Dynamic simulation of BTX adsorption in packed bed

T. Ncube, P. Kannan, A. Al Shoaibi, C. Srinivasakannan

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Rigorous design of commercial-scale packed beds accounting multicomponent adsorptions is mathematically complex, often resulting in adopting approximate simplified methods. Hence the present work attempts to simulate adsorption of BTX (benzene, toluene, m xylene) in a packed column of 10 m height and 3 m diameter for two adsorbents namely KIT-6 and mKIT-6 (surface modified) using Aspen Adsorption. The adsorption isotherm data of pure BTX components were generated for the adsorbent using a gas phase gravimetric analyzer. A comparative adsorption capacity indicates adsorption in the following order X > T > B for both the sorbents. m-xylene and toluene performed better on mKIT-6, as a result of which breakthrough and saturation time were higher. An increase in adsorbate feed concentration reduced the breakthrough and saturation time, proportional to the magnitude of increase. A significant reduction in the breakthrough time for benzene and toluene was observed due to competitive adsorption in the case of multicomponent adsorption as compared to pure component adsorption.

Original languageBritish English
Pages (from-to)17-28
Number of pages12
JournalInternational Journal of Modelling and Simulation
Issue number1
StatePublished - 2 Jan 2020


  • adsorption isotherm
  • aspen adsorption
  • benzene
  • breakthrough time
  • m-xylene
  • Silica
  • toluene


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