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Clay mineral adsorbents for heavy metal removal from wastewater: a review

  • Xinjiang Technical Institute of Physics and Chemistry
  • University of Chinese Academy of Sciences
  • IRD

Research output: Contribution to journalReview articlepeer-review

489 Scopus citations

Abstract

Heavy metal pollution such as water contamination by Pb, Hg, Cu, Cd and Cr ions is induced by rapid urbanization and industrialization and is a major threat to human health. One of the most efficient processes to clean contaminated water is adsorption. Adsorbents such as clay minerals and modified clays are efficient for the removal of metal ions from wastewater. This manuscript reviews current research in heavy metal adsorption by clay minerals such as halloysite, bentonite, montmorillonite, vermiculite and attapulgite, from 2013 to 2017, and highlights the main adsorption mechanisms. The structure, composition and synthesis of various clay minerals and modified clays are presented.

Original languageEnglish
Pages (from-to)629-654
Number of pages26
JournalEnvironmental Chemistry Letters
Volume17
Issue number2
DOIs
StatePublished - 15 Jun 2019
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Adsorption properties
  • Clays and modified clays
  • Environmental remediation
  • Heavy metal removal

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