Evaluation of Soil Health by Soil Washing of As and Heavy Metal Contaminated Soils

Hyeong Min Park; Jeong Wook Kim; Soon Won Jeon; Seung Ho Park; Myung Chae Jung

doi:10.32390/ksmer.2023.60.1.001

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2023 Vol.60, Issue 1 Next Page

Research Paper

Evaluation of Soil Health by Soil Washing of As and Heavy Metal Contaminated Soils 토양세척공법을 적용한 비소 및 중금속 오염토양 정화 전 ‧ 후 토양건강성 평가

28 February 2023. pp. 1-11

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Abstract

This study focused on the evaluation of health of As and heavy metal contaminated soils following soil washing. Particle separation (2-0.075 mm) and acid washing by HCl (0.1, 0.5, and 1.0 M) were applied to remediate the contaminated soils. The eight soil health indices (bulk density, pH, electric conductivity, cation exchange capacity, soil organic material, available P₂O₅, soil respiration, β-glucosidase) were examined to quantify the variation of these properties after soil washing. Remediation efficiency increased with particle separation and increasing acid concentrations. Except for bulk density and electric conductivity, most soil health indices decreased after soil washing. These results provide important information on recycling of remediated soils and enhancing soil health.

Keywords

Arsenic

Heavy metal

Soil washing

Soil health

본 연구는 비소 및 중금속으로 오염된 농경지토양과 임야토양을 대상으로 토양세척공법을 적용하여 토양건강성을 평가하였다. 정화효율은 입도분리(2-0.075 mm)와 세척액의 농도의 변화(0.1M, 0.5M, 1.0M HCl)에 대해 확인하였으며, 토양건강성평가의 경우 8가지 지표 (용적밀도, pH, 전기전도도, 양이온치환용량, 유기물함량, 유효인산, 토양호흡, β-glucosidase)를 활용하여 정화 전·후를 비교하였다. 분석결과, 입도분리 및 세척액의 농도가 증가할수록 비소와 중금속의 정화효율이 증가되는 것으로 확인되었다. 토양건강성은 용적밀도와 전기전도도를 제외한 평가지표가 감소되는 것으로 평가되었다. 이러한 연구결과는 향후 정화토 재활용 가능성 평가와 토양건강성 증진을 위한 기초자료로 활용될 수 있을 것으로 판단된다.

키워드

비소

중금속

토양세척공법

토양건강성

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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 : 60
No :1
Pages :1-11
Received Date : 2022-12-19
Revised Date : 2023-01-02
Accepted Date : 2023-02-27
DOI :https://doi.org/10.32390/ksmer.2023.60.1.001

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

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