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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 4, 2012
Accepted November 5, 2012

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Adsorption of phenol and 1-naphthol onto XC-72 carbon

Liming Zuo Shaoming Yu^† Leilei Cheng Erling Du

School of Chemical Engineering, Anhui Key Laboratory of Controllable Chemical Reaction & Material Chemical Engineering, Hefei University of Technology, Hefei 230009, Anhui, China

Korean Journal of Chemical Engineering, March 2013, 30(3), 714-723(10), 10.1007/s11814-012-0194-x

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Abstract

XC-72 carbon (XC-72) was characterized by SEM, XPS, N2 adsorption-desorption, particle size distribution analysis and potentiometric acid-base titration. The adsorption of phenol and 1-naphthol on XC-72 was studied as a function of contact time, pH, adsorbent content and temperature. The kinetic adsorption data were described well by the pseudo-second-order model. The adsorption isotherms of phenol were described well by Freundlich model, while the adsorption isotherms of 1-naphthol were fitted well by Langmuir model. The results demonstrated that XC-72 had much higher adsorption capacity for 1-naphthol than for phenol. The adsorption thermodynamic data were calculated from the temperature-dependent adsorption isotherms at T=293, 313 and 333 K, and the results indicated that the adsorption of phenol was an exothermic process, whereas the adsorption of 1-naphthol was an endothermic process. XC-72 is a suitable material for the preconcentration of phenol and 1-naphthol from large volumes of aqueous solutions.

Keywords

XC-72 Carbon Adsorption Phenol 1-Naphthol Kinetics

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