Egyptian crude oil sorbent based on coated polyurethane foam waste

Keshawy, Mohamed; Farag, Reem K.; Gaffer, Amany

doi:10.1016/j.ejpe.2019.11.001

Cited by 22 publications

(24 citation statements)

References 29 publications

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“…Prior to surface modification, PU foam exhibits higher absorption capacity towards hydrocarbon (i.e., chloroform, acetone, and cyclohexane) than edible oil. Such a phenomenon is ascribed to the lower viscosity of hydrocarbon (see Table 3 ) that allows it to diffuse at a faster rate into the PU foam than oil [ 8 , 18 ]. Because of this reason, PU foam swells rapidly upon contact with organic solvents.…”

Section: Resultsmentioning

confidence: 99%

“…Li et al [ 3 ], on the other hand, performed a 6-h chemical reaction to graft the surface of PU foam with oleophilic monomers such as lauryl methacrylate (LMA), butyl methacrylate (BMA), and styrene (St) followed by thorough ethanol rinsing to remove impurities. The hexadcene (HD)/LMA-coated PU foam synthesized by Keshawy et al [ 8 ], meanwhile, required 12-h treatment in an oven at 100 °C after the PU foam was soaked in the HD/LMA mixture several times.…”

Section: Introductionmentioning

confidence: 99%

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A Green Approach to Modify Surface Properties of Polyurethane Foam for Enhanced Oil Absorption

Roslan

Lau

et al. 2020

Polymers

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The non-selective property of conventional polyurethane (PU) foam tends to lower its oil absorption efficiency. To address this issue, we modified the surface properties of PU foam using a rapid solvent-free surface functionalization approach based on the chemical vapor deposition (CVD) method to establish an extremely thin yet uniform coating layer to improve foam performance. The PU foam was respectively functionalized using different monomers, i.e., perfluorodecyl acrylate (PFDA), 2,2,3,4,4,4-hexafluorobutyl acrylate (HFBA), and hexamethyldisiloxane (HMDSO), and the effect of deposition times (1, 5 and 10 min) on the properties of foam was investigated. The results showed that all the modified foams demonstrated a much higher water contact angle (i.e., greater hydrophobicity) and greater absorption capacities compared to the control PU foam. This is due to the presence of specific functional groups, e.g., fluorine (F) and silane (Si) in the modified PU foams. Of all, the PU/PHFBAi foam exhibited the highest absorption capacities, recording 66.68, 58.15, 53.70, and 58.38 g/g for chloroform, acetone, cyclohexane, and edible oil, respectively. These values were 39.19–119.31% higher than that of control foam. The promising performance of the PU/PHFBAi foam is due to the improved surface hydrophobicity attributed to the original perfluoroalkyl moieties of the HFBA monomer. The PU/PHFBAi foam also demonstrated a much more stable absorption performance compared to the control foam when both samples were reused for up to 10 cycles. This clearly indicates the positive impact of the proposed functionalization method in improving PU properties for oil absorption processes.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Green Approach to Modify Surface Properties of Polyurethane Foam for Enhanced Oil Absorption

Roslan

Lau

et al. 2020

Polymers

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“…Accidents involving tankers and vessels, and leakages in storage tanks at petrochemical plants, terminals, distribution points and fuel stations can release significant amounts of oil and its derivatives, such as naphtha, gasoline, kerosene, LPG, diesel oil and fuel oil, into the environment, which could lead to the contamination of soil, water and air [1][2][3][4]. Oil and its by-products form an insoluble layer on the water surface and hinder the aeration and the natural illumination of water bodies, thereby causing harm to the fauna and flora of the exposed environment [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…They can be defined as a class of porous polymers, where the dispersion of a gas during the polymerization process gives rise to the formation of small air bubbles or cells interconnected in a three-dimensional structure. PU foams can be produced with high concentration of open cells, and their viscoelastic properties allow for an efficient sorption and desorption of oil, thus allowing the collection, transportation and recovery of the oil and the subsequent reuse of the foam [3,19]. In addition, PU foams are materials that can be produced with low energy consumption and low investment equipment [20,21].…”

Section: Introductionmentioning

confidence: 99%

Sorbent system based on organosilane-coated polyurethane foam for oil spill clean up

et al. 2020

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In this study, flexible and open cell polyurethane foams were formulated and chemically modified with organosilane to be used as a sorbent system for oil spill cleanup. Six polyurethane foams with different densities and three oil types with different viscosities were investigated. Moreover, sorbents were characterized based on their surface modification and sorption capacities. The main results indicated that the surface treatment on the solid fraction of the foam was effective, observing by the contact angle, thereby increasing the hydrophobicity of the samples. Cell morphology and foam density directly affect the sorption capacity of foams. Foams with high densities are indicated for oils with low viscosity, and foams with low densities are indicated for viscous oils. The oil sorption capacity also depends on oil viscosity (and temperature).

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“…[10][11][12] 폴리우레탄폼을 활용한 유흡착재 개발과 관련된 국외 연구를 살펴보면, 폐폴리우레탄폼 표면에 코팅된 첨가제에 따른 유흡착능 평가에 집중하였고, 첨 가제 없이 제작한 유흡착재 연구는 부족하였다. [13][14][15] 국 내의 경우, 폐폴리우레탄폼을 재가공하여 유흡착재를 제 작한 연구가 있으나 유흡착재의 흡유능보다 폐폴리우레 탄폼 함량에 따른 물성 변화에 초점을 맞추었다. 16,17) 본 .…”

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Evaluation of Polyurethane Foam Waste as a Potential Sorbent for Marine Oil Spill Cleanup

Youn¹,

Song²,

Kwon³

et al. 2020

J Environ Anal Health Toxicol

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The risk of marine pollution caused by oil and organic solvent spill accidents has risen due to increased transport activities in coastal areas. Therefore, the development of cost-efficient and effective oil sorbents has become increasingly important. Notably, polyurethane foam (PUF) waste, a byproduct derived from the manufacture of various commercial products such as car seats and couches, cannot be easily degraded in the environment and therefore needs to be recycled. This study sought to evaluate the potential of PUF waste as an oil sorbent, as well as to determine the optimal conditions for its implementation. Here, the oil (diesel, MGO, crude oil, and bunker C) and organic solvent (xylenes and toluene) sorption rates of PUF waste (i.e., couch and car seat manufacture waste) was comprehensively assessed. Our study determined that PUF waste satisfied oil and water sorption standards (> 10 g/g for oil sorption, < 1 g/g for water sorption) for all kinds of oils and organic solvents tested herein, except for bunker C. Moreover, the amount of oil sorbed into PUF was largely governed by its density and sorption time. Compared to existing oil sorbents, PUF waste could be over 90% more cost-efficient due to its reusability. In conclusion, PUF waste could be repurposed as an effective and low-cost oil sorbent for oil or organic solvent spills (except for bunker C).

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Egyptian crude oil sorbent based on coated polyurethane foam waste

Cited by 22 publications

References 29 publications

A Green Approach to Modify Surface Properties of Polyurethane Foam for Enhanced Oil Absorption

A Green Approach to Modify Surface Properties of Polyurethane Foam for Enhanced Oil Absorption

Sorbent system based on organosilane-coated polyurethane foam for oil spill clean up

Evaluation of Polyurethane Foam Waste as a Potential Sorbent for Marine Oil Spill Cleanup

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