We propose a genetic algorithm for optimizing oil skimmer assignments, introducing a tailored repair operation for constrained assignments. Methods essentially involve simulation-based evaluation to ensure adherence to South Korea's regulations. Results show that the optimized assignments, compared to current ones, reduced work time on average and led to a significant reduction in total skimmer capacity. Additionally, we present a deep neural network-based surrogate model, greatly enhancing efficiency compared to simulation-based optimization. Addressing inefficiencies in mobilizing locations that store oil skimmers, further optimization aimed to minimize mobilized locations and was validated through scenario-based simulations resembling actual situations. Based on major oil spills in South Korea, this strategy significantly reduced work time and required locations. These findings demonstrate the effectiveness of the proposed genetic algorithm and mobilized location minimization strategy in enhancing oil spill response operations.
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http://dx.doi.org/10.3390/biomimetics9060330 | DOI Listing |
Mar Pollut Bull
December 2024
Extreme Materials Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; Korea Institute of Science and Technology - Sungkyunkwan University Carbon-Neutral Research Center, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea; School of Chemical Engineering, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea. Electronic address:
Oil spill accidents have series environmental and economic impacts, increasing the demand for efficient technologies to recover oil from contaminated waters. In this study, a hierarchically structured ratchet surface with superhydrophilicity was presented as a novel oil skimming mechanism for the recovery of high-viscosity oil, particularly low-sulfur fuel oil (LSFO), which has recently been used as marine fuel in open water environments. The interaction between the superhydrophilic ratchet and oil provides favorable conditions for oil retention at the water surface.
View Article and Find Full Text PDFBiomimetics (Basel)
May 2024
Department of Computer Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Republic of Korea.
Heliyon
June 2024
State Key Laboratory of Chemical Safety, SINOPEC Research Institute of Safety Engineering Co., Ltd., Qingdao, 266071, China.
Frequent oil spill accidents caused by transportation, storage and usage may lead to severe damage on aquatic and ecological environments. Effective methods for rapid oil recovery are urgently in demand. Polyvinyl chloride, hydrophobic nano-SiO, expanded graphite were separately applied to polyurethane and melamine sponge to fabricate superhydrophobic sponge material.
View Article and Find Full Text PDFPeerJ
May 2024
Department of Behavioural Ecology, Bielefeld University, Bielefeld, Germany.
Preen oil, the secretion from the uropygial gland of birds, may have a specific function in incubation. Consistent with this, during incubation, the chemical composition of preen oil is more likely to differ between sexes in species where only one sex incubates than in species where both sexes incubate. In this study, we tested the generality of this apparent difference, by investigating sex differences in the preen oil composition of a shorebird species, the Kentish plover (, formerly , ).
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
April 2024
Department of Geology, University of Patras, 26504, Patras, Greece.
Catastrophic oil spill is one of the major issues to the environment. Various methods have been used to treat oil spillage including in situ burning, the use of skimmers, dispersants, bioremediation, dispersing agents, oil sorbents, and biological agents. Application of oil sorbent is one of the effective solutions in oil spill clean-up.
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