One-sided single-pellet technique for adsorption and intraparticle diffusion

Date

1996-02-01

Author

Doğu, Timur
Dogu, G
McCoy, BJ
Smith, JM

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The one-sided single-pellet dynamic technique introduced in this article is shown to be a very effective and simple method for the analysis of adsorption and diffusion in porous solids. Moment expressions are presented for reversible and irreversible adsorption processes. Since the adsorption equilibrium constant is the only unknown parameter in the first moment expression, this parameter can be evaluated from a single set of pulse-response experiments. This technique to evaluate the adsorption equilibrium constant is illustrated using ethylbromide as tracer. It is also shown that for a very strongly adsorbing tracer, such as 1,2-dichloroethane in soil, modified moment expressions derived with a semiinfinite boundary condition are necessary unless a criterion developed in this work is satisfied.

Subject Keywords

Catalyst diffusivities, Dynamic analysis, Sorption

URI

https://hdl.handle.net/11511/62989

Journal

AICHE JOURNAL

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

T. Doğu, G. Dogu, B. McCoy, and J. Smith, “One-sided single-pellet technique for adsorption and intraparticle diffusion,” AICHE JOURNAL, pp. 516–523, 1996, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62989.