Korean Journal of Soil Science and Fertilizer (한국토양비료학회지)

Korean Society of Soil Science and Fertilizer (한국토양비료학회)
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Mobility of Metals in Tailings using a Column Experiment from the Guryong Copper Mine

주상모사실험을 이용한 구룡광산 광미 내 원소의 이동성

  • Moon, Yong-Hee (National Institute of Agricultural Science and Technology) ;
  • Song, Yun-Goo (Department of Earth System Sciences, Yonsei University) ;
  • Moon, Hi-Soo (Department of Earth System Sciences, Yonsei University) ;
  • Zhang, Yong-Seon (National Institute of Agricultural Science and Technology)
  • 문용희 (농촌진흥청 국립농업과학원) ;
  • 송윤구 (연세대학교 지구시스템과학과) ;
  • 문희수 (연세대학교 지구시스템과학과) ;
  • 장용선 (농촌진흥청 국립농업과학원)
  • Received : 2010.04.01
  • Accepted : 2010.05.24
  • Published : 2010.06.30
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Abstract

The laboratory column experiments were used to transport of metal elements by infiltration-related dispersion and/or diffusion in mine tailing of the Guryong gold mine. The mine tailing shows the neutral pH (for a pore water) and contains quartz, chlorite, pyrite and calcite. Both a non-reactive solute ($Cl^-$ of 100 mg $L^{-1}$) and a reactive solute (1N HCl), were injected continuously through columns. The breakthrough curve in the non-reactive experiment reached at a maximum under 1.5 pore volumes (PV). The longitudinal dispersion (0.607 cm) and hydrodynamic dispersion coefficient ($1.96{\times}10^{-7}cm^{2}sec^{-1}$) were calculated by the slope. In the reactive experiment, the plateau curve was appeared in the pH values of 5.3, 4.5 and 1.7. The releases of metal elements such as Fe, Mn, Al, Cu, Zn, Pb, and Cd were observed to be related to the pH buffering. High concentrations of Mn, Cd and Zn were observed at the first pH plateau (4 PV and pH 5.3), whereas Fe, Cu, Al and Pb were released as the pH decreased to 4.0 or less. The resulting order of metals mobility, based on the effluent water, is Mn=Cd>Zn>Cu>Fe>Al>Pb.

Keywords

References

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