Removal of textile dye mixtures by using modified Mg-Al-Cl layered double hydroxide (LDH)

Asci Y. S.

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, vol.38, no.7, pp.923-929, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 38 Issue: 7
  • Publication Date: 2017
  • Doi Number: 10.1080/01932691.2016.1215925
  • Journal Name: JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.923-929
  • Keywords: Adsorption, Congo red, indigo carmin, LDH, AQUEOUS-SOLUTION, CONGO RED, INDIGO CARMINE, WASTE-WATER, ADSORPTION, ACID, EQUILIBRIUM
  • Istanbul University Affiliated: No

Abstract

The removal of Indigo Carmin (IC) and Congo Red (CR) dye mixtures using layered double hydroxide (LDH) (modified with sodium dodecyl sulfate (SDS)) has been studied. In the experimental context of this study, LDH was synthesized under a nitrogen atmosphere at room temperature using the coprecipitation method and characterized by Fourier transform infrared specroscopy (FTIR), X-ray diffraction (XRD), energy dispersive analysis of X-rays (EDAX) and scanning electron microscopy (SEM) analyses. Contact time, temperature, and initial dye concentration on the adsorption process have been investigated. Results show that the maximum removal of IC and CR was obtained as about 50% and 95%, respectively. The isothermal data were fitted to Langmuir, Freundlich, and Temkin adsorption isotherms. Elovich and other kinetic model equations were applied. Adsorption depended on the starting naphthalene concentration at investigated various temperatures (298, 308, and 318K) significantly.