해양환경안전학회지 (Journal of the Korean Society of Marine Environment & Safety)

  • 제25권1호
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  • Pages.74-80
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  • 2019
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
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저온 소성 굴 패각의 피복에 의한 연안 오염 퇴적물의 성상 변화에 관한 연구

Changes in Sediment Properties Caused by a Covering of Oyster Shells Pyrolyzed at a Low Temperature

  • Kim, Hyung-Chul (Marine Environment Research Division, National Institute of Fisheries Science) ;
  • Woo, Hee-Eun (Department of Ocean Engineering Pukyong National University) ;
  • Jeong, Ilwon (Department of Ocean Engineering Pukyong National University) ;
  • Oh, Seok-Jin (Department of Oceanography, Pukyong National University) ;
  • Lee, Seong-Ho (Eco Technology) ;
  • Kim, Kyunghoi (Department of Ocean Engineering Pukyong National University)
  • 투고 : 2018.12.31
  • 심사 : 2019.02.25
  • 발행 : 2019.02.28
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초록

본 연구에서는 저온 소성 굴 패각의 재활용을 위한 기초적 연구로서 메조코즘 실험을 통해 저온 소성 굴 패각의 피복에 따른 연안 오염 퇴적물의 성상 변화를 조사하였다. 이를 위해 $350^{\circ}C$에서 소성시킨 굴 패각을 연안 오염 퇴적물에 피복하여 직상수와 간극수의 성상변화를 분석하는 메조코즘 실험을 수행하였다. 실험 결과, 굴 패각의 피복에 의해 수층과 퇴적층이 분리되었기 때문에 직상수의 산화환원전위(ORP) 증가 및 DIN 중의 $NH_3-N$의 비율의 감소가 실험구에서 관측되었다. 실험구의 DIP의 농도는 대조구와 비교하여 유의한 차이를 확인하기 어려웠다. 굴 패각의 피복에 의한 퇴적물의 총유기탄소(TOC)는 감소하였으며, 산휘발성황화물(AVS)은 저온 소성 굴 패각의 황화물 흡착 능력으로 인해 최대 50 %까지 감소한 것으로 확인되었다. 본 연구의 결과로부터 저온 소성 굴 패각은 연안 오염 퇴적물의 정화를 위해 이용될 수 있는 재료인 것으로 결론 지을 수 있다.

In this study, pyrolyzed oyster shells at a low temperature ($350^{\circ}C$) were applied for a mesocosm experiment to confirm resulting changes in the properties of sediment. After creating a covering of oyster shells, an increase in ORP and decrease in ammonia in the overlying water was observed in an experimental case. The decrease of TOC in this experiment was due to the dilution of organic matter due to the addition of inorganic matter (pyrolyzed oyster shells). The decrease in the concentration of AVS was observed due to the adsorption of AVS by the surface of the oyster shells. From the results obtained in this experiment, it has been concluded that pyrolyzed oyster shells at a low temperature can be used for remediation of polluted sediment.

키워드

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피인용 문헌

  1. 소성온도에 따른 굴 패각의 영양염 제거 성능 평가 vol.25, pp.7, 2019, https://doi.org/10.7837/kosomes.2019.25.7.906
  2. 굴 패각의 입경 및 소성 온도에 따른 연안 오염 저서환경 변화 연구 vol.26, pp.7, 2019, https://doi.org/10.7837/kosomes.2020.26.7.873