한국지하수토양환경학회지:지하수토양환경 (Journal of Soil and Groundwater Environment)

  • 제22권4호
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  • Pages.27-32
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  • 2017
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  • 1598-6438(pISSN)
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  • 2287-8831(eISSN)
한국지하수토양환경학회 (Korean Society of Soil and Groundwater Environment)
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Cr(VI)으로 오염된 부지의 안정화 기술에 의한 정화 타당성 연구

Feasibility Study on Stabilization Technique of Cr(VI)-contaminated Site

  • 윤근석 (전북대학교 환경공학과 및 토양환경연구센터) ;
  • 유종찬 (전북대학교 환경공학과 및 토양환경연구센터) ;
  • 고성환 ((주)에코필) ;
  • 심명호 ((주)에코필) ;
  • 조명현 (전북대학교 환경공학과 및 토양환경연구센터) ;
  • 백기태 (전북대학교 환경공학과 및 토양환경연구센터)
  • Yoon, Geun Seok (Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University) ;
  • Yoo, Jong Chan (Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University) ;
  • Ko, Sung-Hwan (Ecophile Co. Ltd.) ;
  • Shim, Myung-Ho (Ecophile Co. Ltd.) ;
  • Cho, Myung-Hyun (Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University) ;
  • Baek, Kitae (Department of Environmental Engineering and Soil Environment Research Center, Chonbuk National University)
  • 투고 : 2017.04.26
  • 심사 : 2017.07.12
  • 발행 : 2017.08.31
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초록

In this study, a remedial investigation using reductive stabilization was conducted to treat Cr(VI)-contaminated soil. The influences of various operational parameters, including reaction time and the mass of ferrous iron, were also evaluated. The study site was contaminated with a large amount of Cr(III) and Cr(VI), and the selected treatment method was to stabilize Cr(VI) with ferrous iron, which reduced Cr(VI) to Cr(III) and stabilized the chromium, although a greater mass of ferrous iron than the stoichiometric amount was required to stabilize the Cr(VI). However, some Cr(III) re-oxidized to Cr(VI) during the drying process, and addition of a strong reducing agent was required to maintain reducing conditions. With this reducing agent, the treated soil met the required regulatory standard, and the mass of Cr(III) re-oxidized to Cr(VI) was significantly reduced, compared to the use of only Fe(II) as a reducing agent.

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