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Journal of Engineering
Volume 2015 (2015), Article ID 139041, 7 pages
Research Article

Modeling Breakthrough Curves of Citric Acid Adsorption onto Anionic Resins in an Aqueous Solution

1Faculty of Engineering, University of Tehran, P.O. Box 11365/4563, Tehran, Iran
2Engineering Department, University of Alberta, Edmonton, AB, Canada T6G 2G8

Received 14 May 2014; Accepted 11 January 2015

Academic Editor: Mohammed A. Gondal

Copyright © 2015 Sohrabali Ghorbanian 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.


Breakthrough curves for citric acid adsorption from aqueous solution onto ion-exchange resin at 20, 35, and 55°C have been investigated. To predict breakthrough curves, three mathematical models have been analyzed based on the values of the least square method parameters, Durbin-Watson test, and mean relative percent error and, finally, appropriate models have been achieved. Models are in good agreement with experimental data based on the results. To examine models reliabilities and accuracy, models have been compared by various breakthrough curve data obtained by other investigators. The results show appropriate agreement and in some cases regression errors have been reduced to less than 1.0 percent.