Evaluation of Natural and Synthetic Sorbents for Oil Spill Clean-up Applications
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Oil products have become an important commodity in the world. However, the world oil demand has been increased due to the growing global population, and as long as oil transportation worldwide continues to increase, many communities are at high risk of oil products spill disasters, which can produce severe damage to the ecosystem and loss to human society. Different response methods have been used for removing oil from the sea surface, such as dispersants, mechanical recovery methods. But, these kinds of methods have several disadvantages that are difficult to address including their complicated operation, high cost, oxygen content, organic species, and high energy required. Currently, sedimentation, filtration, and absorption are physical methods that have been used for cleaning up oil-polluted water. Of these methods, absorption methods are received a lot of critical attention because of their simple operation, low energy consumption, high efficiency and superiority with organic materials that are difficult to degrade. This thesis evaluated the behavior of six fibers with respect to their behavior as sorbents for oil products. The fibers were used to build a porous medium and to study the efficiency for each fiber materials applying for oil products or water absorption applications. Methods for characterizing the fiber materials were studied and experiments were performed to evaluate the efficiency of these fiber. The research enabled selection of fiber media with best probertites for absorbing oil products. Some fibers proved that they are an excellent choice for resolving the problem of oil/water pollution. Traditional models such as Lucas-Washburn and Darcy-based models were used to provide a theoretical framework for the experimental results. These two models were used to fit the experimental data and determined the theoretical average porous size in sorbent materials. The character of hydrophobic and oleophilic for the fiber materials was successfully confirmed by spontaneous imbibition. The spontaneous imbibition equipment was performed to determine the wetting behavior of the fiber materials with different hydrocarbon oils.
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Abdulelah Ali Hakami (2020). Evaluation of Natural and Synthetic Sorbents for Oil Spill Clean-up Applications. UWSpace. http://hdl.handle.net/10012/15782