Ultrafast diesel oil spill removal by fibers from silk-cotton tree: Characterization and sorption potential evaluation

Oliveira, L. M. T. M.; Oliveira, Laís F.A.M.; Sonsin, Artur F.; Duarte, José L. S.; Soletti, João Inácio; Fonseca, Eduardo J.S.; Ribeiro, Laura; Meili, Lucas

doi:10.1016/j.jclepro.2020.121448

Cited by 27 publications

(5 citation statements)

References 33 publications

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“…The oil sorption capacity ( q ) was calculated using Equation (1):

where m f is the weight of the oil-ridden fiber and m i is the weight of the dry fiber. According to previous studies, tests beyond 30 min are not feasible since sorption of petroleum products usually achieves saturation before this time, and actual oil spill events also require fast removal durations to prevent oil desorption and degradation of sorbent [ 38 , 39 , 40 ].…”

Section: Methodsmentioning

confidence: 99%

“…Suitability to the pseudo-first-order model indicates a reversible system wherein physical sorption is the primary sorption mechanism. Linear fitting involves plotting ln( q e − q t ) vs. t , where q e (g/g) and q t (g/g) are the sorption capacities at equilibrium and specific time intervals, respectively, t is the immersion time, and k 1 is the pseudo-first-order rate constant [ 39 , 43 ]. Meanwhile, the pseudo-second order model indicates both physical and chemisorption in the system.…”

Section: Methodsmentioning

confidence: 99%

“…Meanwhile, the pseudo-second order model indicates both physical and chemisorption in the system. Linear fitting involves plotting t/q t vs. t , obtaining the pseudo-second-order rate constant k 2 [ 39 , 42 ]. Additionally, the initial sorption rate h can be calculated using Equation (3):

…”

Section: Methodsmentioning

confidence: 99%

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Oil Adsorption Kinetics of Calcium Stearate-Coated Kapok Fibers

et al. 2023

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This study used a simple and efficient dipping method to prepare oleophilic calcium stearate-coated kapok fibers (CaSt2-KF) with improved hydrophobicity. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM) confirmed the deposition of calcium stearate particles on the surface of the kapok fibers. This led to higher surface roughness and improved static water contact angle of 137.4°. The calcium stearate-coated kapok fibers exhibited comparable sorption capacities for kerosene, diesel, and palm oil. However, the highest sorption capacity of 59.69 g/g was observed for motor oil at static conditions. For motor oil in water, the coated fibers exhibited fast initial sorption and a 65% removal efficiency after 30 s. At equilibrium, CaSt2-KF attained a sorption capacity of 33.9 g/g and 92.5% removal efficiency for motor oil in water. The sorption kinetics of pure motor oil and motor oil in water follows the pseudo-second-order kinetic model, and the Elovich model further described chemisorption. Intraparticle diffusion and liquid film diffusion were both present, with the latter being the predominant diffusion mechanism during motor oil sorption.

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“…The oil sorption capacity ( q ) was calculated using Equation (1):

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Oil Adsorption Kinetics of Calcium Stearate-Coated Kapok Fibers

et al. 2023

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“…Some methods use surface collectors to separate the oil from seawater, and other more extreme methods consist of burning oil under proper conditions 3 . More recent studies have focused on materials capable of absorbing the oil in their own structure, such as cotton fibers 4 , or even in porous structures, such as polymeric foams 5 , for example.…”

Section: Introductionmentioning

confidence: 99%

Post-Consumer Polyurethane Foams Hydrophobization Through Surface Modifications for Oil Spill Sorption

2023

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To increase oil sorption, polyurethane foams were modified with MoS 2 , ZnO grafting and/or hexadecanoic acid coating. The foams were characterized by Scanning Electron Microscopy + Energy Dispersive X-ray Spectroscopy and Contact Angle techniques. Three sorption tests were performed.In tests with 100% water, the ZnO-PC modification showed a reduction of 35.7% in the seawater sorption when compared to Un-PC. In tests with 100% oil, there was a 29-fold increase in sorption (more than 2803%) of S46 lubricant oil when Un-PC performance was compared with ZnO-PC.In tests on the multicomponent systems, the lowest seawater sorption was 0.01 ± 0.00 g.g -1 (HA-PC), 0.08 ± 0.01 g.g -1 (Un-PC), and 1.39 ± 0.02 g.g -1 (Un-PC) for 20W40 engine oil, S46 lubricating oil, and diesel, respectively. The highest oil sorption in the systems was 41.34 ± 1.02 g.g -1 (HA-PC), 32.81 ± 0.31 g.g -1 (MoS 2 -PC), and 14.78 ± 0.27 g.g -1 (ZnO-PC) for diesel, S46 lubricating oil, and 20W40 engine oil, respectively. The reuse tests indicated that even after 10 cycles, the ZnO-PC foam kept its sorption capacity unchanged. Post-consumer foams proved to be effective in the sorption of different oils spilled into seawater, especially those grafted with ZnO rods or impregnated with MoS 2 .

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“…Recently, a wide variety of advanced and novel absorbent materials possessing oleophilic and hydrophobic surfaces with excellent adsorption performance have been synthesized for the separation and recovery of oil from water. Among such absorbents are fiber sheets [ 25 , 26 , 27 , 28 , 29 ], alumina [ 30 , 31 ], zeolites [ 32 , 33 , 34 ], silica [ 35 ], polypropylene [ 36 , 37 , 38 , 39 ], and polystyrene [ 40 , 41 , 42 , 43 ]. Such sorbents have certain disadvantages that limit their absorption efficiency, including their low sorption capacities, low recovery efficiencies, production of toxic wastes, and poor buoyancy characteristics.…”

Section: Introductionmentioning

confidence: 99%

Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil–Water Separation Processes

et al. 2021

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The vast demand for petroleum industry products led to the increased production of oily wastewaters and has led to many possible separation technologies. In addition to production-related oily wastewater, direct oil spills are associated with detrimental effects on the local ecosystems. Accordingly, this review paper aims to tackle the oil spill cleanup issue as well as water separation by providing a wide range of graphene-based technologies. These include graphene-based membranes; graphene sponges; graphene-decorated meshes; graphene hydrogels; graphene aerogels; graphene foam; and graphene-coated cotton. Sponges and aerogels modified by graphene and reduced graphene oxide demonstrated effective oil water separation owing to their superhydrophobic/superoleophilic properties. In addition, oil particles are intercepted while allowing water molecules to penetrate the graphene-oxide-coated metal meshes and membranes thanks to their superhydrophilic/underwater superoleophobic properties. Finally, we offer future perspectives on oil water separation that are hindering the advancements of such technologies and their large-scale applications.

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Ultrafast diesel oil spill removal by fibers from silk-cotton tree: Characterization and sorption potential evaluation

Cited by 27 publications

References 33 publications

Oil Adsorption Kinetics of Calcium Stearate-Coated Kapok Fibers

Oil Adsorption Kinetics of Calcium Stearate-Coated Kapok Fibers

Post-Consumer Polyurethane Foams Hydrophobization Through Surface Modifications for Oil Spill Sorption

Recent Developments and Advancements in Graphene-Based Technologies for Oil Spill Cleanup and Oil–Water Separation Processes

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