Citation: Guoqing Wu, Xubiao Luo, Yanbo Zhou. Recent advance of heavy metal complexes treatment: Conventional, oxidative, and reductive strategies[J]. Chinese Chemical Letters, ;2026, 37(11): 112569. doi: 10.1016/j.cclet.2026.112569 shu

Recent advance of heavy metal complexes treatment: Conventional, oxidative, and reductive strategies

Guoqing Wu ^{a, b} ,
Xubiao Luo ^a ,
Yanbo Zhou ^{a, b, c, *,}

a.
School of Life Sciences, Key Laboratory of Jiangxi Province for Functional Biology and Pollution Control in Red Soil Regions, Jinggangshan University, Ji’an 343009, China
b.
State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai 200237, China
c.
Engineering Research Center of Resource Utilization of Carbon-containing Waste with Carbon Neutrality, Ministry of Education, Shanghai 200237, China

zhouyanbo@jgsu.edu.cn

Received Date: 30 July 2025
Revised Date: 17 January 2026
Accepted Date: 2 March 2026
Available Online: 5 March 2026

Figures(6)

The widespread use of complexing agents (e.g., ethylenediaminetetraacetic acid, citrate) in industrial processes has resulted in the predominance of highly stable heavy metal complexes (HMCs) in wastewater. Conventional treatment technologies are rendered ineffective due to steric hindrance and strong coordination stability inherent to these complexes. To address this emerging challenge, diverse strategies for treating HMCs-contaminated wastewater have been developed. While advanced oxidation processes (AOPs) dominate current research, the adaptive optimization of conventional methods and the untapped potential of efficient reduction technologies remain significantly understudied. This review systematically integrates three technological frameworks, enhanced conventional processes, AOPs-based decomplexation, and high-efficiency reductive recovery, thereby bridging a critical knowledge gap. We comprehensively evaluate recent advances in HMCs treatment technologies, discussing their mechanisms, performance-enhancing strategies, and key limitations. Furthermore, we identify fundamental barriers to industrial translation and propose potential solutions, aiming to provide actionable guidance for managing complex heavy metal pollution.
- Heavy metal complexes,
- Industrial wastewater treatment,
- Metal recovery,
- Advanced oxidation processes,
- Electrochemical technology
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沈阳化工大学材料科学与工程学院沈阳 110142