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.
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초록· 키워드
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Contaminated sediment can be treated in order to reuse the treated sediment. Even though the chemical criteria are satisfied, the treated sediment could still impose toxic effects. Therefore, this study investigated the changes in the ecological toxic effects of the contaminated sediment from the J region in Singapore after treatment. The contaminated sediment was subject to sequential soil washing and thermal treatment, followed by pH neutralization. Toxic effects of the contaminated and treated sediments were determined by using Vibrio fischeri ($Microtox^{(R)}$), Triticum aestivum (wheat), and Eisenia foetida (earthworm). After treatment, the concentrations of total petroleum hydrocarbons and heavy metals were decreased by 98% and 59-93%, respectively, and satisfied the Industrial Maximum Values of the Dutch Standard, which were used as the remedial goal. The bioluminescence reduction of V. fischeri decreased significantly, and the earthworm survival increased from 0% to 90% after treatment. The germination rate increased from $0{\pm}0%$ to $75{\pm}13%$ after treatment, but the treated sediment may need additional treatment such as nutrient addition for better plant growth. Overall, this study showed that the treatment of the contaminated sediment satisfactorily removed mixed contaminants, and this led to reduction in toxic effects, suggesting improved potentials for reuse of the treated sediment.
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등록된 정보가 없습니다.
참고문헌 (20)
참고문헌 신청
Cuong, D.T. / 2006 / Metal speciation in coastal marine sediments from Singapore using a modified BCRsequential extraction procedure / Appl. Geochem 21(8):1335~1346
Elgh-Dalgren, K. / 2009 / Laboratory and pilot scale soil washing of PAH and arsenic from a wood preservation site: changes in concentration and toxicity / J. Hazard. Mater. 172(2-3):1033~1040
Gee, G.W. / 1986 / Methods of Soil Analysis: Part 1-Physical and Mineralogical Methods
Goh, B.P.L. / 1997 / Heavy metal levels in marine sediments of Singapore / Environ. Monit. Assess 44(1):67~80
Im, J. / 2015 / Effect of different soil washing solutions on bioavailability of residual arsenic in soils and soil properties / Chemosphere 138:253~258
Elgh-Dalgren, K. / 2009 / Laboratory and pilot scale soil washing of PAH and arsenic from a wood preservation site: changes in concentration and toxicity / J. Hazard. Mater. 172(2-3):1033~1040
Gee, G.W. / 1986 / Methods of Soil Analysis: Part 1-Physical and Mineralogical Methods
Goh, B.P.L. / 1997 / Heavy metal levels in marine sediments of Singapore / Environ. Monit. Assess 44(1):67~80
Im, J. / 2015 / Effect of different soil washing solutions on bioavailability of residual arsenic in soils and soil properties / Chemosphere 138:253~258
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