Adsorption of Brilliant Yellow onto Sepiolite: Evaluation of Thermodynamics and Kinetics and the Application of Nonlinear Isotherm Models


TEKİN N., BAYRAK M. A., CAN E.

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, vol.37, no.12, pp.1783-1792, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 12
  • Publication Date: 2016
  • Doi Number: 10.1080/01932691.2016.1140583
  • Journal Name: JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1783-1792
  • Keywords: Adsorption, brilliant yellow, error analysis, isotherm, sepiolite, OPTIMUM SORPTION ISOTHERM, LOW-COST ADSORBENTS, AQUEOUS-SOLUTIONS, ACTIVATED CARBON, DYE REMOVAL, MALACHITE GREEN, ERROR ANALYSIS, ANIONIC DYE, WATER, MONTMORILLONITE
  • Kocaeli University Affiliated: Yes

Abstract

We studied the adsorption of Brilliant Yellow (BY) from aqueous solutions onto sepiolite and determined the adsorption equilibrium isotherms. We applied pseudo-first-order and pseudo-second-order kinetic models; the adsorption of BY onto sepiolite was best described by the pseudo-second-order kinetic model. The experimental data obtained at different temperatures were analyzed using various isotherm models; the Koble-Corrigan isotherm model provided the best fits for the BY adsorption data at all temperatures. The thermodynamic parameters of the BY adsorption onto sepiolite indicated that the adsorption process is spontaneous and exothermic in nature.