Adsorption and kinetic studies of methylene blue on zeolite synthesized from fly ash

Batch sorption experiments were carried out to remove methylene blue from its aqueous solutions using zeolite synthesized from fly ash as an adsorbent. Nearly 10 min of contact time are found to be sufficient for the adsorption of dye to reach equilibrium. Equilibrium data have been analyzed using L...

Full description

Saved in:
Bibliographic Details
Published in:Desalination and water treatment 2009-02, Vol.2 (1-3), p.231-239
Main Authors: Fungaro, Denise Alves, Bruno, Mariza, Grosche, Lucas Caetano
Format: Article
Language:English
Subjects:
Adsorption Kinetics
Applied sciences
Drinking water and swimming-pool water. Desalination
Dye adsorption
Exact sciences and technology
Methylene blue
Pollution
Thermodynamics
Water treatment and pollution
Zeolite
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Batch sorption experiments were carried out to remove methylene blue from its aqueous solutions using zeolite synthesized from fly ash as an adsorbent. Nearly 10 min of contact time are found to be sufficient for the adsorption of dye to reach equilibrium. Equilibrium data have been analyzed using Langmuir and Freundlich isotherms and the results were found to be well represented by the Freundlich isotherm equation. Adsorption data were fitted to both Lagergren first-order and pseudo-second-order kinetic models and the data were found to follow pseudo-second-order kinetics. Thermodynamic calculations suggest that the adsorption of methylene blue on zeolite synthesized from fly ash is spontaneous and exothermic reaction.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.5004/dwt.2009.305