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Fraction and Geoaccumulation Assessment Index of Heavy Metals in Abandoned Mines wastes  

Kim Hee-Joung (Department of Environmental Science, Kangwon National University)
Park Byung-Kil (Department of Chemical Engineering, Hanyang University)
Kong Sung-Ho (Department of Chemical Engineering, Hanyang University)
Lee Jai-Young (Department of Environmental Engineering, University of Seoul)
Ok Yong-Sik (Division of Biological Environment, Kangwon National University)
Jun Sang-Ho (Department of Environmental Science, Kangwon National University)
Publication Information
Journal of Soil and Groundwater Environment / v.10, no.6, 2005 , pp. 75-80 More about this Journal
Abstract
Several metalliferous including Guedo mine, Manjung mine and Joil mine located at the upper watershed of Namhan river, were abandoned or closed since 1988 due to the mining industry promotion policy and thus disposed an enormous amount of mining wastes without a proper treatment facilities, resulting in soil pollution. In this research, total and fractional concentrations of heavy metals in mining wastes were analyzed and accordingly the degree of soil pollutions in the abandoned mine area were quantitatively assessed employing the several pollution indices. The mining waste samples from Guedo mine, Manjung mine and Joil mine recently abandoned were collected for the evaluation of the potential of water pollution by mining activities. Index of geoaccumulation fractional composition and removal efficiency of some heavy metals by different concentration of HCl treatment were analyzed. Index of geoaccumulation of Cd, Pb, Zn, Cu, Ni and Cr are 6, $4\~6,\;0\~6,\;4\~5$, 2 and 0 respectively. The index of geoaccumulation of Cd, Pb, Zn and Cu reveals the mining wastes has high pollution potential in the area. According to sequential extraction of metals in the mine wastes organic fraction of Cu, reducible fraction of Pb, residual fraction of Ni and Zn were the most abundant fraction of heavy metals in mining wastes.
Keywords
Abandoned mines; Mining waste; Index of geoaccumulation; Fractional composition; Pollution potential;
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