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Experimental Evaluation of Methane Adsorptionon Granular Activated Carbon (GAC) and Determination of Model Isotherm

Authors: M. Delavar, A.A. Ghoreyshi, M. Jahanshahi, M. Irannejad

Abstract:

This study investigates the capacity of granular activated carbon (GAC) for the storage of methane through the equilibrium adsorption. An experimental apparatus consist of a dual adsorption vessel was set up for the measurement of equilibrium adsorption of methane on GAC using volumetric technique (pressure decay). Experimental isotherms of methane adsorption were determined by the measurement of equilibrium uptake of methane in different pressures (0-50 bar) and temperatures (285.15-328.15°K). The experimental data was fitted to Freundlich and Langmuir equations to determine the model isotherm. The results show that the experimental data is equally well fitted by the both model isotherms. Using the experimental data obtained in different temperatures the isosteric heat of methane adsorption was also calculated by the Clausius-Clapeyron equation from the Sips isotherm model. Results of isosteric heat of adsorption show that decreasing temperature or increasing methane uptake by GAC decrease the isosteric heat of methane adsorption.

Keywords: Methane adsorption, Activated carbon, Modelisotherm, Isosteric heat

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1060810

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References:


[1] D. Lozano, M.A. De la Casa, J. Alca˜niz, D. Cazorla, A. Linares, "Advances in the study of methane storage in porous carbonaceous materials", Fuel, 81, 1777(2002).
[2] D.D. Do, H.D. Do, "Adsorption of supercritical fluids in non-porous and porous carbons: analysis of adsorbed phase volume and density", Carbon, 41, 1777 (2003).
[3] K. Kaneko, K. Murata, K. Shimizu, S. Camara, T. Suzuki, "Enhancement effect of micropore filling for supercritical methane by MgO dispersion", Langmuir, 9, 1165 (1993).
[4] O. Talu, An overview of adsorptive storage of natural gas, in: M. Suzuki(Ed.), "Proceeding of the Fourth International Conference on Fundamentals of Adsorption, Kodansha, Tokyo, p. 655(1992).
[5] Lozano -Castello D, Alcaniz-Monge J, Casa-Lillo MA, Cazorla-Amoros D, Linares- Solano A. "Advances in the study of methane storage in porous carbonaceous materials". Fuel, 81, 1777 (2002).
[6] NODA.Y, YAMADA.K, ISHIBASHI.K, KUMAMOTO.S, TAKAHASHI Y, KOBASHI.T, TAKAGI. J, "Production of activated carbon from acrylonitrile and methyl acrylate copolymers". Nihon Enerugi Gakkaishi, 72, 476 ( 1993).
[7] Ahmadpour A, Do DD. "The preparation of activated carbon from macadamia nutshell by chemical activation". Carbon, 35, 1723(1997).
[8] C.E. Holland, S.A. Al-Muhtaseb, J.A. Ritter, Adsorption of C1-C7 normal alkanes on BAX activated carbon. 1. Potential theory correlation and adsorbent characterization, Ind. Eng. Chem. Res. 40 (2001) 319.
[9] C.E. Holland, S.A. Al-Muhtaseb, J.A. Ritter, Adsorption of C1-C7 normal alkanes on BAX activated carbon. 2. Statistically optimized approach for deriving thermodynamic properties from the dsorption isotherm, Ind. Eng. Chem. Res. 40 (2001) 338.
[10] K.S.Walton, C.L. Cavalcante, D.LeVan, Adsorption equilibrium of alkanes on a high surface area activated carbon prepared from Brazilian coconut shells, Adsorption 11 (2005) 107.
[11] K.S. Walton, C.L. Cavalcante, D. LeVan, Adsorption of light alkanes on coconut nanoporous activated carbon, Braz. J. Chem Eng. 23 (2006) 555.
[12] S.M. Taqvi, M.D. LeVan, A simple way to describe nonisothermal adsorption equilibrium data using polynomials orthogonal to summation,Ind. Eng. Chem. Res. 36 (1997) 419.
[13] S.A. Al-Muhtaseb, J.A. Ritter,Newvirial-type model for predicting singleand multicomponent isosteric heats of adsorption, Ind. Eng.Chem. Res. 37 (1998) 684
[14] S.A. Al-Muhtaseb, J.A. Ritter, Further modification of the Antoine equation for correlation of adsorption equilibria, Langmuir 14 (1998)5317.
[15] D.M. Ruthven, "Principles of adsorption and adsorption processes". John Wiley & Sons, 1, 243-253 (1999).
[16] I.A.A.C. Esteves, Gas separation processes by integrated adsorption and permeation technologies, Ph.D. Thesis, Universidade Nova de Lisboa (FCT/UNL), Lisbon, 2005.
[17] R.T. Yang, Gas Separation by Adsorption Processes, Butterworths, Stoneham, MA, 1987.
[18] D.D. Do, Adsorption Analysis: Equilibria and Kinetics, Series in Chem. Eng., Imperial College Press, 1998.