Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/7395 |
Resumo: | Three-layer systems (membrane – composite layer (cells + polymer) – membrane) are important in different biochemical applications. Models of latex layered-membranes were evaluated and compared with experimental data in order to predict the diffusivity of substrates in the composite layer containing living E.coli microbial cells. Diffusivity predictions are dependent on the presence or the absence of a ‘skin’ layer, on the degree of polymer particle coalescence and on the thickness of each layer. Simulations with layered models were made to identify the dominant mechanisms in the three-layer system. It was found that the layered system is sensitive to the latex coatings porosity when the composite layer occupies less than 50% of the total membrane system thickness. Whenever the control of polymer particle coalescence and of the layers (coating/composite layer) thickness may be achieved, multi-layer systems presenting a wide range of relative diffusion conductivities may be built for different types of living cells and for a wide variety of practical applications. The diffusivity of the latex layer is proportional to the square of latex porosity. |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cellsDiffusionMicroporous membraneImmobilised cellsModellingPackingMass transferScience & TechnologyThree-layer systems (membrane – composite layer (cells + polymer) – membrane) are important in different biochemical applications. Models of latex layered-membranes were evaluated and compared with experimental data in order to predict the diffusivity of substrates in the composite layer containing living E.coli microbial cells. Diffusivity predictions are dependent on the presence or the absence of a ‘skin’ layer, on the degree of polymer particle coalescence and on the thickness of each layer. Simulations with layered models were made to identify the dominant mechanisms in the three-layer system. It was found that the layered system is sensitive to the latex coatings porosity when the composite layer occupies less than 50% of the total membrane system thickness. Whenever the control of polymer particle coalescence and of the layers (coating/composite layer) thickness may be achieved, multi-layer systems presenting a wide range of relative diffusion conductivities may be built for different types of living cells and for a wide variety of practical applications. The diffusivity of the latex layer is proportional to the square of latex porosity.Fundação para a Ciência e a Tecnologia (FCT); FEDER.Elsevier B.V.Universidade do MinhoMota, M.Yelshin, AlexanderFidaleo, MarcelloFlickinger, Michael C.20072007-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/7395eng"Biochemical Engineering Journal". ISSN 1369-703X. 37:3 (2007) 285-293.1369-703X10.1016/j.bej.2007.05.008info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T11:56:13Zoai:repositorium.sdum.uminho.pt:1822/7395Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:45:50.483531Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells |
title |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells |
spellingShingle |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells Mota, M. Diffusion Microporous membrane Immobilised cells Modelling Packing Mass transfer Science & Technology |
title_short |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells |
title_full |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells |
title_fullStr |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells |
title_full_unstemmed |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells |
title_sort |
Modelling diffusivity in porous polymeric membranes with an intermediate layer containing microbial cells |
author |
Mota, M. |
author_facet |
Mota, M. Yelshin, Alexander Fidaleo, Marcello Flickinger, Michael C. |
author_role |
author |
author2 |
Yelshin, Alexander Fidaleo, Marcello Flickinger, Michael C. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Mota, M. Yelshin, Alexander Fidaleo, Marcello Flickinger, Michael C. |
dc.subject.por.fl_str_mv |
Diffusion Microporous membrane Immobilised cells Modelling Packing Mass transfer Science & Technology |
topic |
Diffusion Microporous membrane Immobilised cells Modelling Packing Mass transfer Science & Technology |
description |
Three-layer systems (membrane – composite layer (cells + polymer) – membrane) are important in different biochemical applications. Models of latex layered-membranes were evaluated and compared with experimental data in order to predict the diffusivity of substrates in the composite layer containing living E.coli microbial cells. Diffusivity predictions are dependent on the presence or the absence of a ‘skin’ layer, on the degree of polymer particle coalescence and on the thickness of each layer. Simulations with layered models were made to identify the dominant mechanisms in the three-layer system. It was found that the layered system is sensitive to the latex coatings porosity when the composite layer occupies less than 50% of the total membrane system thickness. Whenever the control of polymer particle coalescence and of the layers (coating/composite layer) thickness may be achieved, multi-layer systems presenting a wide range of relative diffusion conductivities may be built for different types of living cells and for a wide variety of practical applications. The diffusivity of the latex layer is proportional to the square of latex porosity. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007 2007-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/1822/7395 |
url |
http://hdl.handle.net/1822/7395 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
"Biochemical Engineering Journal". ISSN 1369-703X. 37:3 (2007) 285-293. 1369-703X 10.1016/j.bej.2007.05.008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799132211879870464 |