Recent advances on decomplexation mechanisms of heavy metal complexes in persulfate-based advanced oxidation processes

Shili Wang ¹Mamitiana Roger Razanajatovo ¹Xuedong Du ¹Shunli Wan ²Xin He ³Qiuming Peng ¹Qingrui Zhang⁴

扫码查看

作者信息

1. State Key Laboratory of Metastable Materials Science and Technology,Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse,Yanshan University,Qinhuangdao 066004,China
2. College of Life & Environment Sciences,Huangshan University,Huangshan 245041,China
3. Hebei Key Laboratory of Agroecological Safetye Key Laboratory,Hebei University of Environmental Engineering,Qinhuangdao 066102,China
4. State Key Laboratory of Metastable Materials Science and Technology,Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse,Yanshan University,Qinhuangdao 066004,China;Hebei Key Laboratory of Agroecological Safetye Key Laboratory,Hebei University of Environmental Engineering,Qinhuangdao 066102,China
折叠

Abstract

In some industrial wastewater,heavy metals combine with organic complexing agents to form heavy metal complexes(HMCs).These HMCs can be difficult to decompose and remove through conventional techniques due to their higher stability than free heavy metal ions.In recent years,persulfate based ad-vanced oxidation processes(PS-based AOPs)have been recognized as a viable technique for HMCs degra-dation.Nevertheless,a comprehensive and in-depth understanding of the relevant HMCs decomplexation mechanisms in PS-based AOPs is still lacking.This review delineates the current progress of HMCs de-complexation in PS-based AOPs.We discuss the distinctions between the two widely used oxidant types in PS-based AOPs techniques.Moreover,we summarize and highlight the decomplexation mechanisms based on electron and energy transfer,and degradation pathways of HMCs.We also emphasize the ef-fects of environmental water constituents,namely pH,inorganic ions,and natural organic matter(NOM),on HMCs decomplexation.Ultimately,we identify the existing challenges and perspectives that will steer the direction of advancing PS-based AOPs to remove HMCs.

Key words

Heavy metal complexes/Persulfate/Advanced oxidation processes/Decomplexation mechanisms/Electron and energy transfer

引用本文复制引用

基金项目

National Natural science Foundation of China(U22A20403)

National Natural science Foundation of China(22006047)

Natural Science Foundation of Hebei Province(E2021203140)

Natural Science Foundation of Hebei Province(B2021203016)

Hebei Industrial Innovation and Entrepreneurship team(215A7608D)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCDCSCD

影响因子：0.771

ISSN：1001-8417

参考文献量2

段落导航