Removal of arsenic from water by iron oxide nanoparticles impregnated on carbon nanotubes

Bassam S. Tawabini, Salman F. Al-Khaldi, Mazen M. Khaled, Muataz Atieh

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

The removal of Arsenic (As (III)) ions from water using modified multi-walled carbon nanotubes (MCNTs) was demonstrated in this study. Results of the study showed that raw (non-modified) MCNTs have very poor efficiency in removing As (III) from water by conventional adsorption mechanisms. However, when MCNTs were modified with iron oxide (Fe-MCNTs), a significant improvement in the As (III) removal efficiency was observed. Results of the study also showed that Fe-MCNTs have much higher efficiency in removing As (III) than MCNTs modified with carboxyl group (COOH-MCNTs). Under the experimental conditions used in the study, about 77.5% of As (III) removal was achieved by the Fe-MCNTs, while COOH-MCNTs removed only 11% at pH 5. In addition, the adsorption kinetics of MCNTs indicated that there is a strong affinity of As (III) ions to the surface of the Fe-MCNTs.

Original languageEnglish
Pages (from-to)215-223
Number of pages9
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume46
Issue number3
DOIs
Publication statusPublished - Feb 2011
Externally publishedYes

Fingerprint

Arsenic
Iron oxides
Carbon nanotubes
Nanoparticles
Water
Adsorption
Ions
Kinetics

Keywords

  • arsenic
  • heavy metals
  • Modified CNTs
  • non-modified carbon nanotubes (CNTs)
  • water treatment

ASJC Scopus subject areas

  • Environmental Engineering

Cite this

Removal of arsenic from water by iron oxide nanoparticles impregnated on carbon nanotubes. / Tawabini, Bassam S.; Al-Khaldi, Salman F.; Khaled, Mazen M.; Atieh, Muataz.

In: Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, Vol. 46, No. 3, 02.2011, p. 215-223.

Research output: Contribution to journalArticle

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