Ion exchange of some heavy metal ions from polar organicsolvents into zeolite

V. J. Inglezakis, M. D. Loizidou

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

In the present study the possibility of ion exchange of heavy metal ions using polar organic solvents and naturalzeolite clinoptilolite is approached. The organic solvents used are nearly pure ethanol and acetone. These solventsare compared to deionized water. The heavy metal ions studied are Cu2+, Cr3+ and Fe3+. While ion exchange levelsin water are much greater for Fe3+ (53.1%) in comparison to ethanol (12.5%) and acetone (3.1%), Cr3+ is exchangedin satisfactory levels in ethanol (46.8 and 27.4% respectively) and Cu2+ in acetone (23.8 and 26.6% respectively).Infrared (IR) and ultraviolet/visible (UV-Vis) spectrometry showed that complexes are formed, which are differentin each solvent. It is concluded that the cation-solvent complex strength and charge, the possible rejection ofloosely attached solvent molecules, the formation of precipitates, the properties of the solvent and free cations andthe diameter of zeolite pore openings are all affecting the uptake of metals. Finally, the ion exchange of metalsusing zeolites is possible to take place in polar organic solvents and one significant finding is that selectivity can betotally changed.

Original languageEnglish
Pages (from-to)238-248
Number of pages11
JournalDesalination
Volume211
Issue number1-3
DOIs
Publication statusPublished - Jun 10 2007
Externally publishedYes

Fingerprint

Zeolites
Heavy Metals
Heavy ions
zeolite
Heavy metals
Metal ions
ion exchange
Ion exchange
Acetone
acetone
heavy metal
Organic solvents
ethanol
Ethanol
ion
Cations
cation
Positive ions
clinoptilolite
Deionized water

Keywords

  • Clinoptilolite
  • Heavy metals
  • Ion exchange
  • Organic solvents
  • Zeolites

ASJC Scopus subject areas

  • Filtration and Separation

Cite this

Ion exchange of some heavy metal ions from polar organicsolvents into zeolite. / Inglezakis, V. J.; Loizidou, M. D.

In: Desalination, Vol. 211, No. 1-3, 10.06.2007, p. 238-248.

Research output: Contribution to journalArticle

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