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

• Tipo: Artigo em Revista Científica Internacional
• Data: 1995

Autores

Leitao, A (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: Chemical Engineering Journal and the Biochemical Engineering Journal

Vol. 60

Páginas: 81-87

ISSN: 0923-0467

Editora: Elsevier B.V.

Indexação

ISI Web of Knowledge - 8 Citações

ISI Web of Science

Scopus - 8 Citações

COMPENDEX

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7