Adsorption of phenol and chlorophenols on pure and modified sepiolite


Yildiz A., Gur A.

Journal of the Serbian Chemical Society, vol.72, no.5, pp.467-474, 2007 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 72 Issue: 5
  • Publication Date: 2007
  • Doi Number: 10.2298/jsc0705467y
  • Journal Name: Journal of the Serbian Chemical Society
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.467-474
  • Keywords: adsorption, clay, sepiolite, phenol, chlorophenol, ACTIVATED CARBON, AQUEOUS-SOLUTION, SMECTITES, MONTMORILLONITE, NITROPHENOL, CLAYS, WATER

Abstract

In this work, pure sepiolite and sepiolite modified by nitric acid (HNO3), ethylenediaminetetraacetic acid (EDTA) and hexadecyltrimethylammonium (HDTMA) were used ad adsorbents. The changes on the surface were studied by IR spectroscopy. The adsorption of solutions of phenol and phenol derivatives in pure ethanol on these adsorbents were examined by means of gas chromatography. It was found that the adsorption capacities of the clay-organic complexes (sepiolite-EDTA and sepiolite-HDTMA) were higher than those of pure sepiolite and sepiolite-HNO3.