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Ecological Risk Assessment(ERA) of Abandoned Mine Drainage(AMD) in Korea Based on Vibrio fisheri, Selenastrum capricornutum, and Daphnia magna  

Kim, Ki-Tae (Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology)
Lee, Byoung-Cheun (Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology)
Kim, Dong-Wook (Department of Environmental Engineering, Gongju National University)
Kim, Sang-Don (Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.29, no.2, 2007 , pp. 163-168 More about this Journal
Abstract
Ecological risk assessment(ERA) to 5 abandoned mine drainage was investigated by using chemical measurement and bioassay experiment. From the results of chemical analysis, the high concentration of heavy metals are detected in most area. The Arsenite were mostly detected in Songcheon, Nakdong, and Dukum abandoned mine area, and various heavy metals were highly dispersed in Nakdong area. The study area have also high biological toxicity, resulted from the bioassay based on WET(Whole Effluent Toxicity) test by using Vibrio fisheri, Selenastrum copricornutum, and Daphnia magna. The maximum toxicity was shown in the point where the mine waters start to flow. The sensitivity of toxicity by S. capricornutum was relatively high considering the values of toxicity in all samples, from 1.3 to 32.0 TU. The different sensitivities of toxicity recommends the use of battery system, resulted from at least two test species for bioassay or ecological risk assessment of mine drainage. Besides, the results showed high hazard quotient(i.e., greater than 1 HQ value indicating potentially significant toxic risks) with regard to abandoned mine drainage area in this study. On the other hand, the biological toxicity results were sharply decreased by attenuation along further distance from discharging of mine waters. Therefore, environmental parameters including the dilution factor, dissolved organic matter, and hardness should be considered when the remediation and ERA of abandoned mine drainage is planned.
Keywords
ERA; AMD; Heavy Metals; Daphnia magna; Selenastrum capricornutum;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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