• Evaluation of Stabilization of Arsenic in Contaminated Soil Taken from Farmland Near Abandoned Metal Mine

  • Su Ho Han1·Myung Chae Jung1,*·Jeong Wook Kim1·Kyung Wook Yoon1·Seon Ki Min1·So Yeon Park2·Ki Tae Sim2

  • 1Department of Energy Resources and Geosystem Engineering, Sejong University, Seoul 05006, Korea
    2Chemicals Research Division, National Institute of Environment Research

  • 폐금속광산 주변 오염 농경지에서 비소의 안정화 효율 평가

  • 한수호1·정명채1,*·김정욱1·윤경욱1·민선기1·박소연2·심기태2

  • 1세종대학교 지구자원시스템공학과
    2국립환경과학원 화학물질연구과

  • This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This study has evaluated the stabilization of As contaminated paddy and cultivated soils by pot experiments for rice and lettuce. Various ratios of limestone (L) and steel slag (S) were mixed with the soils in each pot. The soils were taken from before and after pot experiments, and analyzed for As extracted by sequentially (Wenzel method) and totally (aqua regia method).. Paddy soils amended with L (0.5%) and L (1.0%) + S (1.0%) showed increasing fraction 2 (specifically bound As) compared with control soil. Arsenic concentrations in rice grain grown on the amended soils decreased 14% and 12% compared with those on the control soil, respectively. According to sequential extraction of As in cultivated soils, the fractions 1~3 were decreased due to stabilization of As by the soil amendment, especially for S (1.0%), S (3.0%) and L (1.0%) + S (1.0%). In addition, relatively low As concentrations were found in lettuce grown on amended soils with L (0.5%) and L (1.0%) + S (1.0%). Therefore, it can be suggested that soil amendments with L (0.5%) or L (1.0%) + S (1.0%) were suitable for enhancing stabilization of As in the study area.


Keywords: As, Abandoned Mine, Stabilization, Bioavailability, Sequential Extraction

This Article

  • 2021; 26(1): 8-16

    Published on Feb 28, 2021

  • 10.7857/JSGE.2021.26.1.008
  • Received on May 15, 2020
  • Revised on May 22, 2020
  • Accepted on Dec 7, 2020

Correspondence to

  • Myung Chae Jung

  • Department of Energy Resources and Geosystem Engineering, Sejong University, Seoul 05006, Korea

  • E-mail: jmc65@sejong.ac.kr