Unpowered oil absorption by a wettability sponge based oil skimmer

Liu, Ziai; Wang, Xuyue; Gao, Mingqian; Song, Jinlong; Huang, Liu; Liu, Jiyu; Liu, Xin; Xu, Wenji; Zhao, Danyang

doi:10.1039/c6ra19571g

Cited by 23 publications

(8 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For an investigation of the stability of SHB‐SOL meshes, researchers tested using their self‐made equipment 51 . Here, the abrasion test was conducted by a self‐made device, as shown in Figure 4b; the mesh was placed on an 800‐grit abrasive paper with a 100‐g weight on its surface and then pulled with a constant velocity in one direction; the distance of one circle is 20 cm; after being pulled for 5 m, the CAs of meshes that were etched for 1 and 3 min demonstrated an upward trend, whereas the others decreased, which can be seen in Figure 4a.…”

Section: Resultsmentioning

confidence: 99%

“…For an investigation of the stability of SHB-SOL meshes, researchers tested using their self-made F I G U R E 3 (a-e) The surface morphologies of the copper mesh etching for 0, 1, 3, 5, and 8 min with different magnifications; (f 1 -f 3 ) activated carbon powders with different magnifications equipment. 51 Here, the abrasion test was conducted by a self-made device, as shown in Figure 4b; the mesh was placed on an 800-grit abrasive paper with a 100-g weight on its surface and then pulled with a constant velocity in one direction; the distance of one circle is 20 cm; after being pulled for 5 m, the CAs of meshes that were etched for 1 and 3 min demonstrated an upward trend, whereas the others decreased, which can be seen in Figure 4a. The surface morphology was became rougher after abrasive and result in the increased CAs (the samples of etched for 1 min and 3 min).…”

Section: Surface Wettabilitymentioning

confidence: 99%

See 1 more Smart Citation

Sandwiched meshes with superwettability for oil/water separation and heavy metal ion absorption

Dong

Yang

Qian

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Oil/water separation and heavy metal ion adsorptions have become a worldwide challenge due to the global industrial development and its indiscriminate discharge. Large numbers of methods have been developed to solve the problems, among which using superwettability material to selective separation is one of an efficient approach. However, this method cannot adsorb the heavy metal ions from water. Herein, we developed superwettability meshes that can not only separate oil/water after modification but also adsorb heavy metal ions before modification, which is just sandwiching an adsorbent layer between the meshes. The results showed that this method can separate most of oil/water mixtures with high efficiency (higher than 95%) as well as favorable recyclability. Besides, it can separate oil/water emulsion easily. In addition, the carbon layer between the meshes can adsorb heavy metal ions such as Ni(II), Cr(VI) (in the form of Cr 2 O 7 2−), and Cd(II) with high adsorption efficiency. More importantly, the carbon layer can be replaced by any other powers such as metal-organic frameworks (MOFs) and magnetic particle to extend the applications. We believe that such a novel and simple approach can provide some new perspectives to settle the environmental problems.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Surface Wettabilitymentioning

confidence: 99%

Sandwiched meshes with superwettability for oil/water separation and heavy metal ion absorption

Dong

Yang

Qian

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…Traditional methods for treating water and oil pollution can be broadly divided into three categories: biodegradation [5] , chemical treatment [6,7] and physical separation by skimmer and oil absorption felt, etc. [8,9] . However, these methods are generally characterized by low separation efficiency, poor oil-water selectivity, low reusability and high cost.…”

Section: Introductionmentioning

confidence: 99%

Dodecyl Mercaptan Functionalized Copper Mesh for Water Repellence and Oil-water Separation

et al. 2021

View full text Add to dashboard Cite

Reckless discharge of industrial wastewater and domestic sewage as well as frequent leakage of crude oil have caused serious environmental problems and posed severe threat to human survival. Various nature inspired superhy-drophobic surfaces have been successfully applied in oily water remediation. However, further improvements are still urgently needed for practical application in terms of facile synthesis process and long-term durability towards harsh environment. Herein, we propose a simple one-step dodecyl mercaptan functionalization method to fabricate Super-hydrophobic-Superoleophilic Copper Mesh (SSCM). The prepared SSCM possesses excellent water repellence and oil affinity, enabling it to successfully separate various oil-water mixtures with high separation efficiency (e.g., > 99% for hexadecane-water mixture). The SSCM retains high separating ability when hot water and strong corrosive aqueous solutions are used to simulate oil-water mixtures, indicating remarkable chemical durability of the dodecyl mercaptan functionalized copper mesh. Additionally, the efficiency can be well maintained during 50 cycles of separation, and the water repellence is even stable after storage in air for 120 days, demonstrating the reusability and long-term stability of the SSCM. Furthermore, the functionalized mesh also shows good mechanical robustness towards abrasion by sandpaper, and oil-water separation efficiency of > 96% can be obtained after 10 cycles of abrasion. The reported one-step dodecyl mercaptan functionalization could be a simple method for increasing the water repellence of copper mesh, and thereby be a great candidate for treating large-scale oily wastewater in harsh environments.

show abstract

“…Over the past few years, oil–water separation has become an increasingly important and urgent issue in modern chemical industrial process and environmental protection due to increasing industrial oily wastewater, as well as frequent oil spill accidents . Many different approaches have been utilized for the oil–water separation purposes, including combustion, filtration, oil skimmers, magnetic separations, flotation technologies, oil‐absorbing materials, and so on. Most of these methods involve harsh conditions and have a limitation for the types of oily water being treated.…”

Section: Introductionmentioning

confidence: 99%

Energy‐Efficient Oil–Water Separation of Biomimetic Copper Membrane with Multiscale Hierarchical Dendritic Structures

Han

et al. 2017

Small

View full text Add to dashboard Cite

Membrane-based materials with special surface wettability have been applied widely for the treatment of increasing industrial oily waste water, as well as frequent oil spill accidents. However, traditional technologies are energy-intensive and limited, either by fouling or by the inability of a single membrane to separate all types of oil-water mixtures. Herein, a biomimetic monolayer copper membrane (BMCM), composed of multiscale hierarchical dendritic structures, is cleverly designed and successfully fabricated on steel mesh substrate. It not only possesses the ability of energy-efficient oil-water separation but also excellent self-recovery anti-oil-fouling properties (<150 s). The BMCM even keeps high separation efficiency (>93%) after ten-time cycling tests. More importantly, it retains efficient oil-water separation capacity for five different oils. In fact, these advanced features are benefited by the synergistic effect of chemical compositions and physical structures, which is inspired by the typical nonwetting strategy of butterfly wing scales. The findings in this work may inspire a facile but effective strategy for repeatable and antipollution oil-water separation, which is more suitable for various applications under practical conditions, such as wastewater treatment, fuel purification, separation of commercially relevant oily water, and so forth.

show abstract

Unpowered oil absorption by a wettability sponge based oil skimmer

Abstract: Superhydrophobic–superoleophilic sponges equipped on oil skimmers are obtained after being immersed in a copper stearate solution.

Cited by 23 publications

References 34 publications

Sandwiched meshes with superwettability for oil/water separation and heavy metal ion absorption

Sandwiched meshes with superwettability for oil/water separation and heavy metal ion absorption

Dodecyl Mercaptan Functionalized Copper Mesh for Water Repellence and Oil-water Separation

Energy‐Efficient Oil–Water Separation of Biomimetic Copper Membrane with Multiscale Hierarchical Dendritic Structures

Contact Info

Product

Resources

About