Fabrication of superhydrophobic polyurethane sponge coated with oil sorbent derived from textile sludge for oily wastewater remediation

Sarup, Rupal; Sharma, Mahima; Behl, Kannikka; Kumar, Pankaj; Kumar, Pankaj; Ojha, Sunil; Nigam, Subhasha; Joshi, Monika

doi:10.1016/j.enmm.2022.100675

Cited by 6 publications

(3 citation statements)

References 47 publications

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“…The advancement of material civilization is inseparable from the fossil energy production, industrial manufacturing, engineering construction, home decoration, and other related sectors. − At the same time, there are also some problems such as marine oil pollution resulting from oil leakage from tankers or vessels, improper discharge of oily wastewater in industrial and daily activities, − as well as corrosion of metallic materials, − which not only cause significant economic losses and pose potential risks to people’s lives but also inflict substantial damage on the environment and greatly affected the Earth’s ecosystem. ,,− Therefore, it is significant to seek effective methods for the efficient separation of oil–water mixtures and improvement of anticorrosion of metals.…”

Section: Introductionmentioning

confidence: 99%

Facile and Rapid Fabrication of (trifluoropropyl) Silsesquioxanes/Ethyl Cyanoacrylate-Based Hybrid Superhydrophobic Coatings for Oil–Water Separation and Metal Anticorrosion

Zhang,

Ge,

Liu

2024

ACS Appl. Eng. Mater.

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In this paper, fluorosilsesquioxanes (F-SQs) were first synthesized by hydrolysis condensation of (3,3,3-trifluoropropyl) trimethoxysilane. Then, F-SQs were blended with ethyl cyanoacrylate (ECA) to prepare a hybrid matrix material that was coated on the surface of sponge or copper foil to rapidly form hydrophobic coatings by anionic polymerization of ECA, which were environmentally friendly, efficient, and low cost. The resulting low surface energy materials could be used for oil−water separation and metal corrosion protection. The structure composition and properties characterization of the surface of coated polyurethane (PU) sponges and copper foils were analyzed by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, water contact angle, and electrochemical tests. Coated PU sponges with excellent mechanical and chemical stability exhibit superhydrophobic properties and can efficiently separate oil and water mixtures with an efficiency over 99%. Compared with bare copper foil, the coated copper foil exhibited lower corrosion current (I corr ) and higher impedance modulus (|Z| 0.01 Hz ) after immersing in a 3.5 wt % NaCl solution for 24 h, offering excellent anticorrosion properties. Moreover, when the exposure time of the coating in salt solution was extended to 21 days, the |Z| 0.01 Hz of the coating remained approximately 10 times higher than that of the Cu matrix, demonstrating exceptional long-term corrosion resistance. This simple and environmentally friendly route to fabricate hydrophobic materials makes it possible for large-scale oil−water separation and metal corrosion protection.

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Section: Introductionmentioning

confidence: 99%

Facile and Rapid Fabrication of (trifluoropropyl) Silsesquioxanes/Ethyl Cyanoacrylate-Based Hybrid Superhydrophobic Coatings for Oil–Water Separation and Metal Anticorrosion

Zhang,

Ge,

Liu

2024

ACS Appl. Eng. Mater.

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“…Therefore, biochar has the potential to be used in the treatment of oily wastewater as an inexpensive adsorbent. For example, Sarup et al [ 13 ] reported that a superhydrophobic-oleophilic polyurethane sponge adsorbed oil from wastewater, in which the sponge was refurbished by biochar deriving from textile sludge.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater

Shen,

Jin,

Chen

et al. 2023

Materials

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Oil agents produced from the degreasing treatment of synthetic fibers are typical pollutants in wastewater from printing and dyeing, which may cause large-scale environmental pollution without proper treatment. Purifying oily dye wastewater (DTY) at a low cost is a key problem at present. In this study, biochar microspheres with oil removal ability were prepared and derived from waste bamboo chips using the hydrothermal method. The structure of the biochar microsphere was regulated by activation and modification processes. Biochar microspheres were characterized, and their adsorption behaviors for oily dye wastewater were explored. The results show that the adsorption efficiency of biochar microspheres for oily dye wastewater (DTY) was improved significantly after secondary pyrolysis and the lauric acid grafting reaction. The maximum COD removal quantity of biochar microspheres for DTY was 889 mg/g with a removal rate of 86.06% in 30 min. In addition, the kinetics showed that chemisorption was the main adsorption manner. Considering the low cost of raw materials, the application of biochar microspheres could decrease the cost of oily wastewater treatment and avoid environmental pollution.

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“…Therefore, biochar has the potential to be used in the treatment of oily wastewater as an inexpensive adsorbent. For example, Sarup et al [13] reported that a superhydrophobicoleophilic polyurethane sponge adsorbed oil from wastewater, in which the sponge was refurbished by biochar deriving from textile sludge.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Biochar Composite Microspheres and Their Removal Ability for Oil Agents in Dyeing Wastewater

Lu¹,

Jin²,

Chen³

et al. 2023

Preprint

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Oil agents produced from degreasing treatment of synthetic fibers are typical pollutants in printing and dyeing wastewater, which may cause large-scale environmental pollution without proper treatment. How to purify oily dye wastewater with low cost is a key problem at present. In this study, the biochar microspheres with oil removal ability were prepared deriving from waste bamboo chips using hydrothermal method. The structure of biochar microsphere was regulated by the activation and modification processes. The biochar microspheres were characterized and their adsorption behaviors for oily dye wastewater were explored. The results showed that the adsorption efficiency of biochar microspheres for oily dye wastewater (DTY) was improved significantly after the secondary pyrolysis and lauric acid grafting reaction. The maximum COD removal quantity of biochar microspheres for DTY was 889 mg/g with removal rate of 86.06% in 30 min. Besides, the kinetics showed that the chemisorption was the main adsorption manner. The application of biochar microspheres can decrease the costs of oily wastewater treatment and avoid environmental pollution.

show abstract

Fabrication of superhydrophobic polyurethane sponge coated with oil sorbent derived from textile sludge for oily wastewater remediation

Cited by 6 publications

References 47 publications

Facile and Rapid Fabrication of (trifluoropropyl) Silsesquioxanes/Ethyl Cyanoacrylate-Based Hybrid Superhydrophobic Coatings for Oil–Water Separation and Metal Anticorrosion

Facile and Rapid Fabrication of (trifluoropropyl) Silsesquioxanes/Ethyl Cyanoacrylate-Based Hybrid Superhydrophobic Coatings for Oil–Water Separation and Metal Anticorrosion

Preparation of Biochar Composite Microspheres and Their Ability for Removal with Oil Agents in Dyed Wastewater

Preparation of Biochar Composite Microspheres and Their Removal Ability for Oil Agents in Dyeing Wastewater

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