• Trends in Evaluation Techniques for Leaching of Heavy Metals and Nutrients according to Sediment Resuspension in Rivers and Lakes

  • Sang-Gyu Yoon1·Seoyeon Han2·Haewook Kim2·Ihn-Sil Kwak3·Jinsung An1,2*

  • 1Department of Smart City Engineering, Hanyang University, Ansan 15588, South Korea
    2Department of Civil and Environmental Engineering, Hanyang University, Ansan 15588, South Korea
    3Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, South Korea

  • 하천 및 호소 내 퇴적물 재부유에 따른 중금속 및 영양염류 용출량 평가기법 동향

  • 윤상규1·한서연2·김해욱2·곽인실3·안진성1,2*

  • 1한양대학교 ERICA 스마트시티공학과
    2한양대학교 ERICA 건설환경공학과
    3전남대학교 해양융합과학과

  • 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

The phenomenon of sediment resuspension in rivers and lakes causes contaminants (heavy metals and nutrients) accumulated in the sediment to leach into the overlying water. As a result, it can lead to changes in toxic effects and eutrophication in the aquatic ecosystem. In this regard, it is important to quantitatively determine the amount of contaminants leached during sediment resuspension. In this study, methods for assessing the amount of released contaminants and the types of contaminants potentially released due to sediment resuspension were studied and summarized. Methods for assessing leaching can be divided into three groups based on the principle of causing resuspension: (i) the oscillating grid chamber method, (ii) the mechanical stirrer method, and (iii) the shaker method. It was confirmed that the types of contaminants that can potentially be released include heavy metals bound to sulfides, as well as exchangeable and labile forms of heavy metals and nutrients. To effectively manage stable aquatic ecosystems in the future, a simplified leaching test method is needed to assess in advance the risks (i.e., changes in toxic effects and eutrophication) that sediment resuspension may pose to aquatic ecosystems.


Keywords: Sediment resuspension, Sediment-Water interface, Ecological risk assessment, Ecotoxicity, Leaching test

This Article

  • 2023; 28(5): 1-11

    Published on Oct 31, 2023

  • 10.7857/JSGE.2023.28.5.001
  • Received on Sep 27, 2023
  • Revised on Oct 12, 2023
  • Accepted on Oct 20, 2023

Correspondence to

  • Jinsung An

  • 1Department of Smart City Engineering, Hanyang University, Ansan 15588, South Korea
    2Department of Civil and Environmental Engineering, Hanyang University, Ansan 15588, South Korea

  • E-mail: jsan86@hanyang.ac.kr