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Title: Smart membranes for oil/water emulsions separation: a review
Authors: Dansawad, Panchan
Yang, Yujie
Li, Xin
Shang, Xiaopeng
Li, Yanxiang
Guo, Zhiwei
Qing, Yashi
Zhao, Shengyong
You, Siming
Li, Wangliang
Keywords: Engineering::Environmental engineering
Issue Date: 2022
Source: Dansawad, P., Yang, Y., Li, X., Shang, X., Li, Y., Guo, Z., Qing, Y., Zhao, S., You, S. & Li, W. (2022). Smart membranes for oil/water emulsions separation: a review. Advanced Membranes, 2, 100039-.
Journal: Advanced Membranes 
Abstract: Oily wastewater poses a significant impact on both environments and human societies. Especially, the treatment of oil/water emulsions for separating oil from water is challenging due to the high stability of oil/water emulsions. Smart membranes, known as stimuli-responsive membranes, are one of the emerging technologies that have been paid wide attention for separating oil/water emulsions in recent years. Smart membranes possess the unique features of switchable wettability between hydrophilicity and hydrophobicity after being triggered by external stimuli and have desired anti-fouling properties. This review summarizes the development of smart membranes for oil/water emulsions separation during the past five years (2018 – present). It was found that solvent stimuli-responsive membranes are the most popular type of smart membranes for oil/water emulsions separation. For multi-stimuli-responsive membranes that can respond to more than one stimulus, future research should focus on developing appropriate fabrication strategies to increase the separation and anti-fouling performances of the membranes. Additionally, surface coating, surface grafting, and copolymer blending are the most popular methods for smart membranes fabrication. However, these methods might not be universally applicable to the different types of stimuli-responsive membranes.
ISSN: 2772-8234
DOI: 10.1016/j.advmem.2022.100039
Schools: School of Mechanical and Aerospace Engineering 
Research Centres: Singapore Membrane Technology Centre 
Nanyang Environment and Water Research Institute 
Rights: © 2022 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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