Abstract
This paper studies the correlation between oil recovery usability and mechanical behavior under compression loads of an innovative oil recovery material. The examined composites are silicone foams filled with carbon nanotubes (CNT). Here, the reutilization of oil recovery processes of the newly developed composite foams is evaluated. In this regard, static and cyclic compressive tests are carried out. Samples filled with pristine and functionalized CNT are tested to evaluate the influence of the filler’s characteristics on the composite foam’s mechanical behavior. The results show that the presence of CNT (CNT-0) increases the elastic modulus (0.030 MPa) and collapse stress (0.010 MPa) of the siloxane matrix. On the contrary, as the CNT functionalization degree increases, a worsening of the composite’s mechanical performance is observed. CNT-0 foam evidences, also, the optimal mechanical stability to cyclic compressive loads, maintaining high stress values until 30 cycles. Furthermore, a correlation between the absorption capacity, elastic modulus, and cyclability is reported, highlighting a simplified approach to tailor the high absorption durability performance of filled CNT silicone foams. The promising results confirm the possible reuse of these new composite foams as absorbent materials for oil spill recovery applications.
Highlights
The Mediterranean Sea is a semi-closed basin; its water represents around 0.7% of the world’s marine waters and it is an invaluable source of biodiversity
The SF-0 and carbon nanotubes (CNT)-0 samples exhibit a similar behavior in heavy oil, reaching an absorption capacity in pump oil and crude oil of about 119 wt.% and 140 wt.%, respectively
In light oils an increase in the absorption capacity is recorded for the CNT-0 sample compared to SF-0
Summary
The Mediterranean Sea is a semi-closed basin; its water represents around 0.7% of the world’s marine waters and it is an invaluable source of biodiversity. It contains 12,000 marine species, about 10%. Of the total animals that populate the planet’s seas. It acts as a human resource for maritime transport, the tourist industry, etc. Approximately 200,000 large vessels operate annually in the Mediterranean Sea, including ferries, cargo, and commercial vessels, of which around 300 daily tankers carry petroleum products. The Mediterranean Sea suffers oil spills of about
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