Adsorption of nitrate ions onto sepiolite and surfactant-modified sepiolite

Özcan A., Şahin M., Özcan A. S.

Adsorption Science, vol.23, no.4, pp.323-333, 2005 (SCI-Expanded)

  • Publication Type: Article / Article
  • Volume: 23 Issue: 4
  • Publication Date: 2005
  • Journal Name: Adsorption Science
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.323-333
  • Yıldız Technical University Affiliated: No


The adsorption of nitrate ions onto clay minerals has not been given much attention, possibly because clay surfaces are negatively charged. In order to increase the positive charge on the surface, sepiolite was modified in the present studies by treatment with dodecylethyldimethyl ammonium (DEDMA) bromide. After such modification, it was found that the maximum amount of nitrate ion adsorbed occurred at a pH value of 2.0.