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- W3025128985 abstract "In this study, the properties of immobilization of metal(loid)s in artificially contaminated dredged sediment using various binders (gypsum, DAP, and ladle slag) are reported. The effects of binders on the immobilization were evaluated by chemical leaching tests such as US EPA Toxicity Characterization Leaching Procedure (TCLP), Korean Standard Leaching Test (KSLT), Potentially Bioavailable Sequential Extraction (PBASE) and The Standard, Measurements and Testing Programme of European Union (SM&T). The results of TCLP and KSLT extraction showed that Pb and Zn concentrations in dredged sediment were highly reduced after immobilization with ladle slag and DAP. The gypsum was ineffective. However, As concentration in the dredged sediment immobilized with DAP increased because of the competition between arsenate and the phosphate originated from DAP. The increased immobilization efficiency is attributed to the increase in the step 3 & 4 fractions of PBASE and SM&T extraction. Among the binders, the ladle slag was the best efficiency in the metal(oid)s immobilization. As the water content and wet&dry cycling period increased, the TCLP-extracable concentration decreased. The Hazardous Index of CSOIL model for the aqua regia digestion, PBASE and SM&T in the immobilized dredged sediment with ladle slag were lower than metal(loid)s concentration of dredged sediment, respectively, under the non-residential and residential scenarios." @default.
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- W3025128985 date "2019-01-01" @default.
- W3025128985 modified "2023-09-23" @default.
- W3025128985 title "중금속 오염 준설토의 고정화 처리 효율 평가 : 고정화제 종류, 자연환경조건 영향" @default.
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