Solution of adsorption problems with steep concentration gradients and nonlinear isotherms

S. Gomez-Salazar, J. C. Heydweiller, L. L. Tavlarides

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

This work was motivated by the need to describe the adsorption of cadmium ions from aqueous solutions. The model for the adsorption process includes differential balances for both the fixed bed and the organo-ceramic pellets in the bed. For the highly nonlinear isotherm and the physical parameters of this system, there are steep concentration profiles within the pellets. Accurate solutions were obtained using the method of lines (MOL). There is good agreement between the numerical results and the experimental breakthrough curve when the adsorption is assumed to be controlled by a film/pore diffusion mechanism.

Original languageEnglish (US)
Pages (from-to)1913-1917
Number of pages5
JournalComputers and Chemical Engineering
Volume28
Issue number9
DOIs
StatePublished - Aug 15 2004

Keywords

  • Adsorption
  • Fixed-bed
  • Method of lines

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Computer Science Applications

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