American Journal of Analytical Chemistry

Volume 6, Issue 6 (May 2015)

ISSN Print: 2156-8251   ISSN Online: 2156-8278

Google-based Impact Factor: 1.71  Citations  h5-index & Ranking

Surface Modification of Commercial Activated Carbon (CAG) for the Adsorption of Benzene and Toluene

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DOI: 10.4236/ajac.2015.66051    5,947 Downloads   8,313 Views  Citations

ABSTRACT

In this work, we determined the surface characteristics of natural (CA-1) and HNO3 treated (CA-2) CAG. Equilibrium, kinetics and breakthrough for adsorption of benzene and toluene by CA-1 and CA-2 were studied. Concentrations of benzene and toluene (mg/L) were determined by gas chromatography with headspace extraction. The data of adsorption kinetic and equilibrium were best fitted by pseudo-second order model and Langmuir isotherm, respectively. The best results of benzene and toluene adsorption from fixed bed were obtained at volumetric flow rate (Q1 = 70 mL/min) using adsorbent CA-2. The study of inferential statistics revealed that CA-1 and CA-2 adsorbents are statistically different at a 5% significance level.

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da Costa Lopes, A. , de Carvalho, S. , do Socorro Barros Brasil, D. , de Alcântara Mendes, R. and Lima, M. (2015) Surface Modification of Commercial Activated Carbon (CAG) for the Adsorption of Benzene and Toluene. American Journal of Analytical Chemistry, 6, 528-538. doi: 10.4236/ajac.2015.66051.

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