Immobilization or mobilization of heavy metal(loid)s in lake sediment-water interface: Roles of coupled transformation between iron (oxyhydr)oxides and natural organic matter

Yuanhang Li; Shaokang Zhang; Hang Fu; Yuheng Sun; Shoujuan Tang; Jinwen Xu; Jun Li; Xiaofeng Gong; Lei Shi

doi:10.1016/j.scitotenv.2024.178302

Immobilization or mobilization of heavy metal(loid)s in lake sediment-water interface: Roles of coupled transformation between iron (oxyhydr)oxides and natural organic matter

Sci Total Environ. 2024 Dec 30:959:178302. doi: 10.1016/j.scitotenv.2024.178302. Online ahead of print.

Authors

Yuanhang Li¹, Shaokang Zhang², Hang Fu³, Yuheng Sun³, Shoujuan Tang³, Jinwen Xu⁴, Jun Li³, Xiaofeng Gong⁵, Lei Shi⁶

Affiliations

¹ Engineering Research Center of Watershed Carbon Neutralization, Ministry of Education, Nanchang University, Nanchang 330031, China; School of Resources and Environment, Nanchang University, Nanchang 330031, China; School of Infrastructure Engineering, Nanchang University, Nanchang 330031, China.
² School of Ecology and Environment, Yuzhang Normal University, Nanchang 330103, China.
³ Engineering Research Center of Watershed Carbon Neutralization, Ministry of Education, Nanchang University, Nanchang 330031, China; School of Resources and Environment, Nanchang University, Nanchang 330031, China.
⁴ Engineering Research Center of Watershed Carbon Neutralization, Ministry of Education, Nanchang University, Nanchang 330031, China.
⁵ School of Resources and Environment, Nanchang University, Nanchang 330031, China.
⁶ Engineering Research Center of Watershed Carbon Neutralization, Ministry of Education, Nanchang University, Nanchang 330031, China; School of Resources and Environment, Nanchang University, Nanchang 330031, China. Electronic address: [email protected].

PMID: 39740622
DOI: 10.1016/j.scitotenv.2024.178302

Abstract

Iron (Fe) (oxyhydr)oxides and natural organic matter (NOM) are active substances ubiquitously found in sediments. Their coupled transformation plays a crucial role in the fate and release risk of heavy metal(loid)s (HMs) in lake sediments. Therefore, it is essential to systematically obtain relevant knowledge to elucidate their potential mechanism, and whether HMs provide immobilization or mobilization effect in this ternary system. In this review, we summarized (1) the bidirectional effect between Fe (oxyhydr)oxides and NOM, including preservation, decomposition, electron transfer, adsorption, reactive oxygen species production, and crystal transformation; (2) the potential roles of coupled transformation between Fe and NOM in the environmental behavior of HMs from kinetic and thermodynamic processes; (3) the primary factors affecting the remediation of sediments HMs; (4) the challenges and future development of sediment HM control based on the coupled effect between Fe and NOM from theoretical and practical perspectives. Overall, this review focused on the biogeochemical coupling cycle of Fe, NOM, and HMs, with the goal of providing guidance for HMs contamination and risk control in lake sediment.

Keywords: Coupling transformation; Fe (oxyhydr)oxides; Heavy metal(loid)s; Natural organic matter; Sediment-water interface.

Publication types

Review