Environmental and Energy Engineering

Equilibrium and kinetics of adsorption of methylene blue on Ti-modified volcanic ashes

  1. P. Esparza1,*,
  2. M. E. Borges2,
  3. L. Díaz2,
  4. M. C. Alvarez-Galván3,
  5. J. L. G. Fierro3

Article first published online: 28 APR 2010

DOI: 10.1002/aic.12285

Issue

AIChE Journal

AIChE Journal

Volume 57, Issue 3, pages 819–825, March 2011

Additional Information

How to Cite

Esparza, P., Borges, M. E., Díaz, L., Alvarez-Galván, M. C. and Fierro, J. L. G. (2011), Equilibrium and kinetics of adsorption of methylene blue on Ti-modified volcanic ashes. AIChE J., 57: 819–825. doi: 10.1002/aic.12285

Author Information

  1. 1

    Inorganic Chemistry Dept., University of La Laguna, Avda. Astrofísico Fco. Sánchez s/n, La Laguna, Tenerife, Canary Island 38200, Spain

  2. 2

    Chemical Engineering Dept., University of La Laguna, Avda. Astrofísico Fco. Sánchez s/n, La Laguna, Tenerife, Canary Island 38200, Spain

  3. 3

    Institute of Catalysis and Petroleum Chemistry, CSIC, C/ Marie Curie 2, Cantoblanco, 28049 Madrid, Spain

*Inorganic Chemistry Dept., University of La Laguna, Avda. Astrofísico Fco. Sánchez s/n, La Laguna, Tenerife, Canary Island 38200, Spain

Publication History

  1. Issue published online: 28 APR 2010
  2. Article first published online: 28 APR 2010
  3. Accepted manuscript online: 28 APR 2010 12:00AM EST
  4. Manuscript Revised: 16 APR 2010
  5. Manuscript Received: 23 DEC 2009

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article (HTML) Get PDF (675K)

Keywords:

  • dyes;
  • methylene blue;
  • adsorption isotherm;
  • kinetic model;
  • volcanic ashes;
  • nanomaterials

Abstract

Volcanic ashes (VAs) and Ti-modified volcanic ashes (TVA) were investigated as inexpensive adsorbents to remove methylene blue (MB) from aqueous solutions. TVA displayed higher and faster MB adsorption than VA. Adsorption studies were carried out in a batch system at room temperature. In this work, several variables were studied: contact time, pH, initial MB concentration, and adsorbent dosage. The equilibrium data of MB adsorption were analyzed according to the Langmuir and Freundlich adsorption isotherm models. Optimum adsorption performance for TVAs particles, prepared using a hydrothermal method, was obtained at pH = 10 and 3 g/l adsorbent dose. MB adsorption isotherm data can be described satisfactorily by the Langmuir equation, whereas adsorption kinetic data fit a pseudo second-order kinetics model. © 2010 American Institute of Chemical Engineers AIChE J, 2011

View Full Article (HTML) Get PDF (675K)