Adsorption of Spilled Oil from Seawater by Waste Plastic

Abstract

Résumé -Rémédiation de pollution par l'huile par des déchets plastiques -Deux problèmes écologiques sont considérés dans ce travail. Un des problèmes est de trouver une application utile des déchets de plastiques, polyéthylène (PE) et polypropylène (PP), qui augmentent jour après jour partout dans le monde. Le deuxième problème est la rémédiation de pollution par l'huile dans des environnements aquatiques. Nous avons utilisé le PE et les poudres feuilles de PP pour absorber l'huile dans de l'eau, par simple contact pendant quelques minutes. L'effet sur l'activité des polymères de soumettre les poudres et les feuilles à une faible dose de radiation γ (3 Mrad) a été étudiée. L'examen des polymères avant et après absorption d'huile par calorimétrie différentielle (DSC) et par microscope électronique de balayage (MEB) a permis d'éclaircir les comportements de ces polymères. Abstract -Adsorption of Spilled Oil from Seawater by Waste Plastic -Two environmental problems are encountered in this work. A solution of one problem is to find a useful application of the waste plastics; polyethylene (PE) and polypropylene (PP), which increases day after day all over the world.The second problem is the oil spill in aquatic locations. We used PE and PP waste powders and sheets to sorb the oil from water, via simple contacting for few minutes. The effect of subjecting the powders and sheets to a low dose of γ-irradiation (3 Mrad) on the activation of the current polymers was investigated. Differential scanning calorimetric (DSC) and scanning electron microscopic (SEM) examinations of the neat and oil sorbing polymers were performed to throw light on the behaviours of these polymers.

Cyclohexene Hydroconversion Using Monometallic and Bimetallic Catalysts Supported on γ‐Alumina

“…19 Iridium is less active than Platinum on H-zeolite supported catalysts for paraffins hydroisomerisation but more active for hydrogenolysis. 15 Similarly, using the Ir/Al 2 O 3 catalyst ( Fig. 1), CHE hydrogenation is lower than that on the Pt/Al 2 O 3 catalyst.…”

“…This variation is a matter of the intrinsic activities of these metals that are a matter of their electronic configuration rather than of their dispersion in the alumina support (Table 1). 14 The activities of Pt and Ir on Al 2 O 3 for CHE hydrogenation, 14,15 as well as for benzene hydrogenation 16 are significantly different although their dispersions in alumina are practically indistinguishable. Nevertheless, comparing the present data using the Pt/Al 2 O 3 catalyst ( Fig.…”

Overview on the Effect of Particle Size on the Performance of Wood Based Adsorbent

“…Effect of particle size is a complex phenomenon associated with significant change in physical and chemical properties of substance due to direct reduction of the particles (grains, crystallites), the contribution of the interface to system properties and due to particle size being commensurate with the physical parameters of length dimension [2][3][4][5][6]. Size effects are observed with the reduction in size of structural elements, particles, crystallites and grain below a certain threshold.…”

Evaluation of flexible postconsumed polyurethane foams modified by polystyrene grafting as sorbent material for oil spills

“…Reusability is another desired characteristic of oil sorbents because the life cycle of materials may be extended 22, 23. Therefore, two extra sorption cycles were carried out for the PU‐A, PU‐g‐PS‐1, and PU‐g‐PS‐5 samples in salty water.…”