Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/18358
Título: | What's wrong with Lagergreen pseudo first order model for adsorption kinetics? |
Autor: | Rodrigues, Alírio E. Silva, Carlos Manuel |
Palavras-chave: | Adsorption Glueckauf model Kinetics Lagergreen model Linear system Mass transfer |
Data: | 2016 |
Editora: | Elsevier |
Resumo: | Adsorption processes can be modeled on the basis of phenomenological principles using conservation, equilibrium and transport kinetics equations. However many times an empirical approach is followed using pseudo first order and pseudo second order models to describe adsorption kinetics. In this short communication we discuss the use of Lagergreen model (pseudo first order kinetic model) and compare it with the linear driving force model of Glueckauf for a linear adsorption equilibrium isotherm. A relation between the kinetic constants of both models is derived, being possible to disclose they exhibit very dis tinct dependency with temperature whatever the porous structure of the adsorbent particle. In conclu sion, care must be taken when using the short cut approach of pseudo first order expressions, taking into account their theoretically inconsistent trends. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/18337 |
DOI: | 10.1016/j.cej.2016.08.055 |
ISSN: | 1385-8947 |
Aparece nas coleções: | UA - Dissertações de mestrado |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
What's wrong with Lagergreen pseudo first order model for adsorption kinetics_10.1016j.cej.2016.08.055.pdf | 450.44 kB | Adobe PDF |
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.