Physical Separation of Heavy Metals in Contaminated Soil Simulant near Abandoned Metal Mines

Do Hyun Jeong; Jongmun Cha

doi:10.32390/ksmer.2022.59.1.001

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2022 Vol.59, Issue 1 Next Page

Research Paper

Physical Separation of Heavy Metals in Contaminated Soil Simulant near Abandoned Metal Mines 폐금속광산지역 중금속 오염 토양 모사체의 물리적 선별

28 February 2022. pp. 1-9

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Abstract

The purpose of this study was to treat heavy metals from contaminated soil simulant around abandoned mines by using physical separation techniques. As a result of magnetic separation, the average removal efficiency was shown as lead 53%, zinc 67%, arsenic 66%, and cadmium 71% and volume of highly contaminated soil was reduced by approximately 16% in the condition of more than 5,000gauss. When the corona discharging electrostatic separation applied, the highest removal efficiency according to supplied voltages was observed as 38% for lead at –35kV, 45% and 48% for zinc and cadmium at –30kV, respectively and 38% for arsenic at –25kV conditions. However, considering the cost and the volume of contaminated soil to be treated later, it was considered that the –10kV condition was optimal.

Keywords

Soil

Heavy Metal

Physical Separation

Magnetic Separation

Electrostatic Separation

본 연구에서는 물리적 선별기술을 이용하여 폐금속광산 주변의 중금속으로 오염된 토양 모사체를 처리하고자 하였다. 자력선별을 적용한 경우 5,000gauss 이상의 조건에서 평균적으로 납 53%, 아연 67%, 비소 66%, 카드뮴 71%의 제거율을 보이며 부피를 약 16% 감소시켰다. 코로나 방전형 정전선별 적용 시 공급전압에 따른 제거율을 살펴본 결과, 납은 –35kV일 때 38%, 아연과 카드뮴의 경우 –30kV일 때 각각 45%와 48%, 비소는 –25kV 조건에서 38%로 가장 높았다. 하지만 비용적인 부분과 추후 처리해야 할 오염 토양의 부피를 고려할 때 –10kV 조건이 최적이라 사료된다.

키워드

토양

중금속

물리적선별

자력선별

정전선별

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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 : 59
No :1
Pages :1-9
Received Date : 2021-12-06
Revised Date : 2022-01-10
Accepted Date : 2022-02-22
DOI :https://doi.org/10.32390/ksmer.2022.59.1.001

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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