Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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Exothermic Oil Absorbent Sheet for Low-sulfur Fuel Oil (LSFO) Spilled into Seawater in the Winter Season

동절기 해상으로 유출된 저유황 중질유 제거를 위한 발열 흡착포

  • Park, Han-gyu (Marine Pollution Response Division, Korea Coast Guard Station Pohang) ;
  • Oh, Gyung-geun (Major of Environmental Engineering, Korea Maritime and Ocean University) ;
  • Bae, Byung-Uk (Department of Civil and Environmental Engineering, Daejeon University) ;
  • Song, Young-Chae (Department of Environmental Engineering, Korea Maritime and Ocean University)
  • 박한규 (포항해양경찰서 해양오염방제과) ;
  • 오경근 (한국해양대학교 대학원) ;
  • 배병욱 (대전대학교 토목환경공학과) ;
  • 송영채 (한국해양대학교 물류.환경.도시인프라공학부 환경공학전공)
  • Received : 2022.06.09
  • Accepted : 2022.07.13
  • Published : 2022.08.31
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Abstract

An exothermic oil absorbent sheet with calcium chloride crystals can be fabricated, by dipping a clean polypropylene fabric in calcium carbonate and hydrochloric acid solution and drying it. The exothermic oil absorbent sheet applied to the seawater surface, releases heat by the dissociation of calcium chloride. The dissociation heat liquefies the solidified low-sulfur fuel oil at a low temperature, and converts it to a state at which it can be absorbed. The optimum mole concentrations of calcium carbonate and hydrochloric acid required for the exothermic oil absorbent sheet, are 0.25 M and 0.5 M, respectively. The oil absorption capacity of the exothermic oil absorbent sheet for low sulfur fuel oil depends on the seawater temperature. But, it is highly excellent at 4.5-7.08 g/g at 10℃, the average seawater temperature during the winter in Korea. The exothermic oil absorbent sheet is an excellent alternative in absorbing low-sulfur fuel oil in winter and removing it from seawater.

탄산칼슘과 염산 수용액에 폴리프로필렌 섬유를 침지시켜 표면에 염화칼슘 결정을 생성시킴으로써 발열 흡착포를 제작하였다. 발열 흡착포를 유출 기름으로 인해 유막이 형성된 해수면에 적용하면 염화칼슘 결정이 주변의 수분을 흡수하여 이온화되면서 용해열을 방출한다. 염화칼슘의 용해열을 유동점 이하의 저온에서 응고된 저유황 중질유를 액화시켜 흡유 가능한 상태로 전환시킨다. 발열 흡착포의 제작을 위해 폴리프로필렌 표면에 염화칼슘 결정을 생성시키기 위한 탄산칼슘과 염산의 최적 몰농도는 각각 0.25 M과 0.5 M이다. 저유황 중질유 발열 흡착포의 흡유능은 해수 온도에 따라 다르지만, 우리나라 인근 해역의 동절기 평균 수온인 10℃에서 4.5-7.08 g/g으로 매우 우수하였다. 염화칼슘 발열 흡착포를 사용하면 동절기 선박사고로 인하여 해양에 유출된 저유황 중질유를 효과적으로 흡유하여 제거할 수 있다.

Keywords

Acknowledgement

본 연구는 한국해양대학교 산학연협력 선도대학 육성(LINC 3.0) 사업단에 의해 일부 지원받아 수행되었으며, 초기 연구와 기초 실험 수행에 기여한 김유진, 김창엽, 조경일에게 감사드립니다.

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