해수-석탄회 상호작용에 의한 원소 용출특성: 실험연구

  • 박성민 (군산대학교 토목환경공학부) ;
  • 김강주 (군산대학교 토목환경공학부) ;
  • 장수범 (서울대학교 지구환경과학부) ;
  • 황갑수 (군산대학교 토목환경공학부)
  • Published : 2003.04.01

Abstract

We investigated the leaching of elements from anthracite ashes by interactions with seawater. The results show that consumption rates of dissolved oxygen are 7.5 times greater in the seawater system than in the fresh water system and indicate that the differences in DO consumption rate may plat a role in regulating the element leaching from the coal ashes. It is revealed that seawater's pH buffering capacity is the most important factor that makes the leaching of elements and their chemical behaviors in the seawater system different from those in the fresh water environments. In overall, element leaching from the weathered ash is smaller than that from the fresh ash. However, the leaching of Si, Fe, Al, Mn, phosphate, and some other elements were independent of weathering. They were dependant only on the pH of the solutions.

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