• Soil Loss Reduction and Stabilization of Arsenic Contaminated Soil in Sloped Farmland using CMDS (Coal Mine Drainage Sludge) under Rainfall Simulation

  • Il-Ha Koh1·Yo Seb Kwon1·Mun-Ho Jeong2,3·Won Hyun Ji4*

  • 1National Environment Lab. (NeLab), Seoul 02841, Korea
    2Technology Research & Development Institute, Korea Mine Rehabilitation and Mineral Resources Corp., Wonju 26464, Korea
    3Department of Energy & Climate Environment Fusion Technology, Hoseo University, Asan 31499, Korea
    4Department of General Education for Human Creativity, Hoseo University, Asan 31499, Korea

  • 광산지역 비소오염 경사 농경지 토양의 안정화 및 유실 저감을 위한 석탄광산배수슬러지의 적용성 평가

  • 고일하1·권요셉1·정문호2,3·지원현4*

  • 1환경기술정책연구원 (NeLab)
    2한국광해광업공단 기술연구원
    3호서대학교 에너지기후환경융합기술학과
    4호서대학교 창의교양학부

  • 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

Soil aggregation begins with flocculation of clay particles triggered by interfacial reactions of polyvalent cation such as Ca2+ and Fe3+, and they are also known as important elements to control the mobility of arsenic in soil environment. The objective of this study was to investigate the feasibility of CMDS (coal mine drainage sludge) for soil loss reduction and stabilization of arsenic-contaminated soil in a 37% sloped farmland under rainfall simulation. The amount of soil loss decreased by 43% when CMDS was applied, and this result was not significantly different from the case of limestone application, which yielded 46% decrease of soil loss. However, the relative amount of dispersed clay particles in the sediment CMDS-applied soil was 10% lower than that of limestone-applied soil, suggesting CMDS is more effective than limestone in inducing soil aggregation. The concentrations of bioavailable arsenic in CMDS amended soil decreased by 46%~78%, which was lower than the amount in limestone amended soil. Therefore, CMDS can be used as an effective amendment material to reduce soil loss and stabilize arsenic in sloped farmland areas.


Keywords: Soil loss, Sloped farmland, CMDS (coal mine drainage sludge), Arsenic, Stabilization

This Article

  • 2021; 26(6): 18-26

    Published on Dec 31, 2021

  • 10.7857/JSGE.2021.26.6.018
  • Received on Sep 6, 2021
  • Revised on Sep 10, 2021
  • Accepted on Oct 13, 2021

Correspondence to

  • Won Hyun Ji

  • Department of General Education for Human Creativity, Hoseo University, Asan 31499, Korea

  • E-mail: greenidea@hoseo.edu