• A Study on the Removal Efficiency of Heavy Metals in Daenam Mine Agricultural Soil Using Heavy metal Properties by Physical separation
  • ParK, Chan Oh;Hong, Dong-Ho;Lee, Jai-Young;Lee, Young Jae;Lee, Jin-Soo;
  • Institute of Technology Research, korea Resources Corporation;Institute of Technology Research, korea Resources Corporation;Department of Environmental Engineering, The University of Seoul;Department of Earth & Environmental Sciences, Korea University;Institute of Mine Reclamation Technology, Mine Reclamation Corporation;
  • 대남광산 농경지 토양 내 중금속 특성에 따른 물리적 선별 처리효율에 관한 연구
  • 박찬오;홍동호;이재영;이영재;이진수;
  • 한국광물자원공사 기술연구원;한국광물자원공사 기술연구원;서울시립대학교 환경공학과;고려대학교 지구환경과학과;한국광해관리공단 광해기술연구소;
Abstract
The main objective was to evaluate the efficiencies of different separation techniques, such as gravity separation, magnetic separation, and aerial separation. Zinc and cadmium removal efficiencies by gravity separation and magnetic separation were 28.3~29.3% and 19.1%, respectively, and were higher than the efficiency obtained by aerial separation. Results showed that the combination of gravity separation and magnetic separation in series which was to maximize the removal efficiencies gave removal efficiency of 21.5~38.7% for zinc and 22.1~23.4% for cadmium. The mass of soil meeting the regulation standards for zinc and cadmium after retrieval from the combined separation process accounted for approximately 80% of the treated soil that would be reusable without the pre-treatment procedure as the neutralization process using in the soil washing method. Physical separation techniques utilizing heavy metal properties are the alternative method to remediate heavy-metal contaminated soils in environmental and economic aspects.

Keywords: Aerial separation;Gravity separation;Magnetic separation;Size separation;

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This Article

  • 2013; 18(5): 46-55

    Published on Oct 31, 2013

  • 10.7857/JSGE.2013.18.5.046
  • Received on Sep 24, 2013
  • Revised on Oct 28, 2013
  • Accepted on Oct 28, 2013