Direct coating of a DKGM hydrogel on glass fabric for multifunctional oil-water separation in harsh environments

You, Hui; Jin, Yanzi; Chen, Jiucun; Li, Chang Ming

doi:10.1016/j.cej.2017.12.007

Cited by 73 publications

(37 citation statements)

References 55 publications

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“…[91][92][93][94][95][96][97] For example, Chen et al developed a silica gel-coated quartz fiber mesh for oil/water separation under strong acidic and concentrated salt conditions. These harsh conditions cause the oil/water separation to encounter severe challenges.…”

Section: Liquid/liquid Separationmentioning

confidence: 99%

Recent Advances in Bioinspired Gel Surfaces with Superwettability and Special Adhesion

Zhang

Zhao

et al. 2019

Advanced Science

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Engineering surface wettability is of great importance in academic research and practical applications. The exploration of hydrogel‐based natural surfaces with superior properties has revealed new design principles of surface superwettability. Gels are composed of a cross‐linked polymer network that traps numerous solvents through weak interactions. The natural fluidity of the trapped solvents confers the liquid‐like property to gel surfaces, making them significantly different from solid surfaces. Bioinspired gel surfaces have shown promising applications in diverse fields. This work aims to summarize the fundamental understanding and emerging applications of bioinspired gel surfaces with superwettability and special adhesion. First, several typical hydrogel‐based natural surfaces with superwettability and special adhesion are briefly introduced, followed by highlighting the unique properties and design principles of gel‐based surfaces. Then, the superwettability and emerging applications of bioinspired gel surfaces, including liquid/liquid separation, antiadhesion of organisms and solids, and fabrication of thin polymer films, are presented in detail. Finally, an outlook on the future development of these novel gel surfaces is also provided.

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Section: Liquid/liquid Separationmentioning

confidence: 99%

Recent Advances in Bioinspired Gel Surfaces with Superwettability and Special Adhesion

Zhang

Zhao

et al. 2019

Advanced Science

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“…Electroflotation technique induces a separation with the help of electroflotation cell, which has a set of electrodes—a lead anode and a steel screen cathode, that generates flotation particles that carry pollutants up to the surface . Gravity separation uses the force of gravity to remove oil from an oil–water mixture through a hydrogel‐coated filter paper or a mesh . This filtration process can separate out multicomponent mixtures that include oil.…”

Section: Introductionmentioning

confidence: 99%

“…Polymerized hydrogels are also used in demulsifying oil–water mixtures. These hydrogels are considered superhydrophobic or superoleophilic materials that repel water while allowing oil to enter its matrix . Many studies have shown the use of super‐wettable materials for oil removal such as the mesh fabrication using hydrogel coatings .…”

Section: Introductionmentioning

confidence: 99%

“…These hydrogels are considered superhydrophobic or superoleophilic materials that repel water while allowing oil to enter its matrix . Many studies have shown the use of super‐wettable materials for oil removal such as the mesh fabrication using hydrogel coatings . This includes the usage of a biodegradable deacetylated koniac glucomannan (KGM) (DKGS) coat that has a 97.5% oil‐removal rate .…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have shown the use of super‐wettable materials for oil removal such as the mesh fabrication using hydrogel coatings . This includes the usage of a biodegradable deacetylated koniac glucomannan (KGM) (DKGS) coat that has a 97.5% oil‐removal rate . Thermosensitive hydrogel, such as the P(NIPAAm), uses external stimulus of temperature to trigger a hydrophobic state at LCST .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanical milling of thermoresponsive poly(N‐isopropylacrylamide) hydrogel for particle‐oriented oil–water separation

Otanicar

Patel

Sarica

2019

J of Applied Polymer Sci

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The separation of oil and water is widely studied because of the promise of cleaning up oil spills. One pathway is with thermosensitive polymer‐based hydrogels. As hydrogels are raised to the lower critical solution temperature (LCST), they undergo a change of state, from hydrophilic to hydrophobic. Oil–water separation using hydrogels in particle form that are responsive to external stimuli (e.g., magnetic field and temperature) are of great interest. This work uses a novel approach of ball milling dry hydrogel into different sizes and testing oil–water separation efficacy. This study investigated the potential for ball milling P(NIPAAm) bulk hydrogel into small particles size ranges (0–45, 45–90, 90–106, 106–150, and 150+ μm) and the resulting impact on oil–water separation. It was observed that the LCST for the p(NIPAAm) in gel form was 32 °C while increasing to ~40 °C for the powdered form. It was found that the hydrogel particles of different size ranges managed to capture 196, 207, 208, 162, and 124% of its weight in oil, respectively. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48771.

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Recent Advances in Robust Superwettable Membranes for Oil–Water Separation

Lin

Hong

2019

Adv Materials Inter

117

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Over the past decade, much progress has been made in the application of multifunctional membranes with special wettability for the separation of oil–water mixtures. This progress has been driven by frequent oil spill accidents and oily wastewater, which are enormous threats to the vulnerable aquatic environment. The design of permeable superwettable membranes for oil–water separation has been inspired by the development of highly wetting/nonwetting interfaces, but these membranes are susceptible to factors such as mechanical forces, chemical corrosion, biological fouling, and other environmental influences. Considering the complex and harsh environments that superwettable membranes must endure during the separation process, membrane durability against the loss of superwettability is critical in prolonging the life of an oil–water filtration system. Although significant advances in superwettable membranes have been made, the robustness issue remains challenging and has become a focus of many investigations. Covering nearly all publications concerning “robust, durable, usable, resistant, tolerant, or antifouling oil–water separation” published in the last five years, this work is intended as an introduction for new researchers wishing to create durable superwettable membranes for oil–water separation, as well as providing perspectives and guidance for future research in several logical directions.

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Direct coating of a DKGM hydrogel on glass fabric for multifunctional oil-water separation in harsh environments

Cited by 73 publications

References 55 publications

Recent Advances in Bioinspired Gel Surfaces with Superwettability and Special Adhesion

Recent Advances in Bioinspired Gel Surfaces with Superwettability and Special Adhesion

Mechanical milling of thermoresponsive poly(N‐isopropylacrylamide) hydrogel for particle‐oriented oil–water separation

Recent Advances in Robust Superwettable Membranes for Oil–Water Separation

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