지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
The success of stabilization treatment in heavy metal contaminated sediment depends on the heavy metal bioavailability reduction through the sequestration of the heavy metals. This study was performed to assess the changes in the bioavailability of Pb or Cd in the Pb or Cd contaminated sediments by using birnessite and hydroxyapatite as stabilizing agents. The toxicity tests were carried out using a microorganism (Vibrio fischeri), an amphipod (Hyalella azteca) and an earthworm (Eisenia foetida). With Vibrio fischeri, the toxicities of both Pb and Cd were reduced by more than ten times in the presence of birnessite and hydroxyapatite compared to that of in the absence of birnessite and hydroxyapatite. The concentrations of Pb and Cd in the contaminated sediments were lethal to Hyalella azteca, however, in the presence of birnessite and hydroxyapatite more than 90%, on average, of Hyalella azteca survived. With Eisenia foetida, the bioaccumulated concentrations of both Pb and Cd were reduced by more than 75%, on average, lower with the addition of birnessite and hydroxyapatite to the contaminated sediments. These results show that the addition of birnessite and hydroxyapatite can reduce the bioavailability of Pb and Cd in contaminated sediments. In addition, the in situ and ex situ performance of birnessite and hydroxyapatite as stabilizing agents can be verified using the toxicity tests with Hyalella azteca and Eisenia foetida, respectively.
목차
등록된 정보가 없습니다.
참고문헌 (23)
참고문헌 신청
황경엽 / 2007 / 낙동강 퇴적물 내 중금속 존재 형태 및 용출 가능성 / 상하수도학회지 21(1):113~122
Bryan, G. / 1992 / Bioavailability, accumulation and effects of heavy metals in sediments with special reference to United Kingdom estuaries: a review / Environ. Pollut 76(2):89~131
Calmano, W. / 1988 / Study of metal sorption/desorption processes on competing sediment components with a multichamber device / Environ. Geol 11(1):77~84
Campisi, T. / 2005 / Effect of sediment turbidity and color on light output measurement for Microtox Basic Solid-Phase Test / Chemosphere 60(1):9~15
Catalan, Lionel J.J. / 2002 / Study of the physical and chemical mechanisms influencing the long-term environmental stability of natrojarosite waste treated by stabilization/solidification / J. Hazard. Mater 94(1):63~88
Bryan, G. / 1992 / Bioavailability, accumulation and effects of heavy metals in sediments with special reference to United Kingdom estuaries: a review / Environ. Pollut 76(2):89~131
Calmano, W. / 1988 / Study of metal sorption/desorption processes on competing sediment components with a multichamber device / Environ. Geol 11(1):77~84
Campisi, T. / 2005 / Effect of sediment turbidity and color on light output measurement for Microtox Basic Solid-Phase Test / Chemosphere 60(1):9~15
Catalan, Lionel J.J. / 2002 / Study of the physical and chemical mechanisms influencing the long-term environmental stability of natrojarosite waste treated by stabilization/solidification / J. Hazard. Mater 94(1):63~88
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