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Title: Isotherms and thermodynamics for the adsorption of n-butane on pitch based activated carbon
Authors: Saha, B.B.
Chakraborty, A.
Koyama, S.
Yoon, S.-H.
Mochida, I.
Kumja, M. 
Yap, C. 
Ng, K.C. 
Keywords: Activated carbon
Heat of adsorption
Thermodynamic property fields
Issue Date: 2008
Citation: Saha, B.B., Chakraborty, A., Koyama, S., Yoon, S.-H., Mochida, I., Kumja, M., Yap, C., Ng, K.C. (2008). Isotherms and thermodynamics for the adsorption of n-butane on pitch based activated carbon. International Journal of Heat and Mass Transfer 51 (7-8) : 1582-1589. ScholarBank@NUS Repository.
Abstract: The adsorption isotherms of n-butane on pitch based activated carbon (type Maxsorb III) at temperatures ranging from 298 to 328 K and at different equilibrium pressures between 20 and 300 kPa have been experimentally measured by a volumetric technique. The porous properties such as, the density, Brunauer-Emmett-Teller (BET) surface area, pore size, pore volume along with pore size distribution (PSD) of Maxsorb III have been determined. The Dubinin-Astakhov (DA) adsorption isotherm model describes all of the isotherm experimental data within the acceptable error ranges. The present isotherm data are compared with other published data of activated carbon (AC)/n-butane and showed the superiority of the present findings in terms of uptake capacity. The isosteric heat of adsorption (ΔHads) of n-butane on Maxsorb III is calculated for different loading. Using the adsorption isotherms and ΔHads, the thermodynamic property maps as a function of pressure, temperature and adsorbate amount are also presented. © 2007 Elsevier Ltd. All rights reserved.
Source Title: International Journal of Heat and Mass Transfer
ISSN: 00179310
DOI: 10.1016/j.ijheatmasstransfer.2007.07.031
Appears in Collections:Staff Publications

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