Efficient adsorption of oil in water by hydrophobic nonwoven fabrics coated with cross‐linked polydivinylbenzene fibers

Abstract

Background Oil pollution of water causes extensive damage to the environment and human health. Adsorption techniques are environmentally friendly and relatively feasible to treat oil contamination and reclaim oil resources, and it is essential to develop adsorbents that have high adsorption capacity for oil which can be recycled and regenerated conveniently to save money and resources. Results Hydrophobic nonwoven fabrics coated with polydivinylbenzene nanofibres (HNF‐PDVB) were constructed by a one‐step cation polymerization reaction. The results showed that the optimal concentration of OTS (octadecylsilane) for the modification of nonwoven fibers was 1.22 mL L–1of n‐hexane. The HNF‐PDVB showed relatively good performance in adsorbing oil from water, with adsorption capacity as high as 7.5 g g–1. Freundlich and Dubinin–Radushkevic isotherms fitted well with the experimental data. The kinetic data fitted better to the pseudo‐second‐order and intraparticle diffusion models, and the parameters indicated that the adsorption by HNF‐PDVB involved macropores that contributed to the rapid and high‐capacity adsorption, as well as micropores that resulted in the diffusion of oil in the nanofibres. Thermodynamics studies revealed that the adsorption was spontaneous and endothermic, with an increasing performance when the temperature rose from 10 to 50 °C. The material possessed good stability and the adsorption capacity reduced from 7.5 g g–1 to 6.6 g g–1 after ten cycles of repeated use, recovered by squeezing and ethanol extraction. Conclusion This work demonstrates that the new hydrophobic nonwoven fabrics have the potential to be used for elimination of pollution from oil wastewater. © 2018 Society of Chemical Industry

Enhanced Sorption for the Oil Spills by SDS-Modified Rice Straw

“…Firstly, the straw was pretreated with acid, and the acid cellulose and lignin formed by cellulose and lignin on the surface of the rice straws reacted with acid, which made the cellulose and lignin have strong electron withdrawing properties and produce unstable cations on the surface of the fiber [30,31]. There are a few hydrophobic and lipophilic adsorbents [9][10][11][12][13][14], including magnetic particles [15][16][17], textile [18][19][20][21], and modified commercial sponges [22][23][24], which have been applied for oil adsorption. At present, materials with high oil absorption are generally industrially synthesized as high oil-absorbing resin materials [25].…”

“…There are a few hydrophobic and lipophilic adsorbents [ 9 , 10 , 11 , 12 , 13 , 14 ], including magnetic particles [ 15 , 16 , 17 ], textile [ 18 , 19 , 20 , 21 ], and modified commercial sponges [ 22 , 23 , 24 ], which have been applied for oil adsorption. At present, materials with high oil absorption are generally industrially synthesized as high oil-absorbing resin materials [ 25 ].…”

Review of Absorption Oil Content in Water Injection

“…Before doing the removal hydrophobic non-woven is soaked in OTS (Octadecysilane) for 12 hours. Then, add hydrophobic non-woven into the fluid that contains emulsion oil-water [56]. There are some methods are same origins like nanocomposites from chemical material Fe3O4/SiO2, Fe3O4/TiO2, and 16 Fe3O4/Chitosan nanocomposites [57], superhydrophobic nanodiamonds method is added hydroxyl, generally, it has the same procedures like nanotubes, however, nanodiamonds using alkaline liquid (PH 8.5) [58], nanofibrous method combine with electrospun fibres, it used to reduce wettability value from oil so that easier in removal [59].…”

Solar-Heating Crassula perforata-Structured Superoleophilic CuO@CuS/PDMS Nanowire Arrays on Copper Foam for Fast Remediation of Viscous Crude Oil Spill

“…A series of hydrophobic and oleophilic absorbents, , such as magnetic particles, − fabric, − carbon-based aerogels, − and modified commercial sponges, − have been developed for oil adsorption. They are all considered as effective strategies to meet the above-mentioned oil spill treatment standards.…”