On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet

Autores
Gottifredi, Juan Carlos Agustin; Gonzo, Elio Emilio
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This contribution deals with effectiveness factor (η) and concentration profile of key component estimations when a single independent reaction takes place in a porous catalyst structure where enzymes are immobilized. The procedure is quite general since any kinetic expression can be handled and the case of catalytic activity distribution can also be taken into account. With the knowledge of kinetic parameters and effective diffusivity η and concentration profiles can be estimated through very simple algebraic equations. Thus, the numerical solution of a non linear second order boundary value differential equation, which usually needs some spline scheme, is avoided. The obtained approximate results are compared with numerical findings for the case of slab geometry where a very simple numerical procedure can be used to solve the resulting differential non linear equation. Approximate results are shown very accurate in the whole range of kinetic parameters, even in those cases where the reaction kinetics shows an apparent negative order of reaction and η values can be above unity. Tables are used to better compare approximate and numerical values. Concentration profile predictions are also very accurate in the region nearby the external surface of the catalyst particle. These approximate results are used to establish criteria to analyze experimental kinetic data in those cases where diffusional phenomena, that could affect chemical parameter estimations, must be avoided. © 2005 Elsevier B.V. All rights reserved.
Fil: Gottifredi, Juan Carlos Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Materia
Concentration Profiles
Effectiveness Factor Prediction
Enzyme Immobilization
Kinetic Data Analysis
Michaelis-Menten Kinetic
Thiele Modulus
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/66894
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/66894
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pelletGottifredi, Juan Carlos AgustinGonzo, Elio EmilioConcentration ProfilesEffectiveness Factor PredictionEnzyme ImmobilizationKinetic Data AnalysisMichaelis-Menten KineticThiele Modulushttps://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2This contribution deals with effectiveness factor (η) and concentration profile of key component estimations when a single independent reaction takes place in a porous catalyst structure where enzymes are immobilized. The procedure is quite general since any kinetic expression can be handled and the case of catalytic activity distribution can also be taken into account. With the knowledge of kinetic parameters and effective diffusivity η and concentration profiles can be estimated through very simple algebraic equations. Thus, the numerical solution of a non linear second order boundary value differential equation, which usually needs some spline scheme, is avoided. The obtained approximate results are compared with numerical findings for the case of slab geometry where a very simple numerical procedure can be used to solve the resulting differential non linear equation. Approximate results are shown very accurate in the whole range of kinetic parameters, even in those cases where the reaction kinetics shows an apparent negative order of reaction and η values can be above unity. Tables are used to better compare approximate and numerical values. Concentration profile predictions are also very accurate in the region nearby the external surface of the catalyst particle. These approximate results are used to establish criteria to analyze experimental kinetic data in those cases where diffusional phenomena, that could affect chemical parameter estimations, must be avoided. © 2005 Elsevier B.V. All rights reserved.Fil: Gottifredi, Juan Carlos Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaFil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; ArgentinaElsevier Science Sa2005-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/66894Gottifredi, Juan Carlos Agustin; Gonzo, Elio Emilio; On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet; Elsevier Science Sa; Biochemical Engineering Journal; 24; 3; 7-2005; 235-2421369-703XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.bej.2005.03.003info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1369703X05000719info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:55:35Zoai:ri.conicet.gov.ar:11336/66894instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:55:35.605CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
title On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
spellingShingle On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
Gottifredi, Juan Carlos Agustin
Concentration Profiles
Effectiveness Factor Prediction
Enzyme Immobilization
Kinetic Data Analysis
Michaelis-Menten Kinetic
Thiele Modulus
title_short On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
title_full On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
title_fullStr On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
title_full_unstemmed On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
title_sort On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet
dc.creator.none.fl_str_mv Gottifredi, Juan Carlos Agustin
Gonzo, Elio Emilio
author Gottifredi, Juan Carlos Agustin
author_facet Gottifredi, Juan Carlos Agustin
Gonzo, Elio Emilio
author_role author
author2 Gonzo, Elio Emilio
author2_role author
dc.subject.none.fl_str_mv Concentration Profiles
Effectiveness Factor Prediction
Enzyme Immobilization
Kinetic Data Analysis
Michaelis-Menten Kinetic
Thiele Modulus
topic Concentration Profiles
Effectiveness Factor Prediction
Enzyme Immobilization
Kinetic Data Analysis
Michaelis-Menten Kinetic
Thiele Modulus
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv This contribution deals with effectiveness factor (η) and concentration profile of key component estimations when a single independent reaction takes place in a porous catalyst structure where enzymes are immobilized. The procedure is quite general since any kinetic expression can be handled and the case of catalytic activity distribution can also be taken into account. With the knowledge of kinetic parameters and effective diffusivity η and concentration profiles can be estimated through very simple algebraic equations. Thus, the numerical solution of a non linear second order boundary value differential equation, which usually needs some spline scheme, is avoided. The obtained approximate results are compared with numerical findings for the case of slab geometry where a very simple numerical procedure can be used to solve the resulting differential non linear equation. Approximate results are shown very accurate in the whole range of kinetic parameters, even in those cases where the reaction kinetics shows an apparent negative order of reaction and η values can be above unity. Tables are used to better compare approximate and numerical values. Concentration profile predictions are also very accurate in the region nearby the external surface of the catalyst particle. These approximate results are used to establish criteria to analyze experimental kinetic data in those cases where diffusional phenomena, that could affect chemical parameter estimations, must be avoided. © 2005 Elsevier B.V. All rights reserved.
Fil: Gottifredi, Juan Carlos Agustin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
Fil: Gonzo, Elio Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Investigaciones para la Industria Química. Universidad Nacional de Salta. Facultad de Ingeniería. Instituto de Investigaciones para la Industria Química; Argentina
description This contribution deals with effectiveness factor (η) and concentration profile of key component estimations when a single independent reaction takes place in a porous catalyst structure where enzymes are immobilized. The procedure is quite general since any kinetic expression can be handled and the case of catalytic activity distribution can also be taken into account. With the knowledge of kinetic parameters and effective diffusivity η and concentration profiles can be estimated through very simple algebraic equations. Thus, the numerical solution of a non linear second order boundary value differential equation, which usually needs some spline scheme, is avoided. The obtained approximate results are compared with numerical findings for the case of slab geometry where a very simple numerical procedure can be used to solve the resulting differential non linear equation. Approximate results are shown very accurate in the whole range of kinetic parameters, even in those cases where the reaction kinetics shows an apparent negative order of reaction and η values can be above unity. Tables are used to better compare approximate and numerical values. Concentration profile predictions are also very accurate in the region nearby the external surface of the catalyst particle. These approximate results are used to establish criteria to analyze experimental kinetic data in those cases where diffusional phenomena, that could affect chemical parameter estimations, must be avoided. © 2005 Elsevier B.V. All rights reserved.
publishDate 2005
dc.date.none.fl_str_mv 2005-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/66894
Gottifredi, Juan Carlos Agustin; Gonzo, Elio Emilio; On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet; Elsevier Science Sa; Biochemical Engineering Journal; 24; 3; 7-2005; 235-242
1369-703X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/66894
identifier_str_mv Gottifredi, Juan Carlos Agustin; Gonzo, Elio Emilio; On the effectiveness factor calculation for a reaction - Diffusion process in an immobilized biocatalyst pellet; Elsevier Science Sa; Biochemical Engineering Journal; 24; 3; 7-2005; 235-242
1369-703X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.bej.2005.03.003
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1369703X05000719
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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