Abstract
Breakthrough curves for the adsorption of propane, n-butane, and iso-butane mixture on 5A molecular sieve zeolite were obtained experimentally and theoretically at a constant temperature of 301 K. The equilibrium model and linear driving force model were used to predict the experimental breakthrough curves for this multicomponent mixture. The equilibrium model gave a satisfactory fit for experimental data. The model equations were solved by a numerical method based on backward finite difference with a fixed griding technique. The effects of feed flow rate (0.552–3.496 l/min), feed concentration (60.72–141.68 mmol/l), and adsorbates composition (58.75–75.32%) on these breakthrough curves were examined.
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Abbreviations
- C I :
-
Feed or influent gas phase concentration (mmol/l)
- C E :
-
Product or effluent gas phase concentration (mmol/l)
- K i , K ij :
-
Extended Freundlich equation coefficients
- K G :
-
Mass transfer parameter in linear driving force model (1/min)
- n i , n ii , n ij :
-
Extended Freundlich equation parameters
- q :
-
Adsorbed phase concentration (mmol/g)
- u s :
-
Superficial gas velocity (cm/min)
- t :
-
Time (min)
- z :
-
Axial coordinate (distance from the bed inlet) (cm)
- ε o :
-
Over all bed void fraction
- ρ b :
-
Bed density (g/l)
- Δq :
-
Increment of adsorbed phase concentration (mmol/g)
- Δt :
-
Increment of time
- Δz :
-
Increment of distance
- i :
-
Component i
- j :
-
Component j
- n :
-
Component n
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Ahmed, M.J., Mohammed, A.H.A.K. & Kadhum, A.A.H. Modeling of Breakthrough Curves for Adsorption of Propane, n-Butane, and Iso-Butane Mixture on 5A Molecular Sieve Zeolite. Transp Porous Med 86, 215–228 (2011). https://doi.org/10.1007/s11242-010-9617-5
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DOI: https://doi.org/10.1007/s11242-010-9617-5