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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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In accordance with the view on remediated soil as a resource, this study assessed the applicability of soil washing with the neutral phosphate for remediation of arsenic (As)-contaminated soil. Three soil samples of different land uses (i.e., rice paddy, upland field and forest land) were collected from the study site, and the aqua regia-extractable As concentrations were 59.2, 30.8 and 53.1 mg/kg, respectively. Among the neutral phosphate reagents, ammonium phosphate showed the highest As washing efficiency. The optimized washing condition was 2-hr washing with 0.5M ammonium phosphate solution (pH 6) and soil to liquid ratio of 1 : 5. The extraction efficiencies of As did not guarantee the residual soil As concentrations to satisfy the Korea soil regulatory level (i.e., Worrisome level) in the three soil samples. To enhance washing efficiency, the As-contaminated soil was submerged in washing solution (1 : 1, w/v) for 24 hr and 1-hr washing with 0.5M ammonium phosphate solution was tested. As extraction efficiencies of 36.1 (rice paddy), 21.4 (upland field) and 26.4% (forest land) were attained, which satisfied the Worrisome level for Region 1 (25 mg/kg of As) in rice paddy, but not in upland field and forest land.
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참고문헌 (26)
참고문헌 신청
Alam, M. G. M / 2001 / Extraction of arsenic in a synthetic arsenic-contaminated soil using phosphate / Chemosphere 43(8):1035~1041
Alam, M. G. M / 2007 / Removal of arsenic from contaminated soils using different salt extractants / J. Environ. Sci. Health, Part A: Toxic/Hazard. Subst. Environ. Eng 42(4):447~451
백기태 / 2007 / 염산을 사용한 납 오염 토양의 토양 세척에 의한 정화 / 지하수토양환경 12(3):17~22
Bohn, H. L / 2001 / Soil Chemistry / John Wiley & Sons :213
Dermont, G / 2008 / Soil washing for metal removal: a review of physical/chemical technologies and field applications / J. Hazard. Mater 152(1):1~31
Alam, M. G. M / 2007 / Removal of arsenic from contaminated soils using different salt extractants / J. Environ. Sci. Health, Part A: Toxic/Hazard. Subst. Environ. Eng 42(4):447~451
백기태 / 2007 / 염산을 사용한 납 오염 토양의 토양 세척에 의한 정화 / 지하수토양환경 12(3):17~22
Bohn, H. L / 2001 / Soil Chemistry / John Wiley & Sons :213
Dermont, G / 2008 / Soil washing for metal removal: a review of physical/chemical technologies and field applications / J. Hazard. Mater 152(1):1~31
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