CO2 Adsorption on HZSM-5 Zeolite : Mass Transport Study in A Packed Bed Adsorber

  • Sang Kompiang Wirawan Department of Chemical Engineering, Gadjah Mada University, and Chemical Reaction Engineering, Chalmers University of Technology, Göteborg, Sweden
  • Ihda Novia Indrajati Department of Chemical Engineering, Gadjah Mada University
  • Wahyudi B Sediawan Department of Chemical Engineering, Gadjah Mada University
  • Panut Mulyono Department of Chemical Engineering, Gadjah Mada University
Keywords: transient, step-change, surface diffusion, Maxwell-Stefan

Abstract

Experimental and modeling have been done to study and to determine the diffusion parameters of CO2 adsorption on HZSM-5 zeolite in a packed­bed adsorber. Experiment works consisted of tracer and adsorption experiments. The feed gas concentrations were 40 and 80% CO2 in helium within various temperatures of 373, 423 and 473 K. The experiments were conducted by using transient step change adsorption. Tracer experiments using 20% Ar/He were conducted to measure dispersion and time lag effect of the packed bed system. A model of CO2 adsorption on HZSM­5 had been set up for transient packed­bed adsorber by assuming plug flow, isothermal and isobaric, single site Langmuir physisorption, no gas film mass transport resistance and Maxwell­Stefan mass transport in micropore applied. All the data were then optimized to get the best value of modified fitted parameter. The results indicated that at higher temperature, the quantities of gas adsorbed were decrease. This was due to lower adsorption capacity which occurs at higher temperature. The model was in a good agreement with the experiment data. Diffusivity tended to increase by increasing temperatures.

References

1. Calleja, G., Pau, J., Calles, J.A. (1998). "Pure and Multicomponent Adsorption Equilibrium of Carbon Dioxide, Ethylene and Propane on ZSM-5 Zeolites with Different SiAl Ratios," J. Chem. Eng. Data, 43, 994.
2. Choudhary, VR., Mayadevi, R., Rao, M., Sircar, S., Gorte, R.J., Myers, A.L. (1996). "Calorimetric Heats of Adsorption and Adsorption Isotherms. 1. O2, N2, Ar, CO2, CH4, C2H6, and SF6 on Silicalite," Langmuir, 12, 5888.
3. Cutlip, M. B. and Shacham, M.,(2000). Problem Solving in Chemical Engineering with Numerical Methods, Prentice¬Hall, Inc., New Jersey, pp.112¬114.
4. Dunne, J.A., Mariwala, R, Rao, M., Sircar, S., Gorte, R.J., Myers, A.L. (1996). "Calorimetric Heats of Adsorption and Adsorption Isotherms. 1. O2, N2, Ar, CO2, CH4, C2H6, and SF6 on Silicalite," Langmuir, 12, 5888.
5. Fogler, H. S., (1999), Element of Chemical Reaction Engineering, 3rd ed., Prentice¬ Hall, Inc., New Jersey, 809¬887 Golden, T.C., Sircar, S. (1994). "Gas Adsorption on Silicalite," J. Colloid Interface Sci., 162, 182.
6. Harlick, P.J.E., Tezel, F.H. (2002). "Adsorption of Carbon Dioxide, Methane and Nitrogen: Pure and Binary Mixture Adsorption by ZSM-5 with SiO2/Al2O3 Ratio of 30," Sep. Sci. Technol., 37, 33.
7. Harlick, P.J.E., Tezel, F.H. (2003). "Adsorption of carbon dioxide, methane and nitrogen: pure and binary mixture adsorption for ZSM-5 with SiO2/Al2O3 ratio of 280," Sep. Purif. Technol., 33, 199.
8. Harlick, P.J.E., Tezel, F.H. (2004). "An experimental adsorbent screening study for CO2 removal from N2," Microporous Mesoporous Mater., 76, 71.
9. Katoh, M., Yoshikawa, T., Tomonari, T., Katayama, K., Tomida, T. (2000). "Adsorption Characteristics of Ion-Exchanged ZSM-5 Zeolites for CO2/N2 Mixtures," J. Colloid Interface Sci., 226, 145.
10. Koriabkina, A. O., de Jong, A. M., Hensen, E. J. M. and van Santen, R. A.( 2005). Concentration and Temperature Dependence of The Diffusivity of n¬Hexane in MFI Zeolites, 50 CO2 Adsorption on HZSM-5 Zeolite : Mass Transport Study in A Packed Bed Adsorber Micropor. Mesopor. Mater., 77: 119¬129
11. Krishna, R. and Baur, R. (2003). Modelling Issues in Zeolite Based Separation Processes, Sep. Purif. Technol., 33: 213¬245
12. Kärger, J., Pfeifer, H., Stallmach, F., Feokistova, N. N. and Zhdanov, S. P., (1993). 129 Xe and 13 C PFG n.m.r. Study of The Intracrystalline Selfdiffusion of Xe, CO2 and CO, Zeolites, 13: 5055
13. Otto, K., Montreuil, C.N., Todor, O., McCabe, R.W., Gandhi, H.S. (1991). "Adsorption of hydrocarbons and other exhaust components on silicalite," Ind. Eng. Chem. Res., 30, 2333.
14. van de Graaf, J. M., Kapteijn, F. and Moulijn, J.A., (1998). Zeolitic Membranes in A. Cybulski and J. A. Moulijn (eds): Structured Catalysts and Reactors, Marcel Dekker, Inc., New York 543.
15. Wirawan, S.K., Creaser, D. (2006). "CO2 adsorption on silicalite-1 and cation exchanged ZSM-5 zeolites using a step change response method," Micropor. Mesopor. Mater., 91 196. Yamazaki, T., Katoh, M., Ozawa, S., Ogino, Y. (1993). "Adsorption of CO2 over univalent
16. cation-exchanged ZSM-5 zeolites," Mol. Phys.,80, 313.
Published
2008-12-31
How to Cite
Wirawan, S. K., Indrajati, I. N., Sediawan, W. B., & Mulyono, P. (2008). CO2 Adsorption on HZSM-5 Zeolite : Mass Transport Study in A Packed Bed Adsorber. ASEAN Journal of Chemical Engineering, 8(1), 38-50. Retrieved from https://journal.ugm.ac.id/v3/AJChE/article/view/7697
Issue
Vol 8 No 1 (2008)
Section
Articles

Copyright holder for articles is ASEAN Journal of Chemical Engineering. Articles published in ASEAN J. Chem. Eng. are distributed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. 

Authors agree to transfer all copyright rights in and to the above work to the ASEAN Journal of Chemical Engineering Editorial Board so that the Editorial Board shall have the right to publish the work for non-profit use in any media or form. In return, authors retain: (1) all proprietary rights other than copyright; (2) re-use of all or part of the above paper in their other work; (3) right to reproduce or authorize others to reproduce the above paper for authors’ personal use or for company use if the source and the journal copyright notice is indicated, and if the reproduction is not made for the purpose of sale.