Development of facile superhydrophobic coating on rockwool for oil–water separation

Pandit, Sapan Kumar; Yadav, Kushal; Chauhan, Poonam; Kumar, Ayush

doi:10.1016/j.surfin.2023.102962

Cited by 4 publications

(2 citation statements)

References 35 publications

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“…The stretching vibration peaks of HS-4 at 2857−2924 cm −1 indicate C−H bonds, confirming that HD-111 was successfully grafted onto the quartz. 22,38 Meanwhile, both HS-4 and S-4 exhibit Si−O− Si bond characteristics near 1090 cm −1 , 37 which are derived from the quartz sand and the self-cross-linking of HD-111. Furthermore, the TGA curve confirmed that HD-111 was grafted onto different sizes of quartz sand.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…As we all know, superwetting material is an advanced oil–water separation material. − By changing the surface free energy and roughness of the materials, the researchers constructed superhydrophobic materials, , underoil superhydrophobic materials, and underwater superoleophobic materials. , These materials are widely used in the field of oil–water separation by regulating the flow of fluid through capillary forces. Among them, the underoil superhydrophobic material is applied in the separation of water-in-oil emulsions and high-density oil and water mixtures.…”

Section: Introductionmentioning

confidence: 99%

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Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Lin,

Zhang,

Chen

et al. 2024

Langmuir

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To achieve the green, sustainable, and controllable recovery of oil−water resources and to address the limited functionality of single superwet materials in oil− water separation, this study reports a multifunctional oil−water separation strategy by compositing the underwater superoleophobic and underoil superhydrophobic materials (HS). The underwater superoleophobic quartz sands with an oil contact angle of 152.68°were prepared by adjusting the particle size. This material demonstrated a water flux of 4688 L m −2 h −1 and a low-density oil and water mixture separation efficiency of 98.6%, which remained above 97.9% over 50 cycles. It was effective in separating oil-in-water emulsions with a separation efficiency of >99%. For HS, quartz sands were modified with dodecyltrimethoxysilane. The optimized HS-4 exhibited superhydrophobic properties with a water contact angle of 157.06°. It achieved an oil flux of 5775 L m −2 h −1 and a water and dichloromethane mixture separation efficiency of 98.4%. Additionally, they exhibited significant potential in the separation of water-inoil emulsions. Furthermore, by placing the underwater superoleophobic and underoil superhydrophobic units at the bottom of the filter, we achieved cyclic separation of high-density oil and water mixtures, low-density oil and water mixtures, water-in-oil emulsions, and oil-in-water emulsions. The separation efficiency consistently exceeded 96.5% over 10 cycles. In addition, the oil−water separation mechanism of underwater oleophobic and underoil hydrophobic materials was demonstrated by the relative concentration distribution of water and oil with molecular dynamics simulations. This intelligent oil− water separation method marks a significant advancement in the sustainable separation of diverse oil−water mixtures.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Lin,

Zhang,

Chen

et al. 2024

Langmuir

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Exploring the viability of anti-microbial, superhydrophobic jute bags as an approach to sustainable food packaging system

Srishti,

Kumar

2024

Food Chemistry

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Preparation of Superhydrophobic and Multifunctional Sponges for Oil/Water Separation and Oil Absorption

Han,

Lv,

et al. 2024

Langmuir

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For settling the recycling problem of waste polyurethane sponges (PU) and environment pollution of oil spills simultaneously, this work exploited the multifunctional superhydrophobic PU materials via the dip-coating method, which were prepared by anchoring modified Fe 3 O 4 and expandable graphite (EG) on PU sponges under the adhesion effect of polydimethylsiloxane (PDMS). The water contact angle and sliding angle of as-prepared PU sponges reached 154.1 ± 1.6 and 8°, respectively. Most importantly, the superhydrophobic PU sponges were endowed with the multipath oil treatment ability, which consisted of magnetically driven, gravity-driven, peristaltic pump-driven, and photothermally driven modes. Besides, the light oil absorption capacity, separation flux, and efficiency for superhydrophobic PU sponges reached 23.9 g/g, 27779 L m −2 h −1 , and 99.5%, respectively. Owing to the photothermal conversion ability of Fe 3 O 4 and EG, the temperature of superhydrophobic PU sponges was raised to 71.5 °C within 233 s under 1.2 solar irradiation (1200 W/m 2 ), demonstrating its absorption potential for high-viscosity crude oils. In addition, the prepared sponges exhibited good chemical/ mechanical stability, self-cleaning, and flame retardancy. In a nutshell, this article has evolved an environmentally benign and practical method for fabricating the multifunctional materials in oil spill treatment, which will efficiently accomplish the targets of low carbon and environmental management.

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Development of facile superhydrophobic coating on rockwool for oil–water separation

Cited by 4 publications

References 35 publications

Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Intelligent Devices Harnessing Underwater Superoleophobic and Underoil Superhydrophobic Quartz Sands for the Separation of Diverse Stratified and Emulsified Water–Oil Mixtures

Exploring the viability of anti-microbial, superhydrophobic jute bags as an approach to sustainable food packaging system

Preparation of Superhydrophobic and Multifunctional Sponges for Oil/Water Separation and Oil Absorption

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