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Hygroscopic ramie fabrics for recovering highly viscous low sulfur fuel oil

Authors
Lee, Young A.Park, Young CheolKwon, OchangKim, Seong JinChung, SeokMoon, Myoung-Woon
Issue Date
1-9월-2022
Publisher
ELSEVIER SCI LTD
Keywords
Hygroscopic ramie; Superhydrophilicity; Oil repellency; Ramie scooper; Oil-proof ramie gloves
Citation
ENVIRONMENTAL POLLUTION, v.308
Indexed
SCIE
SCOPUS
Journal Title
ENVIRONMENTAL POLLUTION
Volume
308
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/142720
DOI
10.1016/j.envpol.2022.119668
ISSN
0269-7491
Abstract
Low sulfur fuel oils (LSFOs) with less than 0.5% sulfur content have been mandated for marine vessels by the International Maritime Organization since 2020. However, owing to the low dispersibility and high viscosity of LSFOs, their oceanic spills are difficult to clean using conventional response systems. In this study, we propose a superhydrophilic and hygroscopic ramie to clean spilled LSFO. To this end, a raw ramie fiber, which is intrinsically hydrophobic, was treated using a mild alkali to remove its waxy, rough, and gummy veneer and reveal a smooth surface. This substantially improved its hygroscopic nature, superhydrophilicity, and water-retention, while preserving its mechanical durability in dry and wet environments. The hygroscopic ramie exhibited underwater superoleophobicity and self-cleaning abilities against highly adhesive LSFOs. Two proofs-of-concept are demonstrated in this study-an oil-proof glove for maximizing oil repellency and a direct oil-scooping device for simple and continuous recovery of spilled oil with high efficiency.
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공과대학 (기계공학부)
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