한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)

  • 제47권6호
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  • Pages.525-532
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  • 2014
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  • 0367-6315(pISSN)
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  • 2288-2162(eISSN)
한국토양비료학회 (Korean Society of Soil Science and Fertilizer)
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Evaluating Efficiency of Coal Combustion Products (CCPs) and Polyacrylamide (PAM) for Mine Hazard Prevention and Revegetation in Coal Mine Area

  • Oh, Se Jin (Department of Biological Environment, Kangwon National University) ;
  • Oh, Seung Min (Department of Biological Environment, Kangwon National University) ;
  • Ok, Yong Sik (Department of Biological Environment, Kangwon National University) ;
  • Kim, Sung Chul (Department of Bioenvironmental Chemistry, Chungnam National University) ;
  • Lee, Sang Hwan (Technology Research Center, Korea Mine Reclamation Corporation) ;
  • Yang, Jae E. (Department of Biological Environment, Kangwon National University)
  • 투고 : 2014.11.20
  • 심사 : 2014.12.16
  • 발행 : 2014.12.31
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초록

Since mine wastes were merely dumped in the mine waste dump, they have produced acid mine drainage (AMD). Therefore, main objective of this study was to evaluate the effect of coal combustion products (CCPs) on heavy metal stabilization and detoxification for mine wastes. Total six treatments for incubation test were conducted depending on mixing method (completely mixing and layered). Also, lysimeter experiment was conducted to examine efficiency of polyacrylamide (PAM) on reduction of mine wastes erosion. Result of incubation test showed that concentrations of soluble aluminium (Al) and iron (Fe) in leachate decreased compared to control. The lowest soluble Al and Fe in leachate was observed in 50% mixed treatment (14.2 and $1.03mg\;kg^{-1}$ for Al and Fe respectively) compared to control treatment (253.0 for Al and $52.6mg\;kg^{-1}$ for Fe). The pH of mine wastes (MW) and leachate increased compared to control after mixing with CCPs and ordered as control (MW 6.4, leachate 6.3) < 10% (MW 7.7, leachate 7.1) < 20% (MW 9.0, leachate 7.8) < 30% (MW 9.5, leachate 8.3) < 40% (MW 9.9, leachate 8.5) < 50% (MW 10.5, leachate 8.6). Application of PAM, both in liquid and granular type, dramatically decreased the suspended solid (SS) concentration of CCPs treatments. Reduction of SS loss was ordered as MW70CR30L ($24.4mg\;L^{-1}$) > MW70CR30LPL ($6.7mg\;L^{-1}$) > NT ($3.1mg\;L^{-1}$) > MW70CR30M ($1.6mg\;L^{-1}$) > MW70CR30MPL ($1.1mg\;L^{-1}$) > MW70CR30PGM ($0.7mg\;L^{-1}$) > MW70CR30LPG ($0.5mg\;L^{-1}$) > MW70CR30MPG ($0.4mg\;L^{-1}$). Overall, application of CCPs can be environmental friendly and cost-effective way to remediate coal mine wastes contaminated with heavy metals. In addition, use of PAM could help to prevent the erosion coal mine wastes in mine waste disposal area.

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