EQUILIBRIUM AND KINETIC STUDIES ON THE REMOVAL OF BASIC DYE USING RAW AND THERMAL-ACTIVATED FATSA BENTONITE


EREN E., ÇAĞLAR B., EREN B., Tabak A.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.19, no.5, pp.773-782, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 5
  • Publication Date: 2010
  • Title of Journal : FRESENIUS ENVIRONMENTAL BULLETIN
  • Page Numbers: pp.773-782

Abstract

The adsorption behavior of crystal violet (CV(+)) from aqueous solution onto raw Fatsa (RFB) and thermal-activated Fatsa (TAFB) bentonite samples was investigated as a function of parameters, such as pH, temperature, initial CV(+) concentration and contact time. X-ray diffraction (XRD) and differential thermal analysis (DTA) were used for structural and thermal characterization. The Langmuir and Freundlich adsorption models were applied to describe the equilibrium isotherms. The pseudo-first-order, pseudo-second-order kinetic and intra-particle diffusion models were used to describe the kinetic data.