Comparison of modified montmorillonite adsorbents: Part I: preparation, characterization and phenol adsorption

Jia-Qian Jiang, Colin Cooper, Sabeha Ouki

Research output: Contribution to journalArticlepeer-review

295 Citations (Scopus)

Abstract

This study concerns with the development of modified montmorillonites as adsorbents for water treatment. Polymeric aluminium and iron intercalated forms of montmorillonites have been prepared in the absence and presence of an alkylammonium cationic surfactant (Hexdecyl-trimethyl-ammonium bromide, HDTMA). Montmorillonites intercalated with polymeric Al, Fe, Fe/Al (2:1 Fe to Al ratio in solution), possess large N2 Brunauer-Emmett-Teller (BET) surface areas. XRD data also shows trace amounts of illite and plagioclase within the clay materials. Montmorillonites intercalated with HDTMA, polymeric Fe/HDTMA, polymeric Al/HDTMA and polymeric Fe/Al/HDTMA (1:1 metal to surfactant molar ratio in solution) undergo some losses of N2 BET surface areas. Preliminary adsorption studies on phenol have shown that polymeric Al/HDTMA- and HDTMA-only-modified montmorillonites possess a good affinity for phenol, whereas the polymeric Al/Fe modified- and starting montmorillonites have little affinity for phenol adsorption.

Original languageEnglish
Pages (from-to)711-716
Number of pages6
JournalChemosphere
Volume47
Issue number7
Early online date3 Feb 2002
DOIs
Publication statusPublished - May 2002
Externally publishedYes

Keywords

  • Adsorption
  • Clay
  • Modification
  • Polymeric Al/Fe
  • Water treatment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Chemistry(all)
  • Pollution
  • Health, Toxicology and Mutagenesis

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