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Solution of equations describing fluid–soil reactions in packed columns

Fernandes, Neil and Gavalas, George R. (1995) Solution of equations describing fluid–soil reactions in packed columns. AIChE Journal, 41 (12). pp. 2549-2555. ISSN 0001-1541. doi:10.1002/aic.690411205.

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A semianalytical technique is presented frr solving the equations describing an isothermal, irreversible reaction of a trace component in a packed bed of a solid reactant or adsorbent The reaction-rate expression is assumed to have an arbitrary dependence on the solid reactant concentration, but a first-order dependence on the trace gas component. The technique relies on an integral transformation that reduces the set of partial differential equations to a set of two coupled ordinary differential equations in the spatial variables. Solving these two equations is simpler than solving the original equations by finite differences or finite elements, especially in the presence of steep concentration gradients. Two examples presented illustrate the technique: a progressive conversion model with reaction occurring at dispersed sites within the adsorbent pellet and a reaction proceeding in the shrinking core mode.

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Gavalas, George R.0000-0003-1468-6835
Additional Information:© 1995 American Institute of Chemical Engineers (AIChE). Manuscript received Aug. 22, 1994, and revision received Dec. 22, 1994. Funding for this project was provided by the Advanced Development Activity for Microgravity Containerless Technology of the Jet Propulsion Laboratory.
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Issue or Number:12
Record Number:CaltechAUTHORS:20151007-090425847
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Official Citation:Fernandes, N. and Gavalas, G. R. (1995), Solution of equations describing fluid–soil reactions in packed columns. AIChE J., 41: 2549–2555. doi:10.1002/aic.690411205
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:60845
Deposited By: George Porter
Deposited On:13 Oct 2015 17:21
Last Modified:10 Nov 2021 22:40

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