한국지하수토양환경학회지:지하수토양환경 (Journal of Soil and Groundwater Environment)

  • 제23권1호
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  • Pages.14-24
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  • 2018
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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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통계학적 모델을 이용한 중금속 토양 세척의 효율 분석에 관한 연구

Research with Statistical Model to Analyze Efficiency of Heavy Metal Soil Washing

  • 오상영 (한양대학교 건설환경공학과) ;
  • 유종찬 (한국지질자원연구원) ;
  • 백기태 (전북대학교 환경공학과) ;
  • 김한승 (건국대학교 환경공학과) ;
  • 박재우 (한양대학교 건설환경공학과)
  • Oh, Sangyoung (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Yoo, Jongchan (Korea Institute of Geoscience and Mineral Resources (KIGAM)) ;
  • Baek, Kitae (Department of Environmental Engineering, Chonbuk National University) ;
  • Kim, Hanseung (Department of Environmental Engineering, Konkuk University) ;
  • Park, Jaewoo (Department of Civil and Environmental Engineering, Hanyang University)
  • 투고 : 2017.11.08
  • 심사 : 2018.01.11
  • 발행 : 2018.03.31
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초록

In soil washing, there are many variables including types of reagent and contaminant, washing time, soil-liquid ratio, washing cycles, washing agent concentrations, and etc. To identify the most influencing factors on soil washing process, regression analysis was performed for eight single variables and five combined variables. A quantitative model that employs W/H (molar ratio of washing agent to heavy metal) as a major variable was established based on the regression. The validity of the model was demonstrated by conducting lab experiments with Cu, Pb, Zn, Ni and As-contaminated soils, and various washing reagents including acetic acid, citric acid, malic acid, oxalic acid, ethylenediamine tetraacetic acid (EDTA) and nitriloacetic acid (NTA). The washing efficiencies were compared with the EDTA washing data reported in the literature. The correlation between W/H and removal efficiency was analyzed after dividing data into two groups according to the heavy metal mobility.

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참고문헌

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