Table of Contents
Advances in Environmental Chemistry
Volume 2015 (2015), Article ID 349254, 8 pages
http://dx.doi.org/10.1155/2015/349254
Research Article

Modified Cenospheres as an Adsorbent for the Removal of Disperse Dyes

1Department of Civil Engineering, Institute of Engineering and Technology, Lucknow 226021, India
2Department of Civil Engineering, Indian Institute of Technology (BHU), Varanasi 221005, India
3Department of Environmental Engineering, IIT Roorkee and AIT, Bangkok, Bhargava Lane, Devpura, Haridwar 249401, India
4Environmental Monitoring Division, CSIR-Indian Institute of Toxicology Research, M.G. Marg, Lucknow 226001, India

Received 23 December 2014; Revised 4 March 2015; Accepted 4 March 2015

Academic Editor: Jesus Simal-Gandara

Copyright © 2015 Markandeya Tiwari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The main objective of this investigation was to use modified cenospheres for the removal of disperse blue 79:1 (DB) and disperse orange 25 (DO) dyes from aqueous solution by batch adsorption process under different conditions (pH, adsorbent dose, adsorbate concentration, agitation speed, contact time, and temperature). Modified cenosphere was capable of removing up to 78% of DB and 81% of DO dyes from aqueous solutions of 40 mg/L dyes concentration. The investigated data was explained by the Langmuir isotherm. The experimental data were found to follow the pseudo-second-order kinetic model. The results of this study suggested that modified cenospheres could be used as a low-cost alternative to expensive adsorbents like activated carbon in wastewater treatment for the removal of disperse dyes.