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Journal of Chemistry
Volume 2015, Article ID 495257, 9 pages
http://dx.doi.org/10.1155/2015/495257
Research Article

Calcium Pretreated Hevea brasiliensis Sawdust for Copper Removal: Batch and Column Study

1Department of Environmental Engineering, NIT Agartala, Tripura 799046, India
2Department of Civil Engineering NIT Agartala, Tripura 799046, India

Received 10 September 2015; Accepted 25 October 2015

Academic Editor: Wenshan Guo

Copyright © 2015 Swarup Biswas and Umesh Mishra. 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

Calcium pretreated Hevea brasiliensis sawdust has been used as an effective and efficient adsorbent for the removal of copper ion from the contaminated water. Batch experiment was conducted to check the effect of pH, initial concentration, contact time, and adsorbent dose. The results conclude that adsorption capacity of adsorbent was influenced by operating parameters. Maximum adsorption capacity found from the batch adsorption process was 37.74 mg/g at pH of 5.6. Various isotherm models like Langmuir, Freundlich, and Temkin were used to compare the theoretical and experimental data, whereas the pseudo-first-order, pseudo-second-order, and intraparticle diffusion models were applied to study the kinetics of the batch adsorption process. Dynamic studies were also conducted in packed-bed column using different bed depths and the maximum adsorption capacity of 34.29 was achieved. Characterizations of the adsorbent were done by Fourier transform infrared spectroscopy, scanning electron microscope, and energy dispersive X-ray spectroscopy.