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 (Journal Indexed in SCI Expanded)

  • Publication Type: Article / Article
  • Volume: 23 Issue: 4
  • Publication Date: 2005
  • Title of Journal : Adsorption Science
  • Page Numbers: pp.323-333


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.