Hygroscopic ramie fabrics for recovering highly viscous low sulfur fuel oil

Young A. Lee, Young Cheol Park, Ochang Kwon, Seong Jin Kim, Seok Chung, Myoung Woon Moon

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number119668
JournalEnvironmental Pollution
Volume308
DOIs
Publication statusPublished - 2022 Sep 1

Keywords

  • Hygroscopic ramie
  • Oil repellency
  • Oil-proof ramie gloves
  • Ramie scooper
  • Superhydrophilicity

ASJC Scopus subject areas

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

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