Adsorption/electrosorption of catechol and resorcinol onto high area activated carbon cloth

BAYRAM E., HODA N., Ayranci E.

JOURNAL OF HAZARDOUS MATERIALS, vol.168, no.2-3, pp.1459-1466, 2009 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 168 Issue: 2-3
  • Publication Date: 2009
  • Doi Number: 10.1016/j.jhazmat.2009.03.039
  • Journal Name: JOURNAL OF HAZARDOUS MATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1459-1466
  • Keywords: Catechol, Resorcinol, Adsorption, Electrosorption, Activated carbon cloth, ELECTROCHEMICALLY ENHANCED ADSORPTION, AQUEOUS-SOLUTION, WASTE-WATERS, REMOVAL, ELECTROSORPTION, ELECTRODES, EQUILIBRIUM, ACID, PURIFICATION, BEHAVIORS
  • Akdeniz University Affiliated: Yes

Abstract

Removal of catechol and resorcinol from aqueous solutions by adsorption and electrosorption onto high area activated carbon cloth (ACC) was investigated. Kinetics of both adsorption and electrosorption were followed by in-situ UV-spectroscopic method and the data were treated according to pseudo-first-order, pseudo-second-order and intraparticle diffusion models. It was found that the adsorption and electrosorption of these compounds onto ACC follows pseudo-second-order model. pH changes during adsorption and electrosorption were followed and discussed with regard to the interaction between ACC and adsorbate molecules, utilizing the pH(pzc) value of ACC. An electrodesorption experiment was conducted to explore the possibility of regeneration of ACC. Adsorption isotherms were derived at 25 degrees C on the basis of batch analysis. The fits of experimental isotherm data to the well-known Freundlich, Langmuir and Tempkin models were examined. (C) 2009 Elsevier B.V. All rights reserved.