stable emulsified oily wastewater. Here, a Janus membrane that can be used to realize the on-demand separation of oil-water emulsion is prepared by spraying silicon dioxide nanoparticles modified by hexadecyltrimethoxysilane onto the stainless steel meshes. The on-demand separation of surface-stabilized emulsions whether water-in-oil or oil-in-water emulsions can be achieved by using the Janus membrane. In addition, the prepared membrane still maintains outstanding performance after 10 oil-water separation cycles and 50 sandpaper abrasion cycles. The membrane can keep hydrophobicity whether under acidic or alkaline conditions, so it can cope with various harsh environments.",

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AU - Qiu, Lei

AU - Zhang, Jiaxu

AU - Guo, Zhiguang

AU - Liu, Weimin

PY - 2021/10/15

Y1 - 2021/10/15

N2 - Oil-water separation, especially emulsion separation, has become a global challenge due to frequent oil spills and the increase in industrial oily wastewater. It is of great significance to develop a feasible and effective separation membrane to purify highly stable emulsified oily wastewater. Here, a Janus membrane that can be used to realize the on-demand separation of oil-water emulsion is prepared by spraying silicon dioxide nanoparticles modified by hexadecyltrimethoxysilane onto the stainless steel meshes. The on-demand separation of surface-stabilized emulsions whether water-in-oil or oil-in-water emulsions can be achieved by using the Janus membrane. In addition, the prepared membrane still maintains outstanding performance after 10 oil-water separation cycles and 50 sandpaper abrasion cycles. The membrane can keep hydrophobicity whether under acidic or alkaline conditions, so it can cope with various harsh environments.

AB - Oil-water separation, especially emulsion separation, has become a global challenge due to frequent oil spills and the increase in industrial oily wastewater. It is of great significance to develop a feasible and effective separation membrane to purify highly stable emulsified oily wastewater. Here, a Janus membrane that can be used to realize the on-demand separation of oil-water emulsion is prepared by spraying silicon dioxide nanoparticles modified by hexadecyltrimethoxysilane onto the stainless steel meshes. The on-demand separation of surface-stabilized emulsions whether water-in-oil or oil-in-water emulsions can be achieved by using the Janus membrane. In addition, the prepared membrane still maintains outstanding performance after 10 oil-water separation cycles and 50 sandpaper abrasion cycles. The membrane can keep hydrophobicity whether under acidic or alkaline conditions, so it can cope with various harsh environments.

KW - Emulsion separation

KW - Hexadecyltrimethoxysilane

KW - Janus membrane

KW - Silicon dioxide

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DO - 10.1016/j.seppur.2021.118994

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JO - Separation and Purification Technology

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ER -

Asymmetric superwetting stainless steel meshes for on-demand and highly effective oil-water emulsion separation

Abstract

Keywords

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