Preparation of modified clay adsorbents for the removal of humic acid

Jia-Qian Jiang, Colin Cooper

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

By replacing the natural interlayer cations of montmorillonites with polymeric Al/Fe species, the properties of clay surfaces can be modified, and this allows them to interact with both organic and inorganic pollutants dissolved in water. This paper reports the use of modified clays as the adsorbents for removing humic substance from model waters. The order of the affinity of various clays to humic acid is: polymeric Fe/Al-modified > polymeric Al-modified > polymeric Fe modified > unmodified (starting) clay, and this demonstrates that polymeric Al/Fe-modified montmorillonites are potential efficient adsorbent for treating color-causing natural organic matter.

Original languageEnglish
Pages (from-to)581-586
Number of pages6
JournalEnvironmental Engineering Science
Volume20
Issue number6
DOIs
Publication statusPublished - 6 Jun 2004
Externally publishedYes

Keywords

  • Adsorption
  • Clay
  • Humic acid
  • Montmorillonite
  • Natural organic matter (NOM)
  • Polymeric Al/Fe species
  • Water treatment

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

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