Recent Progress of Remediating Heavy Metal Contaminated Soil Using Layered Double Hydroxides as Super-Stable Mineralizer

Authors

  • Tong Lin State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Haoran Wang State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Tianyang Shen State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Zhuoqun Deng State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Ruifa Chai State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Xinyuan Sun State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Dongyuan Cui State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
  • Sai An State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China; Quzhou Institute for Innovation in Resource Chemical Engineering, Quzhou, Zhejiang Province, 324000 P. R. China
  • Wei Chen State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China; Quzhou Institute for Innovation in Resource Chemical Engineering, Quzhou, Zhejiang Province, 324000 P. R. China
  • Yu-Fei Song State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China; Quzhou Institute for Innovation in Resource Chemical Engineering, Quzhou, Zhejiang Province, 324000 P. R. China

DOI:

https://doi.org/10.2533/chimia.2023.733

PMID:

38047840

Keywords:

Heavy metals, Large-scale preparation, LDHs, Soil remediation, Super-stable mineralization

Abstract

Heavy metal contamination in soil, which is harmful to both ecosystem and mankind, has attracted worldwide attention from the academic and industrial communities. However, the most-widely used remediation technologies such as electrochemistry, elution, and phytoremediation. suffer from either secondary pollution, long cycle time or high cost. In contrast, in situ mineralization technology shows great potential due to its universality, durability and economical efficiency. As such, the development of mineralizers with both high efficiency and low-cost is the core of in situmineralization. In 2021, the concept of ‘Super-Stable Mineralization’ was proposed for the first time by Kong et al.[1] The layered double hydroxides (denoted as LDHs), with the unique host–guest intercalated structure and multiple interactions between the host laminate and the guest anions, are considered as an ideal class of materials for super-stable mineralization. In this review, we systematically summarize the application of LDHs in the treatment of heavy metal contaminated soil from the view of: 1) the structure–activity relationship of LDHs in in situ mineralization, 2) the advantages of LDHs in mineralizing heavy metals, 3) the scale-up preparation of LDHs-based mineralizers and 4) the practical application of LDHs in treating contaminated soil. At last, we highlight the challenges and opportunities for the rational design of LDH-based mineralizer in the future.

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Published

2023-11-29

Issue

Section

Scientific Articles

How to Cite

[1]
T. Lin, H. Wang, T. Shen, Z. Deng, R. Chai, X. Sun, D. Cui, S. An, W. Chen, Y.-F. Song, Chimia 2023, 77, 733, DOI: 10.2533/chimia.2023.733.