Adsorptive processes using ''large-pore'' materials: Analysis of a criterion for equivalence of diffusion-convection ''apparent'' diffusion and ''extended'' linear driving force models

• Type: Article in International Scientific Journal
• Date: 1995

Authors

Leitao, A (Author) Other; Alírio Rodrigues (Author) FEUP

Journal

Title: Chemical Engineering Journal and the Biochemical Engineering Journal

Vol. 60

Pages: 81-87

ISSN: 0923-0467

Publisher: Elsevier B.V.

Indexing

ISI Web of Knowledge - 8 Citations

ISI Web of Science

Scopus - 8 Citations

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Other information

Authenticus ID: P-001-FWH

DOI: 10.1016/0923-0467(95)02990-7

Abstract (EN): The intraparticle diffusion-convection model is applied to simulate adsorptive processes using ''large-pore'' adsorbent particles. In this work, we analyse the feasibility of a criterion for the equivalence of this difficult and computation time consuming model to simpler models: the ''apparent'' diffusion model and an ''extended'' linear driving force (LDF) model. It is shown that the ''extended'' LDF model predicts reasonably well adsorption breakthrough curves in fixed beds, for different equilibrium isotherms, using a lambda (intraparticle Peclet number) dependent ''augmented'' overall mass transfer coefficient between bulk fluid and particles.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7