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Vol. 25 No. 7 (2013): Vol 25 Issue 7

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Influence of pH on Fumaric Acid Adsorption by Basic Ion-Exchange Resins

https://doi.org/10.14233/ajchem.2013.13744
Yong-Qian Fu
College of Life Science, Taizhou University, Linhai 317000, Zhejiang, P.R. China
Hua-Yue Zhu
College of Life Science, Taizhou University, Linhai 317000, Zhejiang, P.R. China
Ru Jiang
College of Life Science, Taizhou University, Linhai 317000, Zhejiang, P.R. China
Long-Fei Yin
College of Life Science, Taizhou University, Linhai 317000, Zhejiang, P.R. China
Qi-Cheng Ruan
College of Life Science, Taizhou University, Linhai 317000, Zhejiang, P.R. China
Shi-Bin Ren
College of Life Science, Taizhou University, Linhai 317000, Zhejiang, P.R. China

Corresponding Author(s) : Yong-Qian Fu

fuyq@tzc.edu.cn

Asian Journal of Chemistry, Vol. 25 No. 7 (2013): Vol 25 Issue 7

Abstract

The effects of pH on the adsorption of fumaric acid by basic ion-exchange resins were investigated. The adsorption isotherms of the strong-base resin IRA-400 and the weak-base resin IRA-94 were investigated with aqueous solutions of fumaric acid at different pH and the equilibrium adsorption data obtained being very well fitted by the Freundlich model. The pseudo-first-order and pseudo-second-order kinetic models were applied to describe the kinetic data, with the pseudo-second-order model providing a perfect fit. The value of equilibrium rate constant k2 indicated that the equilibrium rate of IRA-400 resin was much faster than that of IRA-94 resin, but there was no evident discrepancy at different pH for each resin. Breakthrough curves of two resins at different pH were also investigated. The efficiency of adsorption column of IRA-400 resin had no evident correlation with the pH; while the efficiency of adsorption of IRA-94 resin decreased from 64-31 % as the pH increased from 2.0-5.0.

Keywords

Breakthrough curve Basic ion-exchangers Fumaric acid Isotherms Kinetics
Fu, Y.-Q., Zhu, H.-Y., Jiang, R., Yin, L.-F., Ruan, Q.-C., & Ren, S.-B. (2013). Influence of pH on Fumaric Acid Adsorption by Basic Ion-Exchange Resins. Asian Journal of Chemistry, 25(7), 3749–3754. https://doi.org/10.14233/ajchem.2013.13744
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