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2013 Vol.50, Issue 6 Preview Page

Research Paper

Study of the Stabilization of As and Heavy Metals Contaminated Farmland Soils nearby Abandoned Metal Mines, Korea

폐금속광산 주변 오염농경지의 As 및 중금속 안정성 효율 평가

Yo Seb Kwon1
,
Ji Cheol Kwon1
,
Seon Hee Jeong1
,
Myung Chae Jung1*
,
Ki Joon Kim2
,
Hyun Jin In2
,
Sang Gon An2
,
Geon Chun Lee2
,
Yoon Su Kim3
권 요셉1
,
권 지철1
,
정 선희1
,
정 명채1*
,
김 기준2
,
인 현진2
,
안 상곤2
,
이 근춘2
,
김 윤수3
1세종대학교 에너지자원공학과
2산하이앤씨
3한국광해관리공단
*Corresponding Author. 
31 December 2013. pp. 799-809
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Abstract

This study has focused on evaluation of stabilization ability of Arsenic and heavy metals in agricultural soils contaminated by mining activities. According to column test (adding 5% of granule limestone), concentrations of As, Cd, Cu, Pb and Zn in the soils were decreased to 35%, 80%, 75%, 100 and 85% respectively. By adding 3% of granule limestone and 2% of steel making slag, more elements in soils were stabilized, except As. In comparison with sequential extraction results for before and after stabilization treatment, over 90% of As and Cu (step 4 and 5), also more than 80% of Pb and Zn in the soils existed in the strong bound, and over 75% of Cd in the soils existed in relatively weak bound (step 1, 2 and 3). consequently crop plants which grown in contaminated soils can be affected by accumulation of As and heavy metals derived from covering materials.

Keywords
Stabilization
Granule limestone
Steel making slag
Arsenic
Heavy metals

이 연구는 금속광산 주변 농경지 토양으로부터 비소 및 중금속 안정성 효율 평가를 위해 실험을 실시하였다. 컬럼실험 결과, 5% 입상석회석을 첨가한 경우 비소는 35%, 카드뮴 80%, 구리 75%, 납 100% 및 아연 85%로 감소하였으며, 입상석회석 3%와 제강슬래그 2% 첨가시 비소를 제외한 모든 원소에서 좋은 처리효과를 나타내었다. 컬럼 전, 후 시료를 이용한 단계별(연속)추출 결과 비소와 구리는 90% 이상 안정된 형태(4～5단계)의 토양으로 존재하며, 카드뮴은 75%가 쉽게 용출되는 형태(1～3단계)의 토양으로 존재하는 것으로 나타났다. 또한 납과 아연에서도 80% 이상 안정된 형태로 존재하는 반면, 복토재의 컬럼실험 전, 후 단계별 추출 결과는 컬럼실험 후에 생물학적 이용도가 높은 단계인 1～3단계가 모두 상승하여 식물에 중금속이 흡수될 가능성이 있는 것으로 판단된다.

키워드
안정화
입상석회석
제강슬래그
비소
중금속
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Information
  • Publisher :The Korean Society of Mineral and Energy Resources Engineers
  • Publisher(Ko) :한국자원공학회
  • Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
  • Journal Title(Ko) :한국자원공학회지
  • Volume : 50
  • No :6
  • Pages :799-809
  • Received Date : 2013-10-25
  • Revised Date : 2013-11-22
  • Accepted Date : 2013-12-12
  • DOI :https://doi.org/10.12972/ksmer.2013.50.6.799
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