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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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The uranium removal capacity of radish sprouts (Raphanus sativus L.) in groundwater was calculated on the basis of the amount of uranium accumulated in the radish sprouts rather than the concentration in solution, of which process was very limited in previous studies. Continuous rhizofiltration clean-up system was designed to investigate the feasibility of radish sprouts, applying for uranium contaminated groundwater (U concentration: 110 μg/L) taken at Bugogdong, Busan. Six acrylic boxes (10 cm × 30 cm × 10 cm) were connected in a direct series for the continuous rhizofiltration system and 200 g of radish sprouts cultivars was placed in each box. The groundwater was flushed through the system for 48 hours at the constant rate of 5 mL/min. The rhizofiltration system was operated in the phytotron, of which conditions were at 25℃ temperature, 70% of relative humidity, 4,000 Lux illumination (16 hours/day) and 600 mg/L of CO<sub>2</sub> concentration. While 14.4 L of contaminated groundwater was treated, the uranium removal efficiency of the radish sprouts (1,200 g in wet weight) was 77.2% and their removal capacities ranged at 152.1 μg/g-239.7 μg/g (the average: 210.8 μg/g), suggesting that the radish sprouts belong to the group of hyper-accumulation species. After the experiment, the sum of U amounts accumulated in radish sprouts and remained in groundwater was 1,472.2 μg and the uranium recovery ratio of this rhizofiltration experiment was 92.9%. From the results, it was investigated that the radish sprouts can remove large amounts of uranium from contaminated groundwater in a short time (few days) because the fast growth rate and the high U accumulation adsorption capacity.
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참고문헌 (34)
참고문헌 신청
Antonkiewicz, J. / 2002 / The use of plants accumulating heavy metals for detoxification of chemically polluted soils / J. Polish Agric. Univ 5:121~143
Baker, A.J.M. / 1998 / phytoremedation / Ann Arbor Press
Beveridge, T.J. / 1980 / Sites of metal deposition in the cell wall of bacillus subtilis / Int. J. Mycobacteriol 141:876~887
Chen, H. / 2001 / EDTA and HEDTA effects on Cd, Cr, and Ni uptake by helianthus annuus / Chemosphere 45:21~28
Cornish, J.E. / 1995 / Evaluation of in situ phytoremediation of uranium-contaminated soils in Ohio and Montana / Hazardous Management '95 Conference proceeding
Baker, A.J.M. / 1998 / phytoremedation / Ann Arbor Press
Beveridge, T.J. / 1980 / Sites of metal deposition in the cell wall of bacillus subtilis / Int. J. Mycobacteriol 141:876~887
Chen, H. / 2001 / EDTA and HEDTA effects on Cd, Cr, and Ni uptake by helianthus annuus / Chemosphere 45:21~28
Cornish, J.E. / 1995 / Evaluation of in situ phytoremediation of uranium-contaminated soils in Ohio and Montana / Hazardous Management '95 Conference proceeding
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